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Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T20:43:04Z

HiuFungWong: /* Calibration wheel */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

Note: Construction going on in room next to control room.

=== Calibration wheel ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| Collimator: 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA
| ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6200 || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, bottom of centre). Foil current: ~1.3 nA || ADC || 72 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.7 GB) || 73 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || Rate: 110 kHz I: 150 μA ADC μ:~2450 || Collimator: 0.5 mm (16 mm off-axis, bottom of centre). Foil current: ~1.1-1.2 nA || ADC || 74 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.1 GB) || 75 ||
|-
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || Collimator: 0.5 mm (16 mm off-axis, left of centre). || ADC || 76 ||
|-
| -900 || ST || Rate: 100 kHz I: 150.3 μA ADC μ:~2450 || Foil current: ~1.0-1.1 nA || ADC || 77 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.8 GB) || 78 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 411.1 MU. Dose B: 408.5 MU. Total beam time run: 24.04 min.
|-
|}

[LUNCH] - approx. 1 hr.

=== Calibration wheel (fine) ===

wd: ham_stdCub/1.98mm/wheel

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST
|
* Rate: 9-10 kHz
* I: 150.2 μA
|
* Collimator: 1.98 mm
* Foil current: 0.002-0.0025 nA
* Arc current: 50 μA
* Gas source: 0.6 cc/min
| ADC || 0 || 079 ||
|-
| -900 || ST || || || 167 (on the Bragg peak) || ADC || 080 || ~25 events in peak
|-
| -900 || ST || || || 169 || ADC || 081 || ~25 events in peak
|-
| -900 || ST || || || 171 || ADC || 082 || ~25 events in peak
|-
| -900 || ST || || || 173 || ADC || 083 || ~25 events in peak
|-
| -900 || ST || || || 175 || ADC || 084 || ~25 events in peak
|-
| -900 || ST || || || 176 || ADC || 082 || ~23 events in peak
|-
| -900 || ST || || || 165 || ADC || 086 || ~23 events in peak
|-
| -900 || ST || || || 162 || ADC || 087 || ~25 events in peak
|-
| -900 || ST || || || 158 || ADC || 088 || ~200 events in peak
|-
| -900 || ST || || || 160 || ADC || 089 || ~100 events in peak
|-
| -900 || ST || || || 155 || ADC || 090 || ~1,000 events in peak
|-
| -900 || ST || || || 151|| ADC || 091 || ~700 events in peak
|-
| -900 || ST || || || 145 || ADC || 092 || ~900 events in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 2.0 MU. Dose B: 2.1 MU. Total beam time run: 45.39 min.
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || || 140 || ADC || 093 || ~1,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 094 || ~1,000 events in peak
|-
| -900 || ST || || || 120 || ADC || 095 || ~1,000 events in peak
|-
| -900 || ST || || || 110 || ADC || 096 || ~1,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 097 || ~1,200 events in peak
|-
| -900 || ST || || || 80 || ADC || 098 || ~1,500 events in peak
|-
| -900 || ST || || || 60 || ADC || 099 || ~1,200 events in peak
|-
| -900 || ST || || || 40 || ADC || 100 || ~1,500 events in peak
|-
| -900 || ST || || || 20 || ADC || 101 || ~1,500 events in peak
|-
| -900 || ST || || || 0 || ADC || 102 || ~1,500 events in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 0.2 MU. Dose B: 0.2 MU. Total beam time run: 27.71 min.
|-
|}

=== Neutron measurements ===

Neutron measurements taken using the large hexagonal scintillator block with 8" PMT (Hex module).

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T15:50:33Z

HiuFungWong: /* Off-axis collimator tests */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

Note: Construction going on in room next to control room.

=== Calibration wheel ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA
| ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6200 || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, bottom of centre). Foil current: ~1.3 nA || ADC || 72 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.7 GB) || 73 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || Rate: 110 kHz I: 150 μA ADC μ:~2450 || Collimator: 0.5 mm (16 mm off-axis, bottom of centre). Foil current: ~1.1-1.2 nA || ADC || 74 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.1 GB) || 75 ||
|-
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || Collimator: 0.5 mm (16 mm off-axis, left of centre). || ADC || 76 ||
|-
| -900 || ST || Rate: 100 kHz I: 150.3 μA ADC μ:~2450 || Foil current: ~1.0-1.1 nA || ADC || 77 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.8 GB) || 78 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 411.1 MU. Dose B: 408.5 MU. Total beam time run: 24.04 min.
|-
|}

[LUNCH] - approx. 1 hr.

=== Calibration wheel (fine) ===

wd: ham_stdCub/1.98mm/wheel

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST
|
* Rate: 9-10 kHz
* I: 150.2 μA
|
* Collimator: 1.98 mm
* Foil current: 0.002-0.0025 nA
* Arc current: 50 μA
* Gas source: 0.6 cc/min
| ADC || 0 || 079 ||
|-
| -900 || ST || || || 167 (on the Bragg peak) || ADC || 080 || ~25 events in peak
|-
| -900 || ST || || || 169 || ADC || 081 || ~25 events in peak
|-
| -900 || ST || || || 171 || ADC || 082 || ~25 events in peak
|-
| -900 || ST || || || 173 || ADC || 083 || ~25 events in peak
|-
| -900 || ST || || || 175 || ADC || 084 || ~25 events in peak
|-
| -900 || ST || || || 176 || ADC || 082 || ~23 events in peak
|-
| -900 || ST || || || 165 || ADC || 086 || ~23 events in peak
|-
| -900 || ST || || || 162 || ADC || 087 || ~25 events in peak
|-
| -900 || ST || || || 158 || ADC || 088 || ~200 events in peak
|-
| -900 || ST || || || 160 || ADC || 089 || ~100 events in peak
|-
| -900 || ST || || || 155 || ADC || 090 || ~1,000 events in peak
|-
| -900 || ST || || || 151|| ADC || 091 || ~700 events in peak
|-
| -900 || ST || || || 145 || ADC || 092 || ~900 events in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 2.0 MU. Dose B: 2.1 MU. Total beam time run: 45.39 min.
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || || 140 || ADC || 093 || ~1,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 094 || ~1,000 events in peak
|-
| -900 || ST || || || 120 || ADC || 095 || ~1,000 events in peak
|-
| -900 || ST || || || 110 || ADC || 096 || ~1,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 097 || ~1,200 events in peak
|-
| -900 || ST || || || 80 || ADC || 098 || ~1,500 events in peak
|-
| -900 || ST || || || 60 || ADC || 099 || ~1,200 events in peak
|-
| -900 || ST || || || 40 || ADC || 100 || ~1,500 events in peak
|-
| -900 || ST || || || 20 || ADC || 101 || ~1,500 events in peak
|-
| -900 || ST || || || 0 || ADC || 102 || ~1,500 events in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 0.2 MU. Dose B: 0.2 MU. Total beam time run: 27.71 min.
|-
|}

=== Neutron measurements ===

Neutron measurements taken using the large hexagonal scintillator block with 8" PMT (Hex module).

