Proton Calorimetry/Experimental Runs/2022/Sep1

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Detector Equipment

  • C-section stack holder containing 25 clear scintillator sheets around 2.86 mm thick with 24 sheets of mylar foil. Add 25th sheet of Mylar?
  • C-section stack holder containing 23 white painted scintillator sheets around 2.86 mm thick.
  • Zarges case.
  • Clatterbridge stack A and B (to be assembled during beam test)
  • DDC232 rev. B x2 & Nexys Video.
  • Single Scintillator Block & camera.

Experiment Equipment

Item Notes
Network Hub Set in control room to take output from experimental room ethernet connection. Control laptops connected via 5GHz WiFi.
Control Laptop x3 2 for remote control of CMOS sensor and FPGA, 1 for notes/web GUI.
Ethernet Cable x 3 To connect DAQ laptops to network in the experimental room, network hub to network in control room.
Portable Enclosure Modified Big Zarges Waterproof Wheeled Equipment Case.

Features mount for scintillator stack, front and back openings for beam, patch panel with ports for SHV, BNC, SMA, USB, Camera Link cables.
Hole for sensor powering.
Mylar windows with Al support mounted to internal face: approximately light-tight.

Rev. B Scintillator stack 49 (25 clear, 23 white painted and 1 black painted) X x 100 mm, Y x 100 mm and Z x (approx) 2.8 mm sheets in ascending order from the front/beam of the end of the scintillator. Sheet numbers from front to end (in beam direction gantry angle 270°): 79, 68, 73, 62, 81, 72, 64, 67, 65, 71, 78, 77, 74, 75, 85, 82, 83, 76, 70, 80, 69, 84, 63, 66, 61, 34, 43, 32, 8, 40, 37, 38, 47, 46, 33, 42, 9, 39, 44, 49, 50, 31, 1, 45, 3, 54, 5, 51, 26. Full stack thickness measurements (in mm): 138.12, 137.74, 137.74.
Rev. C Scintillator stack 32 X x 105 mm, Y x 105 mm and Z x (approx) 3 mm sheets (21 3.4 mm and 11 2.0 mm) in ascending order from the front/beam of the end of the scintillator. Sheet numbers from front to end (in beam direction gantry angle 90°): 117, 113, 134, 110, 108, 128, 107, 106, 127, 105, 104, 125, 103, 102, 124, 101, 98, 123, 97, 96, 122, 94, 93, 121, 92, 90, 120, 89, 88, 119, 87, 135. Full stack thickness measurements (in mm): 95.87, 95.96, 95.97.
DAQ laptop x2 Control CMOS sensor and photodiode acquisition.
ISDI CMOS sensor sensor pixel dimension: 1030 x 1536. NO optical grease between scintillator and sensor. Connected to DAQ PC via Camera Link cable.
Nexys Video FPGA development board. For interfacing between DDC232 and PC.
Rev. B Texas Instruments DDC232 custom circuit board (x3) Each housing 16x Hamamatsu S12915-16R photodiodes, coupled directly to scintillator sheets. Aligned by eye to scintillator sheets.
Rev. C Texas Instruments DDC232 custom circuit board (x1) Housing 32x Hamamatsu S12915-16R photodiodes, coupled directly to scintillator sheets. Aligned by eye to scintillator sheets.
Gloves For handling scintillator

Schematic

UCL_Setup.png

Experiment Plan

Estimated first beam: 16.00.

