Proton Calorimetry/Experimental Runs/2025/Trento 2025-03: Difference between revisions

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[http://www.hep.ucl.ac.uk/pbt/wikiData/images/UCLH_Nov2021/UCL_Setup.png http://www.hep.ucl.ac.uk/pbt/wikiData/images/UCLH_Jun2022/UCL_Setup.png]
[http://www.hep.ucl.ac.uk/pbt/wikiData/images/UCLH_Nov2021/UCL_Setup.png http://www.hep.ucl.ac.uk/pbt/wikiData/images/UCLH_Jun2022/UCL_Setup.png]
</div>
</div>
== Fiber Module Experiment Equipment ==
{| class="wikitable"
! style="text-align: center;" | Item
! style="text-align: center;" | Notes
|-
| style="text-align: center;" | 2D Fiber Arrays
| style="text-align: center;" | 2 Modules of vertical and horizontal fibers 
|-
| style="text-align: center;" | Read-out electronics 
| style="text-align: center;" | 2 Hamamatsu S13885-128 photodiode array each coupled to a Hamamatsu C9118-02 driver circuit
|-
| style="text-align: center;" | ZYBO Z7-10 Diligent FPGA development board.
| style="text-align: center;" | To provide clocks to C9118.
|-
| style="text-align: center;" | NI USB-6366 Multifunction I/O device.
| style="text-align: center;" | For interfacing between C9118 and PC.
|-
| style="text-align: center;" | DAQ laptop x1
| style="text-align: center;" | Control photodiode acquisition.
|}


== Experiment Plan ==
== 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.
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.
* Set up mains cabling and networking in treatment and control rooms.
Line 59: Line 82:
*** 4 beam deliveries per energy
*** 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 29/09/2025 ==
* Approximately 100 minutes running 29/09/2025 (20:50&ndash;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.


=== Calibration conventional and FLASH ===
=== Calibration conventional and 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. 
 