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T15:50:02Z

HiuFungWong: /* Day 1 (August 2nd) */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

Note: Construction going on in room next to control room.

=== Calibration wheel ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA
| ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6200 || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, bottom of centre). Foil current: ~1.3 nA || ADC || 72 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.7 GB) || 73 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || Rate: 110 kHz I: 150 μA ADC μ:~2450 || Collimator: 0.5 mm (16 mm off-axis, bottom of centre). Foil current: ~1.1-1.2 nA || ADC || 74 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.1 GB) || 75 ||
|-
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || Collimator: 0.5 mm (16 mm off-axis, left of centre). || ADC || 76 ||
|-
| -900 || ST || Rate: 100 kHz I: 150.3 μA ADC μ:~2450 || Foil current: ~1.0-1.1 nA || ADC || 77 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.8 GB) || 78 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 411.1 MU. Dose B: 408.5 MU. Total beam time run: 24.04 min.
|-
|}

[LUNCH] - approx. 1 hr.

=== Calibration wheel (fine) ===

wd: ham_stdCub/1.98mm/wheel

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST
|
* Rate: 9-10 kHz
* I: 150.2 μA
|
* Collimator: 1.98 mm
* Foil current: 0.002-0.0025 nA
* Arc current: 50 μA
* Gas source: 0.6 cc/min
| ADC || 0 || 079 ||
|-
| -900 || ST || || || 167 (on the Bragg peak) || ADC || 080 || ~25 events in peak
|-
| -900 || ST || || || 169 || ADC || 081 || ~25 events in peak
|-
| -900 || ST || || || 171 || ADC || 082 || ~25 events in peak
|-
| -900 || ST || || || 173 || ADC || 083 || ~25 events in peak
|-
| -900 || ST || || || 175 || ADC || 084 || ~25 events in peak
|-
| -900 || ST || || || 176 || ADC || 082 || ~23 events in peak
|-
| -900 || ST || || || 165 || ADC || 086 || ~23 events in peak
|-
| -900 || ST || || || 162 || ADC || 087 || ~25 events in peak
|-
| -900 || ST || || || 158 || ADC || 088 || ~200 events in peak
|-
| -900 || ST || || || 160 || ADC || 089 || ~100 events in peak
|-
| -900 || ST || || || 155 || ADC || 090 || ~1,000 events in peak
|-
| -900 || ST || || || 151|| ADC || 091 || ~700 events in peak
|-
| -900 || ST || || || 145 || ADC || 092 || ~900 events in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 2.0 MU. Dose B: 2.1 MU. Total beam time run: 45.39 min.
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || || 140 || ADC || 093 || ~1,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 094 || ~1,000 events in peak
|-
| -900 || ST || || || 120 || ADC || 095 || ~1,000 events in peak
|-
| -900 || ST || || || 110 || ADC || 096 || ~1,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 097 || ~1,200 events in peak
|-
| -900 || ST || || || 80 || ADC || 098 || ~1,500 events in peak
|-
| -900 || ST || || || 60 || ADC || 099 || ~1,200 events in peak
|-
| -900 || ST || || || 40 || ADC || 100 || ~1,500 events in peak
|-
| -900 || ST || || || 20 || ADC || 101 || ~1,500 events in peak
|-
| -900 || ST || || || 0 || ADC || 102 || ~1,500 events in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 0.2 MU. Dose B: 0.2 MU. Total beam time run: 27.71 min.
|-
|}

=== Neutron measurements ===

Neutron measurements taken using the large hexagonal scintillator block with 8" PMT (Hex module).

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T15:49:15Z

HiuFungWong: /* Day 2 (August 3rd) */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

Note: Construction going on in room next to control room.

=== Calibration wheel ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA
| ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6200 || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, bottom of centre). Foil current: ~1.3 nA || ADC || 72 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.7 GB) || 73 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || Rate: 110 kHz I: 150 μA ADC μ:~2450 || Collimator: 0.5 mm (16 mm off-axis, bottom of centre). Foil current: ~1.1-1.2 nA || ADC || 74 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.1 GB) || 75 ||
|-
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || Collimator: 0.5 mm (16 mm off-axis, left of centre). || ADC || 76 ||
|-
| -900 || ST || Rate: 100 kHz I: 150.3 μA ADC μ:~2450 || Foil current: ~1.0-1.1 nA || ADC || 77 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.8 GB) || 78 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 411.1 MU. Dose B: 408.5 MU. Total beam time run: 24.04 min.
|-
|}

[LUNCH] - approx. 1 hr.

=== Calibration wheel (fine) ===

wd: ham_stdCub/1.98mm/wheel

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST
|
* Rate: 9-10 kHz
* I: 150.2 μA
|
* Collimator: 1.98 mm
* Foil current: 0.002-0.0025 nA
* Arc current: 50 μA
* Gas source: 0.6 cc/min
| ADC || 0 || 079 ||
|-
| -900 || ST || || || 167 (on the Bragg peak) || ADC || 080 || ~25 events in peak
|-
| -900 || ST || || || 169 || ADC || 081 || ~25 events in peak
|-
| -900 || ST || || || 171 || ADC || 082 || ~25 events in peak
|-
| -900 || ST || || || 173 || ADC || 083 || ~25 events in peak
|-
| -900 || ST || || || 175 || ADC || 084 || ~25 events in peak
|-
| -900 || ST || || || 176 || ADC || 082 || ~23 events in peak
|-
| -900 || ST || || || 165 || ADC || 086 || ~23 events in peak
|-
| -900 || ST || || || 162 || ADC || 087 || ~25 events in peak
|-
| -900 || ST || || || 158 || ADC || 088 || ~200 events in peak
|-
| -900 || ST || || || 160 || ADC || 089 || ~100 events in peak
|-
| -900 || ST || || || 155 || ADC || 090 || ~1,000 events in peak
|-
| -900 || ST || || || 151|| ADC || 091 || ~700 events in peak
|-
| -900 || ST || || || 145 || ADC || 092 || ~900 events in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 2.0 MU. Dose B: 2.1 MU. Total beam time run: 45.39 min.
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || || 140 || ADC || 093 || ~1,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 094 || ~1,000 events in peak
|-
| -900 || ST || || || 120 || ADC || 095 || ~1,000 events in peak
|-
| -900 || ST || || || 110 || ADC || 096 || ~1,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 097 || ~1,200 events in peak
|-
| -900 || ST || || || 80 || ADC || 098 || ~1,500 events in peak
|-
| -900 || ST || || || 60 || ADC || 099 || ~1,200 events in peak
|-
| -900 || ST || || || 40 || ADC || 100 || ~1,500 events in peak
|-
| -900 || ST || || || 20 || ADC || 101 || ~1,500 events in peak
|-
| -900 || ST || || || 0 || ADC || 102 || ~1,500 events in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 0.2 MU. Dose B: 0.2 MU. Total beam time run: 27.71 min.
|-
|}

