Proton Calorimetry/Experimental Runs/2022/Jun16

Afternoon test at UCLH with photodiodes and CMOS sensor.

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.
Scintillator stack	X x 10 mm, Y x 10 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): 51, 5, 54, 3, 45, 1, 31, 50, 49, 44, 39, 9, 42, 33, 46, 47, 38, 37, 40, 8, 32, 43, 34, 41, 52, 6, 55, 4, 35, 11, 36, 24. Full stack thickness measurements (in mm): 90.61, 90.65.
DAQ laptop x2	Control CMOS sensor and photodiode acquisition.
Nexys Video FPGA development board.	For interfacing between DDC232 and PC.
Rev. 2 Texas Instruments DDC232 custom circuit board (x2)	Each housing 16x Hamamatsu S12915-16R photodiodes, coupled directly to scintillator sheets with optical gel. Aligned by eye to scintillator sheets.
Gloves	For handling scintillator
Optical Gel	For photodiode-scintillator optical coupling

Schematic

Experiment Plan

• Background & calibration shoot-throughs (background at all 8 DDC232 full-scale ranges)
• Pencil beams, 70-110 MeV, 5 MeV steps, 2 currents (high/low)
• Live fit demo: pencil beam 100-110 MeV
• Treatment plan: range steps, 110 MeV-70 MeV, 1 MeV steps, no x-y scanning (demo live fit)
• ±1, 2, 3, 4mm in x-y planes, 100 MeV
• Detector misalignment, ±2°, ±5°, ±10° 100 MeV

Experiment Notes

Range calorimeter measurements with CMOS sensor + photodiodes.

