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

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Beam Time Request Forms

https://www.hep.ucl.ac.uk/pbt/wikiData/BeamRequests/Trento_09_2025/

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

UCL_Setup.png


Fiber Module Experiment Equipment

Item Notes
2D Fiber Arrays 2 Modules of vertical and horizontal fibers
Read-out electronics 2 Hamamatsu S13885-128 photodiode array each coupled to a Hamamatsu C9118-02 driver circuit
ZYBO Z7-10 Diligent FPGA development board. To provide clocks to C9118.
NI USB-6366 Multifunction I/O device. For interfacing between C9118 and PC.
DAQ laptop x1 Control photodiode acquisition.

Experiment Plan

For each beam delivery, our acquisition time is 5 seconds. This gives us an optimal number of events. For FLASH beam time restrictions, we could consider reducing the acquisition time, if necessary.

  • Set up mains cabling and networking in treatment and control rooms.
    • no beam
  • Install Peli case on treatment couch.
    • no beam
  • Background
    • no beam
  • Calibration shoot-through measurements of 4 stack modules: either rotating case or modules for back shoot-through:
    • 8 beam deliveries 245 MeV conventional current (2 beam deliveries (back and forth) per each module)
    • additional 2 or 3 beam deliveries 245 MeV at conventional current might be needed to find the minimum DDC232 FSR that does not saturate the signal.
    • 8 beam deliveries 245 MeV FLASH current (2 beam deliveries (back and forth) per each module)
    • additional 2 or 3 beam deliveries 245 MeV at FLASH current might be needed to find the minimum DDC232 FSR that does not saturate the signal.
  • Pristine Bragg peak measurements at clinical current for full clinical range:
    • 19 beam deliveries from 245 MeV and 240 to 70 MeV in 10 MeV steps.
  • Pristine Bragg peak measurements at FLASH current for full clinical range:
    • 19 beam deliveries from 245 MeV and from 240 to 70 MeV in 10 MeV steps at FLASH current.
      • if there is FLASH beam time limitation we can take less energies points. Moreover, we could reduced the acquisition time for each FLASH beam delivery.
  • Spot scanning:
    • pristine Bragg Peak measurements at fixed energy (i.e. 150 MeV and 245 MeV) and clinical current shifting the beam up, down, left and right wrt isocenter by 3mm
      • 4 beam deliveries per energy

Setup

  • Peli case set up on FLASH station.
  • Network connected through TIFPA experimental room patch panel:
    • Inside experimental room:
      • Long cable from patch panel (1) to DLink switch.
      • Long cable from switch to QuARC.
      • Short cable from switch to profile monitor DAQ laptop.
    • Inside control room:
      • Long cable from patch panel (5) to GL.iNet Slate router.
      • Short cables to laptops.
  • Case aligned to room lasers:
    • Blocks used for levelling.
    • Set up on height adjustable platform.
    • Aligned to front cover plate.

Measurements

Calibration conventional and FLASH

Approximately 100 minutes running 29/09/2025 (20:50–22:30). Peli case set up without movable stage: 1cm block under front, ~3mm under rear to level case. Isocentre at upstream face of first stack (level with inner edge of wheel mounts). Alignment checked with in room lasers after each adjustment. Beam optics are different between CONV mode and FLASH mode: other than FLASH shoot through measurement with stack 1, running restricted to CONV mode (current sufficient at maximum ion source current to almost saturate QuARC). SciFi monitor not installed.