=== Neutron measurements ===

Neutron measurements taken using the large hexagonal scintillator block with 8" PMT (Hex module).

Proton Calorimetry/Experimental Runs

2016-08-18T15:46:35Z

HiuFungWong: /* 2016 */

Information is available for the following experimental runs:

== [[/2016|2016]] ==

; [[/2016/Aug2-3|2nd+3rd August 2016]]
* To obtain energy-to-range calibration measurements with a calibration wheel used by physicists at Clatterbridge with detector module comprising a 2" PMT and new PS-based scintillator.
* To obtain data cross-checking measurements taken with the wheel to that taken with PMMA blocks of equivalent thickness at the same location, and further upstream at the modulator box.
* To record total dose delivered to the new PS-based scintillator for radiation damage and hardness considerations.
* To record waveform data with new LeCroy HDO6104 oscilloscope.
* To record neutron measurements with the large 8" PMT hexagonal block module.

== [[/2015|2015]] ==

; [[/2015/Dec21-22|21st-22nd December 2015]]
: Give short explanation of the purpose and results.
; [[/2015/Jul8-9|8th-9th July 2015]]
: Give short explanation of the purpose and results.

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T15:44:22Z

HiuFungWong: /* Day 2 (August 3rd) */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

Note: Construction going on in room next to control room.

=== Calibration wheel ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA
| ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6200 || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, bottom of centre). Foil current: ~1.3 nA || ADC || 72 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.7 GB) || 73 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || Rate: 110 kHz I: 150 μA ADC μ:~2450 || Collimator: 0.5 mm (16 mm off-axis, bottom of centre). Foil current: ~1.1-1.2 nA || ADC || 74 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.1 GB) || 75 ||
|-
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || Collimator: 0.5 mm (16 mm off-axis, left of centre). || ADC || 76 ||
|-
| -900 || ST || Rate: 100 kHz I: 150.3 μA ADC μ:~2450 || Foil current: ~1.0-1.1 nA || ADC || 77 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.8 GB) || 78 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 411.1 MU. Dose B: 408.5 MU. Total beam time run: 24.04 min.
|-
|}

[LUNCH] - approx. 1 hr.

=== Calibration wheel (fine) ===

wd: ham_stdCub/1.98mm/wheel

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST
|
* Rate: 9-10 kHz
* I: 150.2 μA
|
* Collimator: 1.98 mm
* Foil current: 0.002-0.0025 nA
* Arc current: 50 μA
* Gas source: 0.6 cc/min
| ADC || 0 || 079 ||
|-
| -900 || ST || || || 167 (on the Bragg peak) || ADC || 080 || ~25 events in peak
|-
| -900 || ST || || || 169 || ADC || 081 || ~25 events in peak
|-
| -900 || ST || || || 171 || ADC || 082 || ~25 events in peak
|-
| -900 || ST || || || 173 || ADC || 083 || ~25 events in peak
|-
| -900 || ST || || || 175 || ADC || 084 || ~25 events in peak
|-
| -900 || ST || || || 176 || ADC || 082 || ~23 events in peak
|-
| -900 || ST || || || 165 || ADC || 086 || ~23 events in peak
|-
| -900 || ST || || || 162 || ADC || 087 || ~25 events in peak
|-
| -900 || ST || || || 158 || ADC || 088 || ~200 events in peak
|-
| -900 || ST || || || 160 || ADC || 089 || ~100 events in peak
|-
| -900 || ST || || || 155 || ADC || 090 || ~1,000 events in peak
|-
| -900 || ST || || || 151|| ADC || 091 || ~700 events in peak
|-
| -900 || ST || || || 145 || ADC || 092 || ~900 events in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 2.0 MU. Dose B: 2.1 MU. Total beam time run: 45.39 min.
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || || 140 || ADC || 093 || ~1,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 094 || ~1,000 events in peak
|-
| -900 || ST || || || 120 || ADC || 095 || ~1,000 events in peak
|-
| -900 || ST || || || 110 || ADC || 096 || ~1,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 097 || ~1,200 events in peak
|-
| -900 || ST || || || 80 || ADC || 098 || ~1,500 events in peak
|-
| -900 || ST || || || 60 || ADC || 099 || ~1,200 events in peak
|-
| -900 || ST || || || 40 || ADC || 100 || ~1,500 events in peak
|-
| -900 || ST || || || 20 || ADC || 101 || ~1,500 events in peak
|-
| -900 || ST || || || 0 || ADC || 102 || ~1,500 events in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 0.2 MU. Dose B: 0.2 MU. Total beam time run: 27.71 min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T15:43:43Z

HiuFungWong: /* Calibration wheel (fine) */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

Note: Construction going on in room next to control room.

