Proton Calorimetry/Experimental Runs/2019/Apr12-15
UPDATE THIS PAGE 2 night shifts with range calorimeter and single PMT module.
Equipment List
Item | Notes |
---|---|
Network Hub | Set in control room to take output from experimental room ethernet switcher. Control laptops connected via ethernet or 5GHz WiFi. |
Control Laptop x2 | |
DAQ desktop PC | |
Ethernet Switcher | Set in experiment room and connected DAQ desktop PC. Output sent to control room Network Hub. |
Ethernet Cable x 5 | To connect DAQ PC to switcher, switcher to Network Hub (long cable), 2 laptops to Network Hub, if scope: scope to switcher. |
Range Detector Experiment
Item | Notes |
---|---|
Portable Enclosure | Modified Big Zarges Waterproof Wheeled Equipment Case.
Features mount for scintillator and PMT, opening for beam, and ports for SHV, BNC, SMA, Camera Link cables. |
Scintillator stack | 14 x 2 mm, 15 x 2.6 mm and 20 x 3 mm sheets in ascending order from the front/beam of the end of the scintillator. Sheet 21 not used. Sheet numbers from front to end (in beam direction): 30,29,28,27,26,22,19,18,17,15,14,13,10,7,25,24,23,20,16,12,11,9,8,6,5,4,3,2,1,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50. |
ISDI CMOS sensor | sensor pixel dimension: 1030 x 1536. NO optical grease between scintillator and sensor. Connected to DAQ PC via Camera Link cable. |
DAQ desktop PC | Controls sensor aquisition. |
Gloves | For handling scintillator |
Experiment List
12–13th April
Range calorimeter measurements with ISDI sensor + scintillator stack.
- Helium:
- Background measurement.
- Intensity check with 50.57 MeV/u pristine Bragg peak.
- Shoot-through at 220.51 MeV/u for sensor intensity calibration.
- Individual range measurements from 50.57 MeV/u (2.287cm) to 110 mm (=122.3 MeV/u) range:
- 5mm steps from min to max.
- 10 x 1mm steps from 50.57MeV/u upwards. (10 lowest energy steps; 50.57MeV/u, 51.79MeV/u, 52.97,54.14,55.30, 56.44, 57.54,58.64,59.74,60.80 MeV/u = 2.287, 2.388,2.488,2.587,2.587,2.788,2.887,2.987,3.088,3.187 cm)
- 10 x 1mm steps from ~100mm downwards. (the 10 step down from 115.9 MeV: Ranges : 10.09,99.89,9.889,9.789,9.689,9.589,9.489,9.388,9.289,9.189)
- SOBP with single pixel stripe in single acquisition.
- Carbon:
- Background measurement.
- Intensity check with 88.83 MeV/u pristine Bragg peak.
- Shoot-through at 430.10 MeV/u for sensor intensity calibration.
- Individual range measurements from 88.83 MeV/u to 110 mm range:
- 5mm steps from min to max.
- 10 x 1mm steps from 88.83 MeV/u upwards.
- 10 x 1mm steps from ~100mm downwards.
- SOBP with single pixel stripe in single acquisition.
- Proton:
- Background measurement.
- Intensity check with 48.12 MeV pristine Bragg peak.
- Shoot-through at 221.06 MeV/u for sensor intensity calibration.
- Individual range measurements from 48.12 MeV/u to 110 mm range:
- 5mm steps from min to max.
- 10 x 1mm steps from 48.12 MeV/u upwards.
- 10 x 1mm steps from ~100mm downwards.
- SOBP with single pixel stripe in single acquisition.
- Position scan at 100mm with 30mm transverse offset in both positive and negative x.
Oxygen measurements planned but not requested:
- Background measurement.
- Intensity check with 103.77 MeV pristine Bragg peak.
- Shoot-through at 514.82 MeV/u for sensor intensity calibration.
- Individual range measurements from 103.77 MeV/u to 110 mm range:
- 5mm steps from min to max.
- 10 x 1mm steps from 103.77 MeV/u upwards.
- 10 x 1mm steps from ~100mm downwards.
- SOBP with single pixel stripe in single acquisition.
13–14th April
Range calorimeter measurements with ISDI sensor + scintillator stack
- Helium:
- Background measurement.
- Intensity check with 50.57 MeV/u pristine Bragg peak.