{| class="wikitable"
{| class="wikitable"
!Run number  
!Run number  
!Detector
!Modules
!Beam Energy (MeV)
!Beam Energy (MeV)
!Estimated Range (mm)
!Estimated Range (mm)
!Current (nA)
!Ion Source Current (nA)
!Delivered protons
!Irradiation time
!Spot size (mm, FWHM)
!Spot size (mm, FWHM)
!DDC232 FSR (pC)
!DDC232 FSR (pC)
!DDC232 Integration Time (us)
!DDC232 Integration Time (us)
!Acquisition Time (s)
!Degrader WET (mm)
!Degrader WET (mm)
!Beam setup
!Comments
!Comments
!Photodiode QB Fit
!Photodiode QB Fit
!Replay Fit
!Replay Fit
|-
|-
|n || Stack 1 || 245 MeV|| || conventional || || min FSR that does not saturate the signal || 170 || || Shoot through front || N/A ||  
|1 || 1, 2, 3 || Background || || 0 || 0 || 0 || N/A || 12.5 || 220 || 3 || 0 || Background || Lid open || ||
|-
|-
|n || Stack 1 || 245 MeV|| || FLASH || || min FSR that does not saturate the signal || 170 || || Shoot through front || N/A ||  
|2 || 1 || Background || N/A || 0 || 0 || 0 || N/A || 12.5 || 170 || 3 || 0 || Background || Lid open || ||
|-
|-
|n || Stack 1 || 245 MeV|| || conventional || || min FSR that does not saturate the signal || 170 || || Shoot through back || N/A ||
|3 || 1 || Background || N/A || 0 || 0 || 0 || N/A || 12.5 || 170 || 3 || 0 || Background || Lid open, added network switch to DAQ chain || ||
|-
|-
|n || Stack 1 || 245 MeV|| || FLASH || || min FSR that does not saturate the signal || 170 || || Shoot through back || N/A ||
|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 || ||
|-
|-
|n || Stack 1 || Background || || - || N/A || - || 170 || || || N/A ||  
|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 || ||
|-
|-
|n || Stack 2 || 245 MeV|| || conventional || || min FSR that does not saturate the signal || 170 || || Shoot through front || N/A ||  
|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 || ||
|-
|-
|n || Stack 2 || 245 MeV|| || FLASH || || min FSR that does not saturate the signal || 170 || || Shoot through front || N/A ||  
|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 || ||
|-
|-
|n || Stack 2 || 245 MeV|| || conventional || || min FSR that does not saturate the signal || 170 || || Shoot through back || N/A ||
|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 || ||
|-
|-
|n || Stack 2 || 245 MeV|| || FLASH || || min FSR that does not saturate the signal || 170 || || Shoot through back || N/A ||
|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 || ||
|-
|-
|n || Stack 2 || Background || || - || N/A || - || 170 || || || N/A ||  
|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 || ||
|-
|-
|n || Stack 3 || 245 MeV|| || conventional || || min FSR that does not saturate the signal || 170 || || Shoot through front || N/A ||  
|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 || ||
|-
|-
|n || Stack 3 || 245 MeV|| || FLASH || || min FSR that does not saturate the signal || 170 || || Shoot through front || N/A ||  
|12 || 1 || 228 || 325 || 20 || - || - || 6.8 || 350 || 170 || 5 || 50 || CONV, high current, shoot through front || ~20nA isocentre, ~120pC per sheet maximum || ||
|-
|-
|n || Stack 3 || 245 MeV|| || conventional || || min FSR that does not saturate the signal || 170 || || Shoot through back || N/A ||
|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 || ||
|-
|-
|n || Stack 3 || 245 MeV|| || FLASH || || min FSR that does not saturate the signal || 170 || || Shoot through back || N/A ||
|14 || 1 || Background || N/A || 0 || 0 || 0 || N/A || 12.5 || 170 || 3 || 50 || Background || Lid closed, stack rotated || ||
|-
|-
|n || Stack 3 || Background || || - || N/A || - || 170 || || || N/A ||  
|15 || 1 || 228 || 325 || 10 || 4E9(?) || - || 6.8 || 12.5 || 170 || 5 || 50 || CONV, shoot through back || ~1nA isocentre(?) || ||  
|-
|-
|n || Stack 4 || 245 MeV|| || conventional || || min FSR that does not saturate the signal || 170 || || Shoot through front || N/A ||  
|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 ||  
|17 || 2 || 228 || 325 || 1 || - || - || 6.8 || 12.5 || 170 || 5 || 50 || Shoot through front || || ||
|-
|-
|n || Stack 4 || 245 MeV|| || conventional || || min FSR that does not saturate the signal || 170 || || Shoot through back || N/A ||
|18 || 2 || 228 || 325 || 1 || - || - || 6.8 || 12.5 || 170 || 5 || 50 || Shoot through back || Rotated and reinstalled stack || ||
|-
|-
|n || Stack 4 || 245 MeV|| || FLASH || || min FSR that does not saturate the signal || 170 || || Shoot through back || N/A ||
|19 || 3 || Background || N/A || 0 || 0 || 0 || N/A || 12.5 || 170 || 5 || 50 || Background || Lid closed, module 3 installed || ||
|-
|-
|n || Stack 4 || Background || || - || N/A || - || 170 || || || N/A ||  
|20 || 3 || 228 || 325 || 1 || - || - || 6.8 || 12.5 || 170 || 5 || 50 || Shoot through front || || ||
|-
|21 || 3 || 228 || 325 || 1 || - || - || 6.8 || 12.5 || 170 || 5 || 50 || Shoot through back || Rotated and reinstalled stack || ||
|-
|-
|}
|}