=== Calibration wheel ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA
| ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6200 || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, bottom of centre). Foil current: ~1.3 nA || ADC || 72 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.7 GB) || 73 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || Rate: 110 kHz I: 150 μA ADC μ:~2450 || Collimator: 0.5 mm (16 mm off-axis, bottom of centre). Foil current: ~1.1-1.2 nA || ADC || 74 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.1 GB) || 75 ||
|-
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || Collimator: 0.5 mm (16 mm off-axis, left of centre). || ADC || 76 ||
|-
| -900 || ST || Rate: 100 kHz I: 150.3 μA ADC μ:~2450 || Foil current: ~1.0-1.1 nA || ADC || 77 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.8 GB) || 78 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 411.1 MU. Dose B: 408.5 MU. Total beam time run: 24.04 min.
|-
|}

=== Calibration wheel (fine) ===

wd: ham_stdCub/1.98mm/wheel

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST
|
* Rate: 9-10 kHz
* I: 150.2 μA
|
* Collimator: 1.98 mm
* Foil current: 0.002-0.0025 nA
* Arc current: 50 μA
* Gas source: 0.6 cc/min
| ADC || 0 || 079 ||
|-
| -900 || ST || || || 167 (on the Bragg peak) || ADC || 080 || ~25 events in peak
|-
| -900 || ST || || || 169 || ADC || 081 || ~25 events in peak
|-
| -900 || ST || || || 171 || ADC || 082 || ~25 events in peak
|-
| -900 || ST || || || 173 || ADC || 083 || ~25 events in peak
|-
| -900 || ST || || || 175 || ADC || 084 || ~25 events in peak
|-
| -900 || ST || || || 176 || ADC || 082 || ~23 events in peak
|-
| -900 || ST || || || 165 || ADC || 086 || ~23 events in peak
|-
| -900 || ST || || || 162 || ADC || 087 || ~25 events in peak
|-
| -900 || ST || || || 158 || ADC || 088 || ~200 events in peak
|-
| -900 || ST || || || 160 || ADC || 089 || ~100 events in peak
|-
| -900 || ST || || || 155 || ADC || 090 || ~1,000 events in peak
|-
| -900 || ST || || || 151|| ADC || 091 || ~700 events in peak
|-
| -900 || ST || || || 145 || ADC || 092 || ~900 events in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 2.0 MU. Dose B: 2.1 MU. Total beam time run: 45.39 min.
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || || 140 || ADC || 093 || ~1,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 094 || ~1,000 events in peak
|-
| -900 || ST || || || 120 || ADC || 095 || ~1,000 events in peak
|-
| -900 || ST || || || 110 || ADC || 096 || ~1,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 097 || ~1,200 events in peak
|-
| -900 || ST || || || 80 || ADC || 098 || ~1,500 events in peak
|-
| -900 || ST || || || 60 || ADC || 099 || ~1,200 events in peak
|-
| -900 || ST || || || 40 || ADC || 100 || ~1,500 events in peak
|-
| -900 || ST || || || 20 || ADC || 101 || ~1,500 events in peak
|-
| -900 || ST || || || 0 || ADC || 102 || ~1,500 events in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 0.2 MU. Dose B: 0.2 MU. Total beam time run: 27.71 min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T15:20:07Z

HiuFungWong: /* Day 1 (August 2nd) */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

Note: Construction going on in room next to control room.

=== Calibration wheel ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA
| ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6200 || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, bottom of centre). Foil current: ~1.3 nA || ADC || 72 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.7 GB) || 73 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || Rate: 110 kHz I: 150 μA ADC μ:~2450 || Collimator: 0.5 mm (16 mm off-axis, bottom of centre). Foil current: ~1.1-1.2 nA || ADC || 74 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.1 GB) || 75 ||
|-
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || Collimator: 0.5 mm (16 mm off-axis, left of centre). || ADC || 76 ||
|-
| -900 || ST || Rate: 100 kHz I: 150.3 μA ADC μ:~2450 || Foil current: ~1.0-1.1 nA || ADC || 77 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.8 GB) || 78 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 411.1 MU. Dose B: 408.5 MU. Total beam time run: 24.04 min.
|-
|}

=== Calibration wheel (fine) ===

wd: ham_stdCub/1.98mm/wheel

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST
|
* Rate: 9-10 kHz
* I: 150.2 μA
|
* Collimator: 1.98 mm
* Foil current: 0.002-0.0025 nA
* Arc current: 50 μA
* Gas source: 0.6 cc/min
| ADC || 0 || 079 ||
|-
| -900 || ST || || || 167 (on the Bragg peak) || ADC || 080 || ~25 events in peak
|-
| -900 || ST || || || 169 || ADC || 081 || ~25 in peak
|-
| -900 || ST || || || 171 || ADC || 082 || ~25 in peak
|-
| -900 || ST || || || 173 || ADC || 083 || ~25 in peak
|-
| -900 || ST || || || 175 || ADC || 084 || ~25 in peak
|-
| -900 || ST || || || 176 || ADC || 082 || ~23 in peak
|-
| -900 || ST || || || 165 || ADC || 086 || ~23 in peak
|-
| -900 || ST || || || 162 || ADC || 087 || ~25 in peak
|-
| -900 || ST || || || 158 || ADC || 088 || ~200 in peak
|-
| -900 || ST || || || 160 || ADC || 089 || ~100 in peak
|-
| -900 || ST || || || 155 || ADC || 090 || ~1,000 in peak
|-
| -900 || ST || || || 151|| ADC || 091 || ~700 in peak
|-
| -900 || ST || || || 145 || ADC || 092 || ~900 in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 2.0 MU. Dose B: 2.1 MU. Total beam time run: 45.39 min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T15:17:32Z

HiuFungWong: /* Calibration wheel (fine) */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

=== Calibration wheel ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA
| ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6200 || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, bottom of centre). Foil current: ~1.3 nA || ADC || 72 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.7 GB) || 73 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || Rate: 110 kHz I: 150 μA ADC μ:~2450 || Collimator: 0.5 mm (16 mm off-axis, bottom of centre). Foil current: ~1.1-1.2 nA || ADC || 74 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.1 GB) || 75 ||
|-
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || Collimator: 0.5 mm (16 mm off-axis, left of centre). || ADC || 76 ||
|-
| -900 || ST || Rate: 100 kHz I: 150.3 μA ADC μ:~2450 || Foil current: ~1.0-1.1 nA || ADC || 77 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.8 GB) || 78 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 411.1 MU. Dose B: 408.5 MU. Total beam time run: 24.04 min.
|-
|}