- Shoot-through at 220.51 MeV/u for sensor intensity calibration.
- SOBP measurements:
- Correct SOBP measurement with 100mm distal edge using equal particle rate but clinical weighting for each layer with 3x3 spot grid.
- Correct SOBP measurement with 100mm distal edge using clinical weighting with approx. equal time to deliver each each layer with single on-axis spot.
- Faked SOBP measurement with 100mm distal edge using equal particle rate and equal weighting for each spot with single on-axis spot.
- Both measurements SOBP with single pixel stripe in single acquisition: 6x1,536 pixel area; approx 1m50s acquisition time.
- Mixed particle tests:
- Carbon clinical SOBP with 100mm distal edge using equal particle rate but clinical weighting for 15 layers with 2mm range spacing and 3x3 spot grid.
- Carbon faked SOBP with 100mm distal edge using equal particle rate and equal weighting for each layer with single on-axis spot for 10 layers with 3mm layer spacing.
- Helium replica of 100mm Carbon clinical SOBP (260mm distal edge) with 10 layers with 8/9mm layer spacing (closest approximation of 3mm Carbon layer spacing); equal particle rate with clinical weighting and 3x3 spot grid.
- Helium replica of 100mm Carbon faked SOBP (260mm distal edge) using equal particle rate and equal weighting for each layer with single on-axis spot for 10 layers with 8/9mm layer spacing.
- Repeat measurements with 50mm PMMA sheets until Helium SOBP fully contained in detector.
- Add 30mm PMMA sheet and repeat Helium measurements in small transverse steps (tumour motion simulation).
14–15th April
Experiment Log
PMMA blocks are 50mm thick. Water Equivalent Thickness is 57.81mm.
Beam Tests
12–13th April
Beam focus ranges from step 1 (smallest) to step 4 (of 6).
Helium ion beam
full sensor area
Run number | Full Well Mode | Beam Energy (MeV/u) | Range (estimated) | N particles | Spot size (mm) | Test type | Comments | Thumbnail |
---|---|---|---|---|---|---|---|---|
N | well mode | Energy MeV/u | Range | particles | Spot FWHM | test | comments | |
00 | None | None | - | None | None | - | background | |
01 | low | 50.57 | 22.9 | 10^8 | 18.6 | He | low energy, low intensity |
Carbon ion beam
full sensor
Run number | Full Well Mode | Beam Energy (MeV/u) | Range (estimated) | N particles | Spot size (mm) | Test type | Comments | Thumbnail |
---|---|---|---|---|---|---|---|---|
N | well mode | Energy MeV/u | Range | particles | Spot FWHM | test | comments | |
44 | high | None | - | None | None | - | background |
Proton beam
full sensor
Run number | Full Well Mode | Beam Energy (MeV/u) | Range (estimated) | N particles | Spot size (mm) | Test type | Comments | Thumbnail |
---|---|---|---|---|---|---|---|---|
N | well mode | Energy MeV/u | Range | particles | Spot FWHM | test | comments | |
79 | high | None | - | None | None | - | background |
14–15th April
Beam focus ranges from step 1 (smallest) to step 4 (of 6).
Helium ion beam
full sensor area
Run number | Full Well Mode | Beam Energy (MeV/u) | Range (estimated) | N ions /s | Spot size (mm) | Test type | Comments | Thumbnail |
---|---|---|---|---|---|---|---|---|
N | well mode | Energy MeV/u | Range | ions/s | Spot FWHM | test | comments | |
00 | high | None | - | None | None | - | background | |
01 | high | 50.57 | 22.9 | 8x10^8 | 18.6 | He | low energy, max clinical intensity |
Mixed Helium and Carbon ions beam
full sensor
Run number | Full Well Mode | Beam Energy (MeV/u) | Range (estimated) | N particles | Spot size (mm) | Test type | Comments | Thumbnail |
---|---|---|---|---|---|---|---|---|
N | well mode | Energy MeV/u | Range | particles | Spot FWHM | test | comments | |
09 | high | 182.32 - 222.31 | 74.4 - 104.5 | - | 5.5 - 4.7 | C | Real Clinical SOBP, 6 pixel rows (512 offset), 100mm distal edge using clinical weighting with approx. equal time to deliver each layer with single on-axis spot. |