Proton Calorimetry/Experimental Runs/2025/Trento 2025-03

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 x2	1 for remote control of FPGA, 1 for notes/web GUI.
Ethernet Cable x 2	To connect DAQ laptop to network in the experimental room, control laptop to network in control room.
Portable Enclosure
Scintillator stacks	4 Modules (to cover the full clinical range, from 60 to 250 MeV)
Scintillating fibers module	1 2D Module
DAQ laptop x1	Control photodiode acquisition.
Nexys Video FPGA development board.	For interfacing between DDC232 and PC.

Schematic

Experiment Plan

1. Set up mains cabling and networking in treatment and control rooms.
   1. no beam
2. Install Peli case on treatment couch.
   1. no beam
3. Background
   1. no beam
4. Calibration shoot-through measurements of 4 stack modules: either rotating case or modules for back shoot-through.
   1. 8 beam deliveries (2 beam deliveries (back and forth) per each module):

Run number	Detector config	Beam Energy (MeV)	Beam Current (nA)	Physical thickness (mm)	D80 measured (mm)	WET (mm)	RSP	Comments
33	Stack 1 front	245	18.8 (18.7)	95.95	198.69	98.24	1.024
34	Stack 1 back	245	18.8 (18.7)	95.95	198.74	98.19	1.023
36	Stack 2 front	245	18.8 (18.7)	96.81	198.51	98.42	1.016
37	Stack 3 front	245	18.8 (18.7)	95.48	199.78	97.15	1.017
40	Stack 4 front	245	18.8 (18.7)	94.07	202.26	94.67	1.006
41	Empty Box	245	18.8 (18.7)	0.012	296.93	0	0
42	No Box	245	18.8 (18.7)	0	296.90	0	0

1. Pristine Bragg peak measurements at clinical current for full clinical range.
2. FLASH measurements at 245 MeV.

Calibration FLASH

DDC232 FSR should be determined at max beam current starting from minimum FSR value that does not give signal saturation. This could require 2 or 3 beam deliveries.

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
n	Stack 1	245 MeV		max		min FSR that does not saturate the signal	170		Shoot through front	N/A
n	Stack 1	245 MeV		max		min FSR that does not saturate the signal	170		Shoot through back	N/A
n	Stack 1	Background		-	N/A	-	170			N/A
n	Stack 2	245 MeV		max		min FSR that does not saturate the signal	170		Shoot through front	N/A
n	Stack 2	245 MeV		max		min FSR that does not saturate the signal	170		Shoot through back	N/A
n	Stack 2	Background		-	N/A	-	170			N/A
n	Stack 3	245 MeV		max		min FSR that does not saturate the signal	170		Shoot through front	N/A
n	Stack 3	245 MeV		max		min FSR that does not saturate the signal	170		Shoot through back	N/A
n	Stack 3	Background		-	N/A	-	170			N/A
n	Stack 4	245 MeV		max		min FSR that does not saturate the signal	170		Shoot through front	N/A
n	Stack 4	245 MeV		max		min FSR that does not saturate the signal	170		Shoot through back	N/A
n	Stack 4	Background		-	N/A	-	170			N/A