=== Bragg Peak Measurements ===
=== Bragg Peak Measurements ===
{| class="wikitable"
!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
|-
|22 || 1, 2, 3 || Background || || 0 || 0 || 0 || N/A || 12.5 || 220 || 5 || 0 || Background || Lid open, 3 modules installed || ||
|-
|23 || 1, 2, 3 || Background || || 0 || 0 || 0 || N/A || 12.5 || 220 || 5 || 0 || Background || Lid closed, 3 modules installed || ||
|-
|24 || 1, 2, 3 || 179 || 215 || 1 || 1.3E11 || 20 || 8.7 || 12.5 || 220 || 5 || 0 || CONV full energy || 4 photodiodes saturating: drop next current in half, 1.3E11 in 20s || ||
|-
|25 || 1, 2, 3 || 179 || 215 || 15nA || - || - || 8.7 || 12.5 || 220 || 5 || 0 || CONV full energy || 15nA ion source current, ~1nA isocentre || ||
|-
|26 || 1, 2, 3 || 179 || 215 || 300nA || - || - || 8.7 || 350 || 220 || 3 || 0 || CONV full energy, high current || 300nA ion source current, ~10nA isocentre || ||
|-
|27 || 1, 2, 3 || 179 || 215 || 250nA || - || - || 8.7 || 350 || 220 || 3 || 0 || CONV full energy, high current || 250nA ion source current, ~8.3nA isocentre || ||
|-
|28 || 1, 2, 3 || 179 || 215 || 200nA || - || - || 8.7 || 350 || 220 || 3 || 0 || CONV full energy, high current || 200nA ion source current, ~6.7nA isocentre || ||
|-
|29 || 1, 2, 3 || 179 || 215 || 150nA || - || - || 8.7 || 350 || 220 || 3 || 0 || CONV full energy, high current || 150nA ion source current, ~5nA isocentre || ||
|-
|30 || 1, 2, 3 || 179 || 215 || 100nA || - || - || 8.7 || 350 || 220 || 3 || 0 || CONV full energy, high current || 100nA ion source current, ~3.3nA isocentre || ||
|-
|31 || 1, 2, 3 || Background || || 0 || 0 || 0 || N/A || 350 || 220 || 3 || 0 || Background || || ||
|-
|32 || 1, 2, 3 || 179 || 215 || 60nA || - || - || 8.7 || 50 || 220 || 3 || 0 || CONV full energy, high current || 60nA ion source current, had to retake || ||
|-
|33 || 1, 2, 3 || 179 || 215 || 80nA || - || - || 8.7 || 100 || 220 || 3 || 0 || CONV full energy, high current || 80nA ion source current, out of sequence, max 45pC per channel || ||
|-
|34 || 1, 2, 3 || 179 || 215 || 40nA || - || - || 8.7 || 50 || 220 || 3 || 0 || CONV full energy, high current || 40nA ion source current || ||
|-
|35 || 1, 2, 3 || 179 || 215 || 20nA || - || - || 8.7 || 50 || 220 || 3 || 0 || CONV full energy, high current || 20nA ion source current || ||
|-
|36 || 1, 2, 3 || 148 || 155 || 300nA || - || - || 10.6 || 350 || 220 || 3 || 0 || CONV full energy, high current || 300nA ion source current || ||
|-
|37 || 1, 2, 3 || 112 || 95 || 300nA || - || - || 13.3 || 350 || 220 || 3 || 0 || CONV full energy, high current || 300nA ion source current || ||
|-
|38 || 1, 2, 3 || 70 || 41 || 300nA || - || - || 16.2 || 350 || 220 || 3 || 0 || CONV full energy, high current || 300nA ion source current || ||
|-
|39 || 1, 2, 3 || Background || || 0 || 0 || 0 || N/A || 350 || 220 || 3 || 0 || Background || Lid closed || ||
|-
|40 || 1, 2, 3 || Background || || 0 || 0 || 0 || N/A || 12.5 || 220 || 3 || 0 || Background || Lid closed || ||
|-
|}
== Measurements 30/09/2025 ==
* Start time 20:05.
* Approximately 160 minutes running 30/09/2025 (20:05&ndash;22:25).
* Peli case set up '''with''' movable stage: ~3mm under front to level case:
** SciFi monitor installed at front of rails.
** Modules 1 and 2 installed behind.
* Isocentre approximately aligned with first SciFi array (level with inner edge of wheel mounts).
