Proton Calorimetry/Experimental Runs/2022/ClatterbridgeQuARC

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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
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