Proton Calorimetry/Experimental Runs/2017/Mar1-3

Include all details from experimental runs.

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01-02/03/2017

Hamamatsu Base + Standard 45 cm Cuboid Tests

High Voltage (V)	Trigger	Rate + Additional Information	Electronics Setup	Collimator Size + Additional Information	Run Number
-900	ST	I (Beam off): 150.15 μA	DC offset: -30 Rec. length: 456 Threshold: 40 LSB Gate offset: 10	6 mm collimator 252.4 MeV beam
-800	ST	I (Beam off): 133.25 μA I (Beam on): 240 μA Beam energy: 252.4 MeV (runs 001 - 016)	BL mean: 32 Charge sens.: 20 fV/LSB Long gate: 150 ns	5 second beam spill	001
-800	ST		Threshold: 40 LSB Long gate: 50 ns		002
-800	ST		Threshold: 55 LSB Long gate: 50 ns		003
-800	ST		Threshold: 55 LSB Long gate: 50 ns	30 second beam spill	004
-800	ST		Threshold: 55 LSB Long gate: 50 ns		005
-800	ST		Threshold: 55 LSB Long gate: 50 ns		006
-800	ST		Threshold: 55 LSB Long gate: 50 ns		007
-800	ST	Increase acquisition gate to see pile up effect	Long gate: 150 ns		008
-800	ST		Long gate: 30 ns		009
-900	ST		Long gate: 30 ns		010
-1000	ST	I (beam off): 167 μA I (beam on): ~269 μA	Long gate: 30 ns		011
-1000	ST		Long gate: 30 ns		012
-1000	ST		Long gate: 30 ns		013
-1000	ST		Long gate: 50 ns		014
-1000	ST		Long gate: 20 ns		015
-1000	ST		Long gate: 20 ns		016
-1000	ST	62 MeV beam (runs 017-019)	Long gate: 20 ns	62 MeV beam	017
-1000	ST		Long gate: 100 ns		018
-1200	ST		Long gate: 100 ns		019
-1200	ST	100 MeV beam (run 020)	Long gate: 100 ns	100 MeV beam	020
End of test beam

02-03/03/2017

Continuation of Hamamatsu Tests

High Voltage (V)	Trigger	Rate + Additional Information	Electronics Setup	Collimator Size + Additional Information	Run Number
-1000	ST	I (beam off): 167.05 μA I (beam on): ~240 μA Rate: ~7 kHz at -7 mV threshold		4 mm collimator +6 mm collimator after first collimator
			Long gate: 100 ns Threshold: 55 LSB	252.4 MeV beam 30 second beam spill	021
-1000	ST	Rate: ~4-5 kHz	Gate offset: 20 ns Long gate: 100 ns Threshold: 55 LSB		022
-1000	ST	Rate: ~20 kHz		102.4 MeV beam	023
-1000	ST	Beam shifted during run			024
-1000	ST	Beam shifted during run			025
-1000	ST			62.4 MeV beam	026
-1000	ST			4 mm collimator removed 6 mm collimator moved to isocentre Distance between collimator and detector increased	027
-1000	ST			252.4 MeV beam	028
-1000	ST	70 A setting for synchrotron	All electronics as above		029
-1000	ST	70 A setting for synchrotron			030
-1000	ST	0 A, last quad off Rate: ~300 kHz			031
-1000	ST	Second quad on, 35 A Rate: ~150-200 kHz			032
-1000	ST	Second quad: 40 A Rate: 100-200 kHz Note: Best looking spectrums at 252 MeV so far			033
-1000	ST				034
-1000	ST	Rate: ~100 kHz Chopper magnet to 470 A (435 by default), scraping on outer chopper dunip. (??) Great spectra!			035
-1000	ST				036
-1000	ST				037
-1000	ST				038
-1000	ST			232.4 MeV	039
-1000	ST				040
-1000	ST	Rate: ~100-150 kHz		212.4 MeV	041
					042
					043
-1000	ST	Rate: ~100-150 kHz		192.4 MeV	044
-1000	ST	Rate: ~100-150 kHz		172.4 MeV	045
					046
-1000	ST				047
-1000	ST			152.4 MeV	048
-1000	ST				049
-1000	ST			132.4 MeV	050
-1000	ST				051
-1000	ST	Strange oscillating behaviour between two points at this energy		112.4 MeV	052
-1000	ST				053
-1000	ST			92.4 MeV	054
-1000	ST				055
-1000	ST			72.4 MeV	056
-1000	ST				057
-1000	ST			62.4 MeV	058
-1000	ST				059
-1000	ST	Back to 112.4 MeV to investigate strange energy. At the beginning of the spill the small higher ADC count peak starts growing, then moves onto "main" peak and grow until the end of the run		112.4 MeV	060
-1000	ST	Rate: 28 kHz			061
-1000	ST	Rate: 2 kHz		64.2 MeV	062
-1000	ST	Rate: ~100 kHz Count rate increasing by moving chopper	Peak shifts to lower ADC		063
-1000	ST	Settings as for run 062 Rate: 1-2 kHz	Peak shifts back up		064
-1000	ST	Rates to be increased again Rate: ~20-30 kHz	Peak shifts down again		065
-1000	ST	Settings as for run 063 Rate: 100 kHz			066
-1000	ST	Same oscillating behaviour as for energy 112 MeV, but a lit less extreme			067
-1000	ST	Keep increasing rates Rate: 250-300 kHz 228 A			068
-1000	ST	Nominal medical settings Rate: 250 kHz			069
-1000	ST				070
-1000	ST	Rate: 400 kHz		5 second beam spill	071
-1000	ST	Rate: >400 kHz Degrader: 20%			072
-1000	ST				073
-1000	ST	Next step up in degrader, 50%. The data becomes invalid at this point. Flat top intensity: 8.8×109			074
-1000	ST	Rate: >400 kHz Nominal medical beam settings		30 second beam spill 252.4 MeV beam	075
-1000	ST			Waveforms (~500 MB)	076
-1000	ST	Current settings changed for lower rates Rate: 300 kHz		Waveforms	077
End of test beam

Counts on integrated intensity monitor: 4,523,000 at 22:53 GMT Final count: 33,600,000 at 04:03 GMT 1×10⁴ to 2×10⁴ protons per count