  1. Set up mains cabling and networking in treatment and control rooms.
  2. Install Peli case and Giraffe on treatment couch:
    1. Set up 2 x 2.86mm stacks for shoot through measurement of range pullback at ~245MeV (no DAQ needed).
    2. Align Peli case and Giraffe using in-room lasers.
    3.  Measure range pullback of combined stack, each individual stack and empty case.
  3. Set up Peli case for range pullback measurement of single block:
    1. Remove long rail from Peli case and install single scintillator block.
    2. Simultaneously dismantle 2 x 2.86mm stacks and assemble Clatterbridge stacks with rev.B DDC board.
    3. Check alignment of Peli case and Giraffe.
    4. Measure range pullback of single block.
  4. Set up Peli case for range pullback measurement of 32 x 3mm stack:
    1. Remove single scintillator block.
    2. Install 32 x 3mm stack with rotated rail; reinstall long rail.
    3. Simultaneously install single scintillator block in Zarges case with camera.
    4. Check alignment of Peli case and Giraffe.
    5. Measure range pullback of 32 x 3mm stack.
  5. Set up Peli case for range pullback measurement of Clatterbridge stacks:
    1. Remove 32 x 3mm stack; install Clatterbridge stacks on long rail and clamp in place.
    2. Check alignment of Peli case and Giraffe.
    3. Measure range pullback of Clatterbridge stacks together and individually.
  6. Set up Zarges case for single block quenching measurements:
    1. Remove Peli case and Giraffe from treatment couch.
    2. Install Zarges case on treatment couch and align with room lasers.
    3. Connect DAQ and check camera functionality.
    4. Simultaneously set up Peli case with Clatterbridge stacks and FPGAs ready for shoot throughs.
    5. Measure light output from shoot through and set exposure time.
    6. Record photos of single block light output for energies from 70 MeV to ~150MeV (maximum energy with beam still in block).
  7. Set up Peli case for Clatterbridge DAQ measurements:
    1. Remove Zarges case from treatment couch; install Peli case with FPGA, cabling and Clatterbridge stacks.
    2. Check alignment of Peli case and DAQ hardware.
    3. Record DDC calibration data for shoot through and background.
  8. Set up Peli case for 32 x 3mm stack measurements:
    1. Remove Clatterbridge stacks and store safely.
    2. Install 32 x 3mm stack in Peli case with rev.C/D DDC board.
    3. Check alignment of Peli case and DAQ hardware.
    4. Measure background and shoot through of 32 x 3mm stack.
    5. Measure proton energies in range 70–110 MeV.
  9. Dismantle equipment, pack up and fuck off.

Experiment Notes

Range Pull Back Measurements

Range calorimeter measurements with CMOS sensor + photodiodes.