=== Calibration wheel (fine) ===

wd: ham_stdCub/1.98mm/wheel

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST
|
* Rate: 9-10 kHz
* I: 150.2 μA
|
* Collimator: 1.98 mm
* Foil current: 0.002-0.0025 nA
* Arc current: 50 μA
* Gas source: 0.6 cc/min
| ADC || 0 || 079 ||
|-
| -900 || ST || || || 167 (on the Bragg peak) || ADC || 080 || ~25 events in peak
|-
| -900 || ST || || || 169 || ADC || 081 || ~25 in peak
|-
| -900 || ST || || || 171 || ADC || 082 || ~25 in peak
|-
| -900 || ST || || || 173 || ADC || 083 || ~25 in peak
|-
| -900 || ST || || || 175 || ADC || 084 || ~25 in peak
|-
| -900 || ST || || || 176 || ADC || 082 || ~23 in peak
|-
| -900 || ST || || || 165 || ADC || 086 || ~23 in peak
|-
| -900 || ST || || || 162 || ADC || 087 || ~25 in peak
|-
| -900 || ST || || || 158 || ADC || 088 || ~200 in peak
|-
| -900 || ST || || || 160 || ADC || 089 || ~100 in peak
|-
| -900 || ST || || || 155 || ADC || 090 || ~1,000 in peak
|-
| -900 || ST || || || 151|| ADC || 091 || ~700 in peak
|-
| -900 || ST || || || 145 || ADC || 092 || ~900 in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 2.0 MU. Dose B: 2.1 MU. Total beam time run: 45.39 min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T15:12:08Z

HiuFungWong:

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

=== Calibration wheel ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA
| ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6200 || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, bottom of centre). Foil current: ~1.3 nA || ADC || 72 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.7 GB) || 73 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || Rate: 110 kHz I: 150 μA ADC μ:~2450 || Collimator: 0.5 mm (16 mm off-axis, bottom of centre). Foil current: ~1.1-1.2 nA || ADC || 74 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.1 GB) || 75 ||
|-
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || Collimator: 0.5 mm (16 mm off-axis, left of centre). || ADC || 76 ||
|-
| -900 || ST || Rate: 100 kHz I: 150.3 μA ADC μ:~2450 || Foil current: ~1.0-1.1 nA || ADC || 77 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.8 GB) || 78 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 411.1 MU. Dose B: 408.5 MU. Total beam time run: 24.04 min.
|-
|}

=== Calibration wheel (fine) ===

wd: ham_stdCub/1.98mm/wheel

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST
|
* Rate: 9-10 kHz
* I: 150.2 μA
|
* Collimator: 1.98 mm
* Foil current: 0.002-0.0025 nA
* Arc current: 50 μA
* Gas source: 0.6 cc/min
| ADC || 0 || 079 ||
|-
| -900 || ST || || || 167 (on the Bragg peak) || ADC || 080 || ~25 in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A:  MU. Dose B:  MU. Total beam time run:  min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T15:11:42Z

HiuFungWong: /* Day 1 (August 2nd) */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

=== Calibration wheel ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA
| ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6200 || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, bottom of centre). Foil current: ~1.3 nA || ADC || 72 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.7 GB) || 73 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || Rate: 110 kHz I: 150 μA ADC μ:~2450 || Collimator: 0.5 mm (16 mm off-axis, bottom of centre). Foil current: ~1.1-1.2 nA || ADC || 74 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.1 GB) || 75 ||
|-
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || Collimator: 0.5 mm (16 mm off-axis, left of centre). || ADC || 76 ||
|-
| -900 || ST || Rate: 100 kHz I: 150.3 μA ADC μ:~2450 || Foil current: ~1.0-1.1 nA || ADC || 77 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.8 GB) || 78 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 411.1 MU. Dose B: 408.5 MU. Total beam time run: 24.04 min.
|-
|}

=== Calibration wheel (fine) ===

wd: ham_stdCub/1.98mm/wheel

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST
|
* Rate: 9-10 kHz
* I: 150.2 μA
|
* Collimator: 1.98 mm
* Foil current: 0.002-0.0025 nA
* Arc current: 50 μA
* Gas source: 0.6 cc/min
| ADC || 0 || 079 ||
|-
| -900 || ST || || || 167 (on the Bragg peak) || ADC || 080 || ~25 in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A:  MU. Dose B:  MU. Total beam time run:  min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T15:09:46Z

HiuFungWong: /* Calibration wheel (fine) */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

=== Calibration wheel ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA
| ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6200 || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, bottom of centre). Foil current: ~1.3 nA || ADC || 72 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.7 GB) || 73 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || Rate: 110 kHz I: 150 μA ADC μ:~2450 || Collimator: 0.5 mm (16 mm off-axis, bottom of centre). Foil current: ~1.1-1.2 nA || ADC || 74 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.1 GB) || 75 ||
|-
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || Collimator: 0.5 mm (16 mm off-axis, left of centre). || ADC || 76 ||
|-
| -900 || ST || Rate: 100 kHz I: 150.3 μA ADC μ:~2450 || Foil current: ~1.0-1.1 nA || ADC || 77 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.8 GB) || 78 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 411.1 MU. Dose B: 408.5 MU. Total beam time run: 24.04 min.
|-
|}

=== Calibration wheel (fine) ===

wd: ham_stdCub/1.98mm/wheel

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="8" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST
|
* Rate: 9-10 kHz
* I: 150.2 μA
|
* Collimator: 1.98 mm
* Foil current: 0.002-0.0025 nA
* Arc current: 50 μA
* Gas source: 0.6 cc/min
| ADC || 0 || 079 ||
|-
| -900 || ST || || || 167 (on the Bragg peak) || ADC || 080 || ~25 in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A:  MU. Dose B:  MU. Total beam time run:  min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T15:07:04Z

HiuFungWong: /* Day 2 (August 3rd) */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

=== Calibration wheel ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA
| ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6200 || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, bottom of centre). Foil current: ~1.3 nA || ADC || 72 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.7 GB) || 73 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || Rate: 110 kHz I: 150 μA ADC μ:~2450 || Collimator: 0.5 mm (16 mm off-axis, bottom of centre). Foil current: ~1.1-1.2 nA || ADC || 74 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.1 GB) || 75 ||
|-
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || Collimator: 0.5 mm (16 mm off-axis, left of centre). || ADC || 76 ||
|-
| -900 || ST || Rate: 100 kHz I: 150.3 μA ADC μ:~2450 || Foil current: ~1.0-1.1 nA || ADC || 77 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.8 GB) || 78 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 411.1 MU. Dose B: 408.5 MU. Total beam time run: 24.04 min.
|-
|}

=== Calibration wheel (fine) ===

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
* Rate: 9-10 kHz
* I: 150.2 μA
|
* Collimator: 1.98 mm
* Foil current: 0.002-0.0025 nA
* Arc current: 50 μA
* Gas source: 0.6 cc/min
| 0 || 079 || Beam startup and calibration
|-
| -900 || ST || || || 167 (on the Bragg peak) || ADC || 080 || ~25 in peak
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A:  MU. Dose B:  MU. Total beam time run:  min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T14:54:41Z