* Alignment checked with in room lasers after each adjustment.
* Beam optics '''only''' using CONV mode.
=== General notes about the electronics ===
* Hamamatsu C9118-02 operated in Low Gain
** In low gain the dark output voltage is typ. 0.005 mV, max 0.1 mV
** The saturation output voltage is min. 3 V typ 3.5 V
* MCLK 1 MHz. Suggested min. reset time 10us and suggested min. integration time 17+4x128 clocks = 529 us.
* FPGA high period of RESET clock (reset) = 50 us, low period (integration) 950 us.* Link to the datasheet
https://www.hamamatsu.com/content/dam/hamamatsu-photonics/sites/documents/99_SALES_LIBRARY/ssd/s11865-64_etc_kmpd1134e.pdf
=== SciFi Low Gain Saturation Measurements ===
SciFi in low gain mode.
{| class="wikitable"
{| class="wikitable"
!Run number  
!Run number  
!Detector
!Modules
!Beam Energy (MeV)
!Beam Energy (MeV)
!Estimated Range (mm)
!Estimated Range (mm)
!Current (nominal) (nA)
!Ion Source Current (nA)
!Delivered protons
!Irradiation time
!Spot size (mm, FWHM)
!Spot size (mm, FWHM)
!Translation stage position (mm)
!DDC232 FSR (pC)
!DDC232 FSR (pC)
!DDC232 Integration Time (us)
!DDC232 Integration Time (us)
!Acquisition Time (s)
!Degrader WET (mm)
!Degrader WET (mm)
!Beam setup
!Comments
!Comments
!Photodiode QB Fit
!Photodiode QB Fit
!Replay Fit
!Replay Fit
|-
|-
|n || Full Stack (1-2-3-4)  || Background || - || - || N/A || 350 || 170 (constant)  || ||   || N/A ||  
|1 || 1, 2 || Background || || 0 || 0 || 0 || N/A || 0 || 12.5 || 170 || 5 || 0 || Background || Lid closed, 2 modules installed || ||
|-
|-
|n || Full Stack  || 245 MeV || - || - || N/A || 12.5 || 170 || || || N/A ||  
|2 || 1, 2 || Background || || 0 || 0 || 0 || N/A || 0 || 12.5 || 170 || 5 || 0 || Background || Lid closed, 2 modules installed || ||
|-
|-
|n || Full Stack  || 240 MeV || - || - || N/A || 12.5 || 170 || ||   || N/A ||  
|3 || 1, 2 || Background || || 0 || 0 || 0 || N/A || 0 || 12.5 || 170 || 10 || 0 || Background || Lid open, 2 modules installed || ||
|-
|-
|n || Full Stack  || 230 MeV || - || -|| N/A ||   12.5 || 170 || ||   || N/A ||  
|4 || 1, 2 || Background || || 0 || 0 || 0 || N/A || 0 || 12.5 || 170 || 10 || 0 || Background || Lid open, 2 modules installed || ||
|-
|-
|n || Full Stack || 220 MeV || - || -|| N/A || 12.5 || 170 || || || N/A ||  
|5 || 1, 2 || Background || || 0 || 0 || 0 || N/A || 0 || 12.5 || 170 || 10 || 0 || Background || Lid closed, 2 modules installed || ||
|-
|-
|n || Full Stack  || 210 MeV || - || -|| N/A || 12.5 || 170 || ||   || N/A ||  
|6 || 1, 2 || Background || || 0 || 0 || 0 || N/A || 0 || 350 || 170 || 10 || 0 || Background || Lid open, 2 modules installed || ||
|-
|-
|n || Full Stack  || 200 MeV || - || -|| N/A || 12.5 || 170 || ||   || N/A ||
|7 || 1, 2 || 148 || 155 || 300 || - || - || 10.6 || 0 || 350 || 170 || 10 || 0 || CONV saturation check || Intensity check w/max current, ~100pC max per channel QuARC, SciFi max ~450mV || ||
|-
|-
|n || Full Stack  || 190 MeV || - || - || N/A || 12.5 || 170 || || || N/A ||
|8 || 1, 2 || 148 || 155 || 250 || - || - || 10.6 || 0 || 150 || 170 || 10 || 0 || CONV saturation check || Lowered QuARC FSR to 150pC || ||
|-
|-
|n || Full Stack  || 180 MeV || - || - || N/A ||   12.5 || 170 || ||   || N/A ||  