Images from Camera: /unix/www/html/pbt/wikiData/images/UCLH_Sep2022/Nikon

Photodiode hexadecimal data: /unix/pbt/data/uclh/20220901/DDC232

Run number Detector config Beam Energy (MeV) Beam Current (nA) Physical thickness (mm) D80 measured (mm) Comments
0 Clear stack + white stack 210 40 N/A 139.1 Nominal: 25.96 cm
1 Individual stack N/A N/A N/A 206.6
2 Individual stack N/A N/A N/A xxx
3 Empty Case N/A N/A N/A 200
4 REVD N/A N/A N/A 150
5 Single block N/A N/A N/A 100
6 Clatterb. A N/A N/A N/A 50
7 Clatterb. B N/A N/A N/A 12.5
8 Clatterb. A+B N/A 10 N/A 350
9 240 N/A 10 N/A 12.5
10 240 N/A 10 N/A 12.5
11 200 N/A 90 N/A 12.5
12 200 N/A 20 N/A 12.5
13 130 N/A 50 N/A 12.5
14 120 N/A 60 N/A 12.5
15 120 N/A 270 N/A 12.5
16 110 N/A 70 N/A 12.5
17 110 N/A 300 N/A 12.5
18 100 N/A 90 N/A 12.5
19 100 N/A 350 N/A 12.5
20 90 N/A 110 N/A 12.5
21 90 N/A 400 N/A 12.5
22 80 N/A 500 N/A 12.5
23 70 N/A 700 N/A 12.5
24 130 N/A 200 N/A 12.5
25 200 N/A 20 N/A 12.5 170 50 LH shoot through; 270° gantry; CMOS sensor fine; N/A N/A
26 130 N/A 200 N/A 12.5 170 0 270° gantry; CMOS sensor saturated; N/A N/A
27 120 N/A 270 N/A 12.5 170 0 270° gantry; CMOS sensor saturated; N/A N/A
28 110 N/A 300 N/A 12.5 170 0 270° gantry; CMOS sensor saturated; N/A N/A
29 100 N/A 350 N/A 12.5 170 0 270° gantry; CMOS sensor saturated; N/A N/A
30 90 N/A 400 N/A 12.5 170 0 270° gantry; CMOS sensor saturated; N/A N/A
31 80 N/A 500 N/A 12.5 170 0 270° gantry; CMOS sensor saturated; N/A N/A
32 70 N/A 700 N/A 12.5 170 0 270° gantry; CMOS sensor saturated; N/A N/A
33 background N/A N/A N/A 12.5 170 0 RevC onwards; 270° gantry N/A N/A
34 240 N/A 13 N/A 12.5 170 50 LH shoot through; 270° gantry N/A N/A
35 240 N/A 13 N/A 12.5 170 50 RH shoot through; 90° gantry N/A N/A
36 110 N/A 300 N/A 12.5 170 0 90° gantry; N/A N/A
37 105 N/A 350 N/A 12.5 170 0 90° gantry; N/A N/A
38 100 N/A 350 N/A 12.5 170 0 90° gantry; N/A N/A
39 95 N/A 400 N/A 12.5 170 0 90° gantry; N/A N/A
40 90 N/A 400 N/A 12.5 170 0 90° gantry; N/A N/A
41 85 N/A 500 N/A 12.5 170 0 90° gantry; N/A N/A
42 80 N/A 500 N/A 12.5 170 0 90° gantry; N/A N/A
43 75 N/A 700 N/A 12.5 170 0 90° gantry; N/A N/A
44 70 N/A 700 N/A 12.5 170 0 90° gantry; N/A N/A

Light Quenching Measurements

Run number Image number Beam Energy (MeV) Estimated Range (mm) Current (nA) Spot size (mm, FWHM) Shutter Speed (s) Aperture ISO Degrader WET (mm) Comments Image Fit
0 DSC_1628 160 125 1 f3 ISO100 0
[PIC]
1 DSC_1628 160 125 1 f3 ISO100 0
[PIC2]

Calibration and Bragg Peak Measurements

Run number Detector Beam Energy (MeV) Estimated Range (mm) Current (nA) Spot size (mm, FWHM) DDC232 FSR (pC) DDC232 Integration Time (us) Degrader WET (mm) Comments Photodiode QB Fit Replay Fit
0 A Background N/A N/A N/A 350 170 0 room light off N/A N/A
1 A Background N/A N/A N/A 300 170 0 room light off N/A N/A
2 A Background N/A N/A N/A 250 170 0 room light off N/A N/A
3 A Background N/A N/A N/A 200 170 0 room light off N/A N/A
4 A Background N/A N/A N/A 150 170 0 room light off N/A N/A
5 A Background N/A N/A N/A 100 170 0 room light off N/A N/A
6 A Background N/A N/A N/A 50 170 0 room light off N/A N/A
7 A Background N/A N/A N/A 12.5 170 0 room light off (continued) N/A N/A
8 A 240 N/A 10 N/A 350 170 50 LH shoot through; 270° gantry; CMOS sensor saturated N/A N/A
9 A 240 N/A 10 N/A 12.5 170 50 LH shoot through; 270° gantry; CMOS sensor saturated N/A N/A
10 A 240 N/A 10 N/A 12.5 170 50 RH shoot through; 90° gantry; CMOS sensor saturated N/A N/A
11 A 200 N/A 90 N/A 12.5 170 50 RH shoot through; 90° gantry; CMOS sensor saturated; N/A N/A
12 A 200 N/A 20 N/A 12.5 170 50 RH shoot through; 90° gantry; CMOS sensor fine; N/A N/A
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