HiuFungWong: /* Rate tests */

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T14:53:55Z

HiuFungWong: /* Wheel calibration */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

=== Calibration wheel ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA || ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6200 || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, bottom of centre). Foil current: ~1.3 nA || ADC || 72 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.7 GB) || 73 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || Rate: 110 kHz I: 150 μA ADC μ:~2450 || Collimator: 0.5 mm (16 mm off-axis, bottom of centre). Foil current: ~1.1-1.2 nA || ADC || 74 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.1 GB) || 75 ||
|-
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || Collimator: 0.5 mm (16 mm off-axis, left of centre). || ADC || 76 ||
|-
| -900 || ST || Rate: 100 kHz I: 150.3 μA ADC μ:~2450 || Foil current: ~1.0-1.1 nA || ADC || 77 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.8 GB) || 78 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 411.1 MU. Dose B: 408.5 MU. Total beam time run: 24.04 min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T14:52:31Z

HiuFungWong: /* Off-axis collimator tests */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

=== Wheel calibration ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA || ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6200 || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, bottom of centre). Foil current: ~1.3 nA || ADC || 72 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.7 GB) || 73 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || Rate: 110 kHz I: 150 μA ADC μ:~2450 || Collimator: 0.5 mm (16 mm off-axis, bottom of centre). Foil current: ~1.1-1.2 nA || ADC || 74 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.1 GB) || 75 ||
|-
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || Collimator: 0.5 mm (16 mm off-axis, left of centre). || ADC || 76 ||
|-
| -900 || ST || Rate: 100 kHz I: 150.3 μA ADC μ:~2450 || Foil current: ~1.0-1.1 nA || ADC || 77 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.8 GB) || 78 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 411.1 MU. Dose B: 408.5 MU. Total beam time run: 24.04 min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T14:50:24Z

HiuFungWong: /* Off-axis collimator tests */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

=== Wheel calibration ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA || ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6200 || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || ADC μ:~6150 || Collimator: 0.5 mm (8 mm off-axis, bottom of centre). Foil current: ~1.3 nA || ADC || 72 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.7 GB) || 73 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || Rate: 110 kHz I: 150 μA ADC μ:~2450 || Collimator: 0.5 mm (16 mm off-axis, bottom of centre). Foil current: ~1.1-1.2 nA || ADC || 74 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.1 GB) || 75 ||
|-
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || Collimator: 0.5 mm (16 mm off-axis, left of centre). || ADC || 76 ||
|-
| -900 || ST || Rate: 100 kHz I: 150.3 μA ADC μ:~2450 || Collimator: 0.5 mm (16 mm off-axis, left of centre). Foil current: ~1.0-1.1 nA || ADC || 77 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.8 GB) || 78 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 411.1 MU. Dose B: 408.5 MU. Total beam time run: 24.04 min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T14:18:20Z

HiuFungWong: /* Off-axis collimator tests */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

=== Wheel calibration ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA || ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC (μ~6150) || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON.
|-
| -900 || ST || || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC (μ~6200) || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T14:13:50Z

HiuFungWong: /* Off-axis collimator tests */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

=== Wheel calibration ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA || ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC (μ~6150) || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| -900 || ST || || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC (μ~6200) || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T14:12:01Z

HiuFungWong: /* Day 2 (August 3rd) */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

=== Wheel calibration ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA || ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 64 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

=== Off-axis collimator tests ===

wd: /ham_stdCub/0.5mm

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor control reset.
|-
| -900 || ST || After adjustment:
*Rate: 150kHz
*I: 150.7 μA
| Collimator: 0.5 mm (centre/on axis)
Beam start:
*Foil current: 0.8 nA
*Arc current: 1.6 mA
*Gas source: 1 cc/min

After adjustment:
*Foil current: 1.6 nA (cycling from 0)
*Arc current: 2 mA
| ADC || ||
|-
| -900 || ST || Rate: 230kHz Dose rate: 23 MU/min I: 151.3 μA || Foil current: ~1.6 nA Gas source: 0.6 cc/min || ADC || 66 || ~5,000 events in peak.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 67 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 257.0 MU. Dose B: 255.3 MU. Total beam time run: 13.66 min.
|-
| -900 || ST || Rate: 250kHz I: 151.6 μA || Collimator: 0.5 mm (8 mm off-axis, left of centre (into the beam)). Note: Scintillator is centred for resulting collimator each time. Foil current: ~1.8-1.4 nA Arc current: 2 mA Gas source: 0.6 cc/min || ADC (μ~6150) || 68 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 69 ||
|-
| -900 || ST || || Collimator: 0.5 mm (8 mm off-axis, top of centre). Foil current: ~1.4 nA || ADC (μ~6200) || 70 || ~7,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.5 GB) || 71 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 349.4.0 MU. Dose B: 347.1 MU. Total beam time run: 16.36 min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T11:20:36Z

HiuFungWong: /* Rate tests (continued) */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

=== Wheel calibration ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA || ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| -900 || ST || Dose rate: 5.5 MU/min I: 173 μA || Foil current: 0.35-0.4 nA Arc current: 1.6 mA || ADC || 62 || ~2,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2.1 GB) || 65 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 126.9 MU. Dose B: 126.2 MU. Total beam time run: 69.28 min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T11:08:17Z

HiuFungWong: /* Rate tests (continued) */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

=== Wheel calibration ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA || ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Dose rate: 0.9 MU/min || Foil current: 0.066-68 nA Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Dose rate: 0.5 MU/min I: 150.55 μA || Foil current: 0.0042 nA Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak. Increased gas flow: No change when increased to 0.80 cc/min. Foil current decreased when increased to 1.0 cc/min.
|-
| -900 || ST || || || waveforms (~1 GB) || 59 ||
|-
| -900 || ST || Rate: 250 kHz (scope) Dose rate: 1.7 MU/min I: 151.4 μA || Foil current: 0.120-130 nA Arc current: 1 mA || ADC || 60 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 61 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Rate: 500 kHz (current) Dose rate: 2.8 MU/min I: 152.25 μA || Foil current: 0.2 nA Arc current: 1.3 mA || ADC || 62 || ~10,000 events in peak. Increased arc current.
|-
| -900 || ST || || || waveforms (~2 GB) || 63 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T10:51:36Z

HiuFungWong: /* Rate tests (continued) */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

=== Wheel calibration ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA || ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 6-7 kHz Dose rate: 0-0.1 MU/min || 1.98 mm collimator Foil current: 0.016 nA Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Foil current: 0.066-68 nA Dose rate: 0.9 MU/min || Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Foil current: 0.0042 nA Dose rate: 0.5 MU/min || Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T10:49:15Z

HiuFungWong: /* Rate tests (continued) */

Dose calibration at Clatterbridge: 0.9 Gy per monitor unit (MU) at 60 MeV.

