Proton Calorimetry/Experimental Runs/2022/ClatterbridgeQuARC

Detector Equipment

• Stack A: 14 clear sheets of scintillator around 2.86 mm thick, with mylar foil for optical isolation, in C-section stack holder and coupled to single Rev. B DDC232 board.
• Stack B: 11 clear sheets and 3 white painted sheets of scintillator with mylar foil for optical isolation (clear sheets), in C-section stack holder and coupled to single Rev. B DDC232 board.
• DAQ using USB104 A7 FPGA and Raspberry Pi (running web GUI).

Preliminary Stack Configurations

Clatterbridge Stack A

1) Sheet Number: 61, thickness: 2.91 mm 2) Sheet Number: 63, thickness: 2.9 mm 3) Sheet Number: 69, thickness: 2.86 mm 4) Sheet Number: 65, thickness: 2.85 mm 5) Sheet Number: 70, thickness: 2.85 mm 6) Sheet Number: 64, thickness: 2.84 mm 7) Sheet Number: 81, thickness: 2.84 mm 8) Sheet Number: 83, thickness: 2.84 mm 9) Sheet Number: 85, thickness: 2.84 mm 10) Sheet Number: 73, thickness: 2.83 mm 11) Sheet Number: 74, thickness: 2.83 mm 12) Sheet Number: 78, thickness: 2.83 mm 13) Sheet Number: 71, thickness: 2.79 mm 14) Sheet Number: 77, thickness: 2.79 mm

Order: 81, 83, 65, 74, 69, 78, 61, 77, 63, 71, 70, 73, 64, 85

Average thickness: 2.843 mm Stack thickness (excluding mylar): 39.8 mm Stack thickness (including mylar): 40.3 mm

Clatterbridge Stack B

1) Sheet Number: 68, thickness: 2.78 mm 2) Sheet Number: 75, thickness: 2.78 mm 3) Sheet Number: 82, thickness: 2.78 mm 4) Sheet Number: 62, thickness: 2.77 mm 5) Sheet Number: 72, thickness: 2.77 mm 6) Sheet Number: 76, thickness: 2.77 mm 7) Sheet Number: 67, thickness: 2.76 mm 8) Sheet Number: 80, thickness: 2.76 mm 9) Sheet Number: 84, thickness: 2.76 mm 10) Sheet Number: 66, thickness: 2.74 mm 11) Sheet Number: 79, thickness: 2.74 mm

12) Sheet Number: 52, thickness: 3.02 mm 13) Sheet Number: 54, thickness: 3 mm 14) Sheet Number: 51, thickness: 2.97 mm

Order: 52, 79, 68, 66, 75, 82, 84, 62, 80, 72, 67, 76, 51, 54

Average thickness: 2.814 mm Stack thickness (excluding mylar): 39.4 mm Stack thickness (including mylar): 39.9 mm

Experiment Plan

• 60 MeV pristine Bragg peak measurements (and with some absorber for different ranges?):
  • Stack A front and back.
  • Stack B front and back(?)
• SOBP measurements (one type only?):
  • Stack A front and back.
  • Stack B front and back(?)

Experiment Notes

Stack A + NUC PC.

Beam current nominally 1nA.

Range in eye tissue of 60MeV: 29.3mm

Degrader WET given in eye tissue water equivalent thickness. Multiply degrader WET by 1.05 to get actual WET.

Run number	Beam Energy (MeV)	Dose Rate (MU/min)	Estimated Range in Eye (mm)	Spot size (mm, FWHM)	Degrader Eye WET (mm)	DDC232 FSR (pC)	DDC232 Integration Time (us)	Measurements	Comments	Photodiode QB Fit	Replay Fit
0	Background	-	-	N/A	-	12.5	170 (constant)	30,000		N/A
1	60	20	29.3	34	0	12.5	170 (constant)	30,000		N/A
2	60	20	29.3	34	0	12.5	170 (constant)	30,000		N/A
3	60	20	29.3	34	0	12.5	170 (constant)	30,000		N/A
4	60	20	28.3	34	1	12.5	170 (constant)	30,000		N/A
5	60	20	27.3	34	2	12.5	170 (constant)	30,000		N/A
6	60	20	26.3	34	3	12.5	170 (constant)	30,000		N/A
7	60	20	25.3	34	4	12.5	170 (constant)	30,000		N/A
8	60	20	24.3	34	5	12.5	170 (constant)	30,000		N/A
9	60	20	23.3	34	6	12.5	170 (constant)	30,000		N/A
10	60	20	22.3	34	7	12.5	170 (constant)	30,000		N/A
11	60	20	21.3	34	8	12.5	170 (constant)	30,000		N/A
12	60	20	20.3	34	9	12.5	170 (constant)	30,000		N/A
13	60	20	19.3	34	10	12.5	170 (constant)	30,000		N/A
14	60	20	17.3	34	12	12.5	170 (constant)	30,000		N/A
15	60	20	15.3	34	14	12.5	170 (constant)	30,000		N/A
16	60	20	13.3	34	16	12.5	170 (constant)	30,000		N/A
17	60	20	11.3	34	18	12.5	170 (constant)	30,000		N/A
18	60	20	9.3	34	20	12.5	170 (constant)	30,000		N/A
19	60	20	29.3	34	0	12.5	170 (constant)	100,000		N/A
20	60	20	29.3	34	0.6 (eye tissue)	12.5	170 (constant)	100,000	Modulator reference: 292/92 Range(mm eye tissue):28.8 Modulation eye tissue: 14.1	N/A
21	60	20	29.3	34	2 (eye tissue)	12.5	170 (constant)	100,000	Modulator reference: 132/19. Range (mm eye tissue):27.3; modulation (mm eye tissue): 27.3	N/A