Run number Modules Beam Energy (MeV) Estimated Range (mm) Ion Source Current (nA) Delivered protons Irradiation time Spot size (mm, FWHM) DDC232 FSR (pC) DDC232 Integration Time (us) Acquisition Time (s) Degrader WET (mm) Beam setup Comments Photodiode QB Fit Replay Fit
1 1, 2, 3 Background 0 0 0 N/A 12.5 220 3 0 Background Lid open
2 1 Background N/A 0 0 0 N/A 12.5 170 3 0 Background Lid open
3 1 Background N/A 0 0 0 N/A 12.5 170 3 0 Background Lid open, added network switch to DAQ chain
4 1 Background N/A 0 0 0 N/A 12.5 170 3 0 Background Lid closed, BG with lid open ~0.10pC per PD, lid closed ~0.014pC
5 1 Background N/A 0 0 0 N/A 12.5 170 3 0 Background Lid open, Added long network cable between switch and wall patch panel
6 1 Background N/A 0 0 0 N/A 12.5 170 3 0 Background Lid closed, Peli case moved to FLASH beamline station and aligned with lasers @15.13
7 1 Background N/A 0 0 0 N/A 12.5 170 5 50 Background Peli case aligned, cover plates removed, 50mm WET installed
8 1 228 325 - - - 6.8 12.5 170 5 50 FLASH, low current, shoot through front Only 50% of measurements acquired, saturating; aiming for 1nA at detector
9 1 228 325 - - - 6.8 12.5 170 5 50 FLASH, low current, shoot through front 4 sheets saturating; aiming for 0.5nA at detector
10 1 228 325 - - - 6.8 12.5 170 5 50 FLASH, low current, shoot through front Sheets saturating; aiming for 0.5nA at detector; switching to CONV optics
11 1 228 325 10 4E9 - 6.8 12.5 170 5 50 CONV, high current, shoot through front Switch to CONV mode, good FSR
12 1 228 325 20 - - 6.8 350 170 5 50 CONV, high current, shoot through front ~20nA isocentre, ~120pC per sheet maximum
13 1 228 325 - 3E12 - 6.8 350 170 3 50 CONV, high current, shoot through front ~50nA isocentre, ~270pC per sheet maximum, Raspberry Pi frozen, restarted: only ~58% measurements recorded
14 1 Background N/A 0 0 0 N/A 12.5 170 3 50 Background Lid closed, stack rotated
15 1 228 325 10 4E9(?) - 6.8 12.5 170 5 50 CONV, shoot through back ~1nA isocentre(?)
16 2 Background N/A 0 0 0 N/A 12.5 170 5 50 Background Lid closed, module 2 installed
n Stack 4 245 MeV FLASH min FSR that does not saturate the signal 170 Shoot through front N/A
n Stack 4 245 MeV conventional min FSR that does not saturate the signal 170 Shoot through back N/A
n Stack 4 245 MeV FLASH min FSR that does not saturate the signal 170 Shoot through back N/A
n Stack 4 Background - N/A - 170 N/A

Bragg Peak Measurements

Run number Detector Beam Energy (MeV) Estimated Range (mm) Current (nominal) (nA) Spot size (mm, FWHM) DDC232 FSR (pC) DDC232 Integration Time (us) Degrader WET (mm) Comments Photodiode QB Fit Replay Fit
n Full Stack (1-2-3-4) Background - - N/A 350 170 (constant) N/A
n Full Stack 245 MeV - - N/A 12.5 170 N/A
n Full Stack 240 MeV - - N/A 12.5 170 N/A
n Full Stack 230 MeV - - N/A 12.5 170 N/A
n Full Stack 220 MeV - - N/A 12.5 170 N/A
n Full Stack 210 MeV - - N/A 12.5 170 N/A
n Full Stack 200 MeV - - N/A 12.5 170 N/A
n Full Stack 190 MeV - - N/A 12.5 170 N/A
n Full Stack 180 MeV - - N/A 12.5 170 N/A
n Full Stack 170 MeV - - N/A 12.5 170 N/A
n Full Stack 160 MeV - - N/A 12.5 170 N/A
n Full Stack 150 MeV - - N/A 12.5 170 N/A
n Full Stack 140 MeV - - N/A 12.5 170 N/A
n Full Stack 130 MeV - - N/A 12.5 170 N/A
n Full Stack 120 MeV - - N/A 12.5 170 N/A
n Full Stack 110 MeV - - N/A 12.5 170 N/A
n Full Stack 100 MeV - - N/A 12.5 170 N/A
n Full Stack 90 MeV - - N/A 12.5 170 N/A
n Full Stack 80 MeV - - N/A 12.5 170 N/A
n Full Stack 70 MeV - - N/A 12.5 170 N/A
n Full Stack 70 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 80 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 90 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 100 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 110 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 120 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 130 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 140 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 150 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 160 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 170 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 180 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 190 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 200 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 210 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 220 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 230 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 240 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack 245 MeV - - N/A t.b.d. 170 FLASH N/A
n Full Stack Background - - 170 N/A

Spot scanning Measurements

Run number Detector Beam Energy (MeV) Estimated Range (mm) Current (nominal) (nA) Spot size (mm, FWHM) DDC232 FSR (pC) DDC232 Integration Time (us) Degrader WET (mm) Comments Photodiode QB Fit Replay Fit
n Full Stack 245 MeV - - N/A 12.5 170 top N/A
n Full Stack 245 MeV - - N/A 12.5 170 bottom N/A
n Full Stack 245 MeV - - N/A 12.5 170 left N/A
n Full Stack 245 MeV - - N/A 12.5 170 right N/A
n Full Stack 150 MeV - - N/A 12.5 170 top N/A
n Full Stack 150 MeV - - N/A 12.5 170 bottom N/A
n Full Stack 150 MeV - - N/A 12.5 170 left N/A
n Full Stack 150 MeV - - N/A 12.5 170 right N/A
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