__TOC__

== Day 1 (August 2nd)==

=== Wheel calibration ===

* Wheel segments are each ~4 mm.
* Distance between collimator exit (downstream face of collimator) and the start of the wheel (the upstream face) is 37.5 mm.
* Distance between the black box edge and upstream edge of the wheel is 41 mm.

Electronic equipment setup:
* DC offset: -30 mV
* Record length: 456 ns
* Threshold: 40 LSB
* Trigger: 194 mV
* Gate offset: 10 ns
* Pre-trigger: 50 ns
* Charge sensitivity: 20 fc/LSB

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Wheel step position !! Data recorded !! Run number !! Comments
|-
| -900 || ST
|
Beam off:
* I: 150.51 μ
Beam on:
* Rate: 300 kHz on startup.
* Rate: 25 kHz at -100 mV.
| 1.98 mm
Beam startup:
* Arc current: 750 mV
* Gas source: 0.67 cc/min
Beam settings change:
* Arc current: 50 μ
* Gas source: 0.39 cc/min
* Dose rate: 0.1 MU/min
| N/A || || [startup] || Beam startup and calibration
|-
| -900 || ST || || || 0 || ADC || 01 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || waveforms || 03 || ~7,000 events in peak
|-
| -900 || ST || || || 20 || ADC || 05 || ~7,000 events in peak
|-
| -900 || ST || || || 40 || ADC || 06 || ~7,000 events in peak
|-
| -900 || ST || || || 60 || ADC || 07 || ~7,000 events in peak
|-
| -900 || ST || || || 80 || ADC || 08 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || ADC || 09 || ~7,000 events in peak
|-
| -900 || ST || || || 100 || waveforms (~0.5 GB) || 11 || Beam dropped. Repeat in Run 13.
|-
| -900 || ST || || || 100 || waveforms (~1 GB) || 13 || Repeat of Run 10.
|-
| -900 || ST || || || 120 || ADC || 14 || ~7,000 events in peak
|-
| -900 || ST || || || 140 || ADC || 15 || ~7,000 events in peak
|-
| -900 || ST || || || 160 || ADC || 16 || ~6,000 events in peak
|-
| -900 || ST || || || 130 || ADC || 17 || ~7,000 events in peak
|-
| -900 || ST || || || 150 || ADC || 18 || ~6,000 events in peak
|-
| -900 || ST || || || 165 (Just before Bragg peak, which is at wheel step 166.)|| ADC || 19 || ~6,000 events in peak.
|-
| -900 || ST || || || 170 || ADC || 20 || Beam dropped. ~4,000 events in peak. Repeat in Run 21.
|-
| -900 || ST || || || 170 || ADC || 21 || Repeat of Run 20. ~4,000 events in peak.
|-
| -900 || ST || || || 173 (Bragg peak fall-off area.) || ADC || 22 || Beam dropped. Repeat in Run 23.
|-
| -900 || ST || || || 173 || ADC || 23 || Repeat of Run 22. ~1.800 events in peak
|-
| -900 || ST || || || 175 || ADC || 24 ||
|-
| -900 || ST || || || 179 || ADC || 25 || ~30 events in peak. No "peak" apparent; potentially only secondaries.
|-
| -900 || ST || || || 167 (Tip of Bragg peak.) || ADC || 26 || ~7,000 events in peak.
|-
| -900 || ST || Rate: 25 kHz (1,000 events in 45 ms) || || 0 || ADC || 27 || ~7,000 events in peak. Back to starting point on calibration wheel to compare with Run 01.
|-
| align="center" colspan="8" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 36.7 MU. Dose B: 36.6 MU. Total beam time run: 99 min.
|-
| -900 || ST || || || 0 || ADC || 28 || Background run. Acquisition left over lunch. ~140 events in peak.
|-
|}

[LUNCH] - approx. 1 hr.

=== PMMA modulator block cross-check ===

PMMA modulator blocks of thickness equivalent to particular steps of calibration wheel inserted into beamline at location of wheel (just downstream of nozzle) and upstream inside modulator box to cross-check against data obtained earlier using calibration wheel.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! PMMA thickness (mm) !! Position of PMMA block !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="9" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Threshold: 40 LSB || 0 (No PMMA. Calibration wheel removed.) || N/A || ADC || 29 || ~7,000 events in peak
|-
| -900 || ST || || || 0 || N/A || waveforms (~1.2 GB) || 31 ||
|-
| -900 || ST || Rate: ~25 kHz || || 7.24 mm (corresponding to wheel step 40; 8.3 mm water) || Same position the calibration wheel was. || ADC || 32 || ~7,000 events in peak
|-
| -900 || ST || || || 7.24 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 34 ||
|-
| -900 || ST || Rate: ~12 kHz || || 7.24 mm || Upsteam in usual position inside modulator box. || ADC || 35 || ~7,000 events in peak. Beam misbehaviour (shifting) starting with this run and onwards.
|-
| -900 || ST || || || 7.24 mm || Upsteam in usual position inside modulator box. || waveforms (~1.1 GB) || 36 ||
|-
| -900 || ST || ADC: ~4373 After beam shift Rate: ~20 kHz || || 13.4 mm (corresponding to wheel step 80; 15.6 mm water) || Same position the calibration wheel was. || ADC || 37 || ~7,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Same position the calibration wheel was. || waveforms (~1 GB) || 38 ||
|-
| -900 || ST || Rate: ~7 kHz ADC: ~4900 After beam shift || || 13.4 mm || Upsteam in usual position inside modulator box. || ADC || 39 || ~5,000 events in peak
|-
| -900 || ST || || || 13.4 mm || Upsteam in usual position inside modulator box. || waveforms (~1 GB) || 40 ||
|-
| align="center" colspan="9" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 6.7 MU. Dose B: 6.9 MU. Total beam time run: 94.19 min.
|-
|}