Images from Sensor: /unix/www/html/pbt/wikiData/images/UCLH_Jun2022/CMOS

Photodiode hexadecimal data: /unix/pbt/data/uclh/20220616/DDC232

Run number	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	CMOS QB Fit	PDL Comparison	Replay Fit
0	Background	N/A	N/A	N/A	350	170	0	room light off	N/A	N/A	N/A	N/A
1	Background	N/A	N/A	N/A	300	170	0	room light off	N/A	N/A	N/A	N/A
2	Background	N/A	N/A	N/A	250	170	0	room light off	N/A	N/A	N/A	N/A
3	Background	N/A	N/A	N/A	200	170	0	room light off	N/A	N/A	N/A	N/A
4	Background	N/A	N/A	N/A	150	170	0	room light off	N/A	N/A	N/A	N/A
5	Background	N/A	N/A	N/A	100	170	0	room light off	N/A	N/A	N/A	N/A
6	Background	N/A	N/A	N/A	50	170	0	room light off	N/A	N/A	N/A	N/A
7	Background	N/A	N/A	N/A	12.5	170	0	room light off (continued)	N/A	N/A	N/A	N/A
8	240	N/A	10	N/A	350	170	50	LH shoot through; 270° gantry; CMOS sensor saturated	N/A	N/A	N/A	N/A
9	240	N/A	10	N/A	12.5	170	50	LH shoot through; 270° gantry; CMOS sensor saturated	N/A	N/A	N/A	N/A
10	240	N/A	10	N/A	12.5	170	50	RH shoot through; 90° gantry; CMOS sensor saturated	N/A	N/A	N/A	N/A
11	200	N/A	90	N/A	12.5	170	50	RH shoot through; 90° gantry; CMOS sensor saturated;	N/A	N/A	N/A	N/A
12	200	N/A	20	N/A	12.5	170	50	RH shoot through; 90° gantry; CMOS sensor fine;	N/A	N/A	N/A	N/A
13	130	N/A	50	N/A	12.5	170	0	90° gantry; CMOS sensor slight saturation;	N/A	N/A	N/A	N/A
14	120	N/A	60	N/A	12.5	170	0	90° gantry; CMOS sensor saturated;	N/A	N/A	N/A	N/A
15	120	N/A	270	N/A	12.5	170	0	90° gantry; CMOS sensor saturated;	N/A	N/A	N/A	N/A
16	110	N/A	70	N/A	12.5	170	0	90° gantry; CMOS sensor saturated;	N/A	N/A	N/A	N/A
17	110	N/A	300	N/A	12.5	170	0	90° gantry; CMOS sensor saturated;	N/A	N/A	N/A	N/A
18	100	N/A	90	N/A	12.5	170	0	90° gantry; CMOS sensor saturated;	N/A	N/A	N/A	N/A
19	100	N/A	350	N/A	12.5	170	0	90° gantry; CMOS sensor saturated;	N/A	N/A	N/A	N/A
20	90	N/A	110	N/A	12.5	170	0	90° gantry; CMOS sensor fine;	N/A	N/A	N/A	N/A
21	90	N/A	400	N/A	12.5	170	0	90° gantry; CMOS sensor fine;	N/A	N/A	N/A	N/A
22	80	N/A	500	N/A	12.5	170	0	90° gantry; CMOS sensor fine;	N/A	N/A	N/A	N/A
23	70	N/A	700	N/A	12.5	170	0	90° gantry; CMOS sensor fine;	N/A	N/A	N/A	N/A
24	130	N/A	200	N/A	12.5	170	0	90° gantry; CMOS sensor saturated;	N/A	N/A	N/A	N/A
25	200	N/A	20	N/A	12.5	170	50	LH shoot through; 270° gantry; CMOS sensor fine;	N/A	N/A	N/A	N/A
26	130	N/A	200	N/A	12.5	170	0	270° gantry; CMOS sensor saturated;	N/A	N/A	N/A	N/A
27	120	N/A	270	N/A	12.5	170	0	270° gantry; CMOS sensor saturated;	N/A	N/A	N/A	N/A
28	110	N/A	300	N/A	12.5	170	0	270° gantry; CMOS sensor saturated;	N/A	N/A	N/A	N/A
29	100	N/A	350	N/A	12.5	170	0	270° gantry; CMOS sensor saturated;	N/A	N/A	N/A	N/A
30	90	N/A	400	N/A	12.5	170	0	270° gantry; CMOS sensor saturated;	N/A	N/A	N/A	N/A
31	80	N/A	500	N/A	12.5	170	0	270° gantry; CMOS sensor saturated;	N/A	N/A	N/A	N/A
32	70	N/A	700	N/A	12.5	170	0	270° gantry; CMOS sensor saturated;	N/A	N/A	N/A	N/A
33	background	N/A	N/A	N/A	12.5	170	0	RevC onwards; 270° gantry	N/A	N/A	N/A	N/A
34	240	N/A	13	N/A	12.5	170	50	LH shoot through; 270° gantry	N/A	N/A	N/A	N/A
35	240	N/A	13	N/A	12.5	170	50	RH shoot through; 90° gantry	N/A	N/A	N/A	N/A
36	110	N/A	300	N/A	12.5	170	0	90° gantry;	N/A	N/A	N/A	N/A
37	105	N/A	350	N/A	12.5	170	0	90° gantry;	N/A	N/A	N/A	N/A
38	100	N/A	350	N/A	12.5	170	0	90° gantry;	N/A	N/A	N/A	N/A
39	95	N/A	400	N/A	12.5	170	0	90° gantry;	N/A	N/A	N/A	N/A
40	90	N/A	400	N/A	12.5	170	0	90° gantry;	N/A	N/A	N/A	N/A
41	85	N/A	500	N/A	12.5	170	0	90° gantry;	N/A	N/A	N/A	N/A
42	80	N/A	500	N/A	12.5	170	0	90° gantry;	N/A	N/A	N/A	N/A
43	75	N/A	700	N/A	12.5	170	0	90° gantry;	N/A	N/A	N/A	N/A
44	70	N/A	700	N/A	12.5	170	0	90° gantry;	N/A	N/A	N/A	N/A