|9 || 1, 2 || 148 || 155 || 200 || - || - || 10.6 || 0 || 150 || 170 || 10 || 0 || CONV saturation check || Only 54% acquisition, beam dropped out || ||
|-
|-
|n || Full Stack || 170 MeV || - || - || N/A || 12.5 || 170 || || || N/A ||  
|10 || 1, 2 || 148 || 155 || 200 || - || - || 10.6 || 0 || 150 || 170 || 10 || 0 || CONV saturation check || GUI calibration: left side good, right side not working || ||
|-
|-
|n || Full Stack  || 160 MeV || - || - || N/A || 12.5 || 170 || ||   || N/A ||  
|11 || 1, 2 || 148 || 155 || 150 || - || - || 10.6 || 0 || 150 || 170 || 10 || 0 || CONV saturation check || || ||
|-
|-
|n || Full Stack  || 150 MeV || - || - || N/A || 12.5 || 170 || ||   || N/A ||
|12 || 1, 2 || 148 || 155 || 100 || - || - || 10.6 || 0 || 150 || 170 || 10 || 0 || CONV saturation check || || ||
|-
|-
|n || Full Stack  || 140 MeV || - || - || N/A || 12.5 || 170 || || || N/A ||
|13 || 1, 2 || 148 || 155 || 80 || - || - || 10.6 || 0 || 50 || 170 || 10 || 0 || CONV saturation check || Lowered QuARC FSR to 50pC || ||
|-
|-
|n || Full Stack  || 130 MeV || - || - || N/A ||   12.5 || 170 || ||   || N/A ||  
|14 || 1, 2 || 148 || 155 || 60 || - || - || 10.6 || 0 || 50 || 170 || 10 || 0 || CONV saturation check || || ||
|-
|-
|n || Full Stack || 120 MeV || - || - || N/A || 12.5 || 170 || ||  || N/A ||  
|15 || 1, 2 || 148 || 155 || 40 || - || - || 10.6 || 0 || 50 || 170 || 10 || 0 || CONV saturation check ||  || ||
|-
|-
|n || Full Stack  || 110 MeV || - || - || N/A || 12.5 || 170 || ||  || N/A ||  
|16 || 1, 2 || 148 || 155 || 20 || - || - || 10.6 || 0 || 50 || 170 || 10 || 0 || CONV saturation check ||  || ||
|-
|-
|n || Full Stack  || 100 MeV || - || - || N/A || 12.5 || 170 || ||   || N/A ||
|17 || 1, 2 || 148 || 155 || 10 || - || - || 10.6 || 0 || 12.5 || 170 || 10 || 0 || CONV saturation check || Lowest stable ion source current || ||
|-
|-
|n || Full Stack  || 90 MeV || - || - || N/A || 12.5 || 170 || || || N/A ||
|18 || 1, 2 || 148 || 155 || 5 || - || - || 10.6 || 0 || 12.5 || 170 || 10 || 0 || CONV saturation check || Ion source potentially unstable; QuARC max 1.8pC per channel || ||
|-
|-
|n || Full Stack  || 80 MeV || - || - || N/A ||   12.5 || 170 || || || N/A ||  
|19 || 1, 2 || 148 || 155 || 2 || - || - || 10.6 || 0 || 12.5 || 170 || 10 || 0 || CONV saturation check || Ion source failed after ~24% || ||
|-
|-
|n || Full Stack || 70 MeV || - || - || N/A || 12.5 || 170 || ||  || N/A ||  
|20 || 1, 2 || 148 || 155 || 2 || - || - || 10.6 || 0 || 12.5 || 170 || 10 || 0 || CONV saturation check || Repeat at 2nA; potentially 1nA extracted due to ion source instability. SciFi data not recorded. || ||
|-
|-
|n || Full Stack || 70 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|21 || 1, 2 || 148 || 155 || 1 || - || - || 10.6 || 0 || 12.5 || 170 || 10 || 0 || CONV saturation check || Ion source very low extraction. SciFi data not recorded.  || ||
|-
|-
|n || Full Stack  || 80 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|22 || 1, 2 || 148 || 155 || 0.5 || - || - || 10.6 || 0 || 12.5 || 170 || 10 || 0 || QuARC low intensity check || Ion source very low: 1nA with reduced extraction voltage. SciFi data not recorded.  || ||
|-
|-
|n || Full Stack  || 90 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
 