=== Rate tests ===

All PMMA absorbers removed from beam. 1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 20 kHz || Foil current: 0.005 nA Arc current: 50 μA || ADC || 41 || ~7,000 events in peak. No absorbers in beam.
|-
| -900 || ST || || || waveforms (~1 GB) || 42 ||
|-
| -900 || ST || Rate: 50 kHz || Foil current: 0.0125 nA Arc current: 75 μA || ADC || 43 || ~7,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || || waveforms (~1 GB) || 44 ||
|-
| -900 || ST || Dose rate: 0.4 - 0.5. Before rate drop
*Rate: 85 kHz

After rate drop
*Rate: 90 kHz
| Before rate drop
*Foil current: 0.0250 nA
*Arc current: 150;μA
*I: 150.5;μA

After rate drop
*Foil current: 0.0300 nA
*Arc current: 200;μA || ADC || 45 || ~10,000 events in peak.
|-
| -900 || ST || || || waveforms (~1.6 GB) || 46 ||
|-
| -900 || ST || Rate: 140 kHz || Foil current: 0.0500 nA Arc current: 400 μA || ADC || 47 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current: Dropped from ~0.0450 nA to 0.0370 nA || waveforms (~1.6 GB) || 48 ||
|-
| -900 || ST || Rate: 250 kHz || Foil current: Dropped from 0.1080 nA to 0.1050 nA Arc current: 800 μA I: 151.3 μA || ADC || 49 || ~15,000 events in peak. Increased arc current to up the rate.
|-
| -900 || ST || || Foil current and rate went down over time. Arc current down to 700 μA || waveforms (~2 GB) || 50 ||
|-
| -900 || ST || Rate: 300 kHz (scope) Foil current: 0.25-0.27 nA --> 500 kHz (extrapolated) || I: 170.5 μA Arc current: 1.2 mA || ADC || 51 || ~300 events in peak. Pile-up seen in ADC spectrum.
|-
| -900 || ST || || Foil current: 0.20-0.27 nA I: 171.2 μA || waveforms (~2 GB) || 53 ||
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

=== LeCroy scope data ===

Scope 2: LeCroy HDO6104 [http://teledynelecroy.com/oscilloscope/oscilloscopemodel.aspx?modelid=7170&capid=102&mid=504], [http://cdn.teledynelecroy.com/files/pdf/hdo6000_oscilloscope_datasheet.pdf datasheet] PDF | 1.4 MB

Pulse parameters:
* ~500 mV
*Threshold of ~-77 mV.
*Note: Slight reflection seen at ~350 ns after main pulse, which is equivalent to ~10 m (given that the speed of light in a cable is ~4 ns/m).

{| class="wikitable"
|-
! High voltage (V) !! Absorber!! Position !! Rate !! File directory !! File number & data recorded !! Run/digitiser file number equivalents !! Comments
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_noabs_25kHzrate || 0-1: ASCII 00-49: binary || || Trigger threshold: -75 mV
|-
| -900 || 7.24 mm PMMA || Same position modulator wheel was. || 25 kHz || 1.98mmcol_7.24mmabs_25kHzrate || 00-051: binary || 032, 034 ||
|-
| -900 || 7.24 mm PMMA || Upsteam in usual position inside modulator box. || 12 kHz || 1.98mmcol_7.24mmabs_12kHzrate || 00-50: binary || 035, 036 ||
|-
| -900 || 13.4 mm PMMA || Same position modulator wheel was. || 20 kHz || 1.98mmcol_13.4mmabs_20kHzrate || 00-50: binary || 037, 038 ||
|-
| -900 || 13.4 mm PMMA || Upsteam in usual position inside modulator box. || 7 kHz || 1.98mmcol_13.4mmabs_7kHzrate || 00-50: binary || 039, 040 ||
|-
| -900 || none || N/A || 20 kHz || 1.98mmcol_ratetest_20kHzrate || 00-050: binary || 041, 042 ||
|-
| -900 || none || N/A || 50 kHz || 1.98mmcol_ratetest_50kHzrate || 00-050: binary || 043, 044 ||
|-
| -900 || none || N/A || 85 kHz || 1.98mmcol_ratetest_85kHzrate || 00-050: binary || 045, 046 ||
|-
| -900 || none || N/A || 140 kHz || 1.98mmcol_ratetest_140kHzrate || 00-050: binary || 047, 048 ||
|-
| -900 || none || N/A || 250 kHz || 1.98mmcol_ratetest_250kHzrate || 00-050: binary || 049, 050 ||
|-
| -900 || none || N/A || 300 kHz (scope) 500 kHz (based on scattering foil current) || 1.98mmcol_ratetest_500kHzrate || 00-050: binary || 051, 053 ||
|-
|}

== Day 2 (August 3rd) ==

=== Rate tests (continued) ===

1.98 mm collimator still in place.

{| class="wikitable"
|-
! High voltage (V) !! Trigger !! Rate & additional information !! Collimator size & beam information !! Data recorded !! Run number !! Comments
|-
| align="center" colspan="7" style="background:#ccffcc" | BEAM ON. Dose monitor operation reset.
|-
| -900 || ST || Rate: 6-7 kHz Foil current: 0.016 nA Dose rate: 0-0.1 MU/min || 1.98 mm collimator Arc current: 50 μA Gas source: 0.39 cc/min || ADC || 54 || ~5,000 events in peak. No absorbers in beam.
|-
| -900 || ST || Rate: 8 kHz Threshold: -40 kHz to match digitiser) || || waveforms (~1.1 GB) || 55 ||
|-
| -900 || ST || Rate: 170 kHz Foil current: 0.066-68 nA Dose rate: 0.9 MU/min || Arc current: 500 μA || ADC || 56 || ~7,000 events in peak
|-
| -900 || ST || || || waveforms (~1.4 GB) || 57 ||
|-
| -900 || ST || Rate: 125 kHz Foil current: 0.0042 nA Dose rate: 0.5 MU/min || Arc current: 500 μA Gas source: 1.0 cc/min || ADC || 58 || ~7,000 events in peak
|-
| align="center" colspan="7" style="background:#ffcccc" | BEAM OFF. Integrated dose: Dose A: 134.7 MU. Dose B: 134.2 MU. Total beam time run: 92.22 min.
|-
|}

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T10:36:36Z

HiuFungWong: /* Rate tests (continued) */

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T10:33:38Z

HiuFungWong: /* Rate tests */

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T10:28:26Z

HiuFungWong: /* Rate tests (continued) */

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-18T01:37:05Z

HiuFungWong: /* Day 2 (August 3rd) */

Proton Calorimetry/Experimental Runs/2016/Aug2-3

2016-08-17T20:27:37Z