|23 || 1, 2 || 148 || 155 || 300 || - || - || 10.6 || 0 || 150 || 170 || 10 || 0 || Saturation recheck || SciFi data not recorded || ||
|-
|-
|n || Full Stack || 100 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|24 || 1, 2 || 148 || 155 || 150 || - || - || 10.6 || 0 || 100 || 170 || 10 || 0 || Saturation recheck || No SciFi data || ||
|-
|-
|n || Full Stack  || 110 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|25 || 1, 2 || 148 || 155 || 300 || - || - || 10.6 || 0 || 150 || 170 || 10 || 0 || Saturation recheck || SciFi potentially saturating; Pi stopped acquisition at ~79% || ||
|-
|-
|n || Full Stack  || 120 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|26 || 1, 2 || Background || || 0 || 0 || 0 || N/A || 0 || 150 || 170 || 10 || 0 || Background || Comms check || ||
|-
|-
|n || Full Stack || 130 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|27 || 1, 2 || 148 || 155 || 150 || - || - || 10.6 || 0 || 100 || 170 || 10 || 0 || Saturation recheck || Repeat to check saturation || ||
|-
|-
|n || Full Stack  || 140 MeV || - || - || N/A || t.b.d. || 170 ||  || FLASH || N/A ||
|}
 
=== Beam Position Measurements ===
 
Horizontal translation of moving stage to assess beam position response.
 
{| class="wikitable"
!Run number
!Modules
!Beam Energy (MeV)
!Estimated Range (mm)
!Ion Source Current (nA)
!Delivered protons
!Irradiation time
!Spot size (mm, FWHM)
!Translation stage position (mm)
!DDC232 FSR (pC)
!DDC232 Integration Time (us)
!Acquisition Time (s)
!Degrader WET (mm)
!Beam setup
!Comments
!Photodiode QB Fit
!Replay Fit
|-
|-
|n || Full Stack  || 150 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|28 || 1, 2 || 148 || 155 || 300 || - || - || 10.6 || 0 || 150 || 170 || 10 || 0 || CONV position check || Maximum SciFi intensity ~900mV || ||
|-
|-
|n || Full Stack || 160 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|29 || 1, 2 || 148 || 155 || 300 || - || - || 10.6 || 5 || 150 || 170 || 10 || 0 || CONV position check || Case moved 5mm left: beam spot 5mm right || ||
|-
|-
|n || Full Stack  || 170 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|30 || 1, 2 || 148 || 155 || 300 || - || - || 10.6 || 10 || 150 || 170 || 10 || 0 || CONV position check || Trento beam data in same file as +5mm || ||
|-
|-
|n || Full Stack  || 180 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|31 || 1, 2 || 148 || 155 || 300 || - || - || 10.6 || 15 || 150 || 170 || 10 || 0 || CONV position check || || ||
|-
|-
|n || Full Stack || 190 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|32 || 1, 2 || 148 || 155 || 300 || - || - || 10.6 || 20 || 150 || 170 || 10 || 0 || CONV position check || Beam request failed first time; data retaken || ||
|-
|-
|n || Full Stack  || 200 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|33 || 1, 2 || 148 || 155 || 300 || - || - || 10.6 || 0 || 150 || 170 || 10 || 0 || CONV position check || Return to central position || ||
|-
|-
|n || Full Stack  || 210 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|34 || 1, 2 || 148 || 155 || 300 || - || - || 10.6 || -5 || 150 || 170 || 10 || 0 || CONV position check || Case moved 5mm right: beam spot 5mm left || ||
|-
|-
|n || Full Stack  || 220 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|35 || 1, 2 || 148 || 155 || 300 || - || - || 10.6 || -10 || 150 || 170 || 10 || 0 || CONV position check || || ||
|-
|-
|n || Full Stack  || 230 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|36 || 1, 2 || 148 || 155 || 300 || - || - || 10.6 || -15 || 150 || 170 || 10 || 0 || CONV position check || || ||
|-
|-
|n || Full Stack  || 240 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|37 || 1, 2 || 148 || 155 || 300 || - || - || 10.6 || -20 || 150 || 170 || 10 || 0 || CONV position check || || ||
|-
|-
|n || Full Stack  || 245 MeV || - || - || N/A || t.b.d. || 170 || || FLASH || N/A ||  
|38 || 1, 2 || 148 || 155 || 300 || - || - || 10.6 || 0 || 150 || 170 || 10 || 0 || CONV position check || Return to neutral position || ||
|-
|-
|n || Full Stack  || Background || || -  || - || || 170 || || || N/A ||  
|39 || 1, 2 || Background || || 0 || 0 || 0 || N/A || 0 || 150 || 170 || 10 || 0 || Background || Lid closed. Final low gain measurement for SciFi || ||
|-
|-
|}
|}


=== Spot scanning Measurements ===
=== Spot Size Variation Measurements ===
 
{| class="wikitable"
{| class="wikitable"
!Run number  
!Run number  
!Detector
!Modules
!Beam Energy (MeV)
!Beam Energy (MeV)
!Estimated Range (mm)
!Estimated Range (mm)
!Current (nominal) (nA)
!Ion Source Current (nA)
!Delivered protons
!Irradiation time
!Spot size (mm, FWHM)
!Spot size (mm, FWHM)
!Translation stage position (mm)
!DDC232 FSR (pC)
!DDC232 FSR (pC)
!DDC232 Integration Time (us)
!DDC232 Integration Time (us)
!Acquisition Time (s)
!Degrader WET (mm)
!Degrader WET (mm)
!Beam setup
!Comments
!Comments
!Photodiode QB Fit
!Photodiode QB Fit
!Replay Fit
!Replay Fit
|-
|-
|n || Full Stack  || 245 MeV || - || - || N/A || 12.5 || 170 || || top || N/A ||  
|40 || 1, 2 || Background || || 0 || 0 || 0 || N/A || 0 || 150 || 170 || 10 || 0 || Background || Lid closed, high gain background check || ||
|-
|41 || 1, 2 || 148 || 155 || 300 || - || - || 10.6 || 0 || 150 || 170 || 10 || 0 || High gain saturation check || SciFi max voltage ~1.6V || ||
|-
|42 || 1, 2 || 228 || 325 || 300 || - || - || 6.8 || 0 || 150 || 170 || 10 || 0 || Spot size variation || Pi connection lost; SciFi saturating || ||
|-
|}
 
== Measurements 01/10/2025 ==
 
* Start time 20:23.
* Approximately 125 minutes running 30/09/2025 (20:23&ndash;22:30).
* Peli case set up '''without''' movable stage.
* QuARC modules removed: SciFi monitor only installed at front of rails.
* Isocentre approximately aligned with first SciFi array (level with inner edge of wheel mounts).
* Alignment checked with in room lasers after each adjustment.
* Beam optics '''only''' using CONV mode.
* '''No QuARC data recorded'''.
* '''Cover plates accidentally left on for all measurements except last 2 with film'''.
* Derig completed 23:00.
 
=== High Gain Saturation Measurements ===
 
* Saturation measurements with SciFi high gain setting.
* '''Cover plates accidentally left on for all measurements except last 2 with film'''.
 
{| class="wikitable"
!Run number
!Modules
!Beam Energy (MeV)
!Estimated Range (mm)
!Ion Source Current (nA)
!Delivered protons
!Irradiation time
!Spot size (mm, FWHM)
!Acquisition Time (s)
!Degrader WET (mm)
!Beam setup
!Comments
|-
|1 || SciFi Only || Background || || 0 || 0 || 0 || N/A || 10 || 0 || Background || Lid closed, high gain background check
|-
|2 || SciFi Only || 148 || 155 || 300 || - || - || 10.6 || 10 || 0 || High gain saturation check || SciFi max voltage ~1.5V
|-
|3 || SciFi Only || 148 || 155 || 250 || - || - || 10.6 || 10 || 0 || High gain saturation check || Had to repeat run; SciFi max voltage ~1.4V
|-
|4 || SciFi Only || 148 || 155 || 200 || - || - || 10.6 || 10 || 0 || High gain saturation check || SciFi max voltage ~1.1V
|-
|5 || SciFi Only || 148 || 155 || 150 || - || - || 10.6 || 10 || 0 || High gain saturation check || SciFi max voltage ~950mV
|-
|6 || SciFi Only || 148 || 155 || 100 || - || - || 10.6 || 10 || 0 || High gain saturation check || SciFi max voltage ~850mV
|-
|7 || SciFi Only || 148 || 155 || 80 || - || - || 10.6 || 10 || 0 || High gain saturation check || SciFi max voltage ~750mV
|-
|8 || SciFi Only || 148 || 155 || 60 || - || - || 10.6 || 10 || 0 || High gain saturation check || SciFi max voltage ~700mV
|-
|9 || SciFi Only || 148 || 155 || 40 || - || - || 10.6 || 10 || 0 || High gain saturation check || SciFi max voltage ~650mV
|-
|10 || SciFi Only || 148 || 155 || 20 || - || - || 10.6 || 10 || 0 || High gain saturation check || SciFi max voltage ~580mV
|-
|11 || SciFi Only || 148 || 155 || 10 || - || - || 10.6 || 10 || 0 || High gain saturation check || SciFi max voltage ~540mV
|-
|12 || SciFi Only || 148 || 155 || 5 || - || - || 10.6 || 10 || 0 || High gain saturation check || SciFi max voltage ~530mV
|-
|13 || SciFi Only || 148 || 155 || 3 || - || - || 10.6 || 10 || 0 || High gain saturation check || SciFi max voltage ~520mV
|-
|14 || SciFi Only || 148 || 155 || 2 || - || - || 10.6 || 10 || 0 || High gain saturation check || SciFi max voltage ~530mV
|-
|15 || SciFi Only || 148 || 155 || 1 || - || - || 10.6 || 10 || 0 || High gain saturation check || SciFi max voltage ~540mV
|-
|16 || SciFi Only || 148 || 155 || 0.5 || - || - || 10.6 || 10 || 0 || High gain saturation check || SciFi max voltage ~530mV
|-
|17 || SciFi Only || 148 || 155 || 0.2 || - || - || 10.6 || 10 || 0 || High gain saturation check || Lowest possible ion source current: very unstable; SciFi max voltage ~519mV
|-
|18 || SciFi Only || 228 || 325 || 0.5 || - || - || 6.8 || 10 || 0 || High gain saturation check || SciFi max voltage ~560mV
|-
|19 || SciFi Only || 228 || 325 || 1 || - || - || 6.8 || 10 || 0 || High gain saturation check || SciFi max voltage ~570mV
|-
|20 || SciFi Only || 228 || 325 || 2 || - || - || 6.8 || 10 || 0 || High gain saturation check || SciFi max voltage ~625mV
|-
|21 || SciFi Only || 228 || 325 || 3 || - || - || 6.8 || 10 || 0 || High gain saturation check || SciFi max voltage ~650mV
|-
|22 || SciFi Only || 228 || 325 || 5 || - || - || 6.8 || 10 || 0 || High gain saturation check || SciFi max voltage ~675mV
|-
|23 || SciFi Only || 228 || 325 || 10 || - || - || 6.8 || 10 || 0 || High gain saturation check || SciFi max voltage ~820mV
|-
|24 || SciFi Only || 228 || 325 || 20 || - || - || 6.8 || 10 || 0 || High gain saturation check || SciFi max voltage ~1.05V
|-
|25 || SciFi Only || 228 || 325 || 40 || - || - || 6.8 || 10 || 0 || High gain saturation check || SciFi max voltage ~1.5V
|-
|26 || SciFi Only || 228 || 325 || 60 || - || - || 6.8 || 10 || 0 || High gain saturation check || SciFi max voltage ~1.8V
|-
|27 || SciFi Only || 228 || 325 || 80 || - || - || 6.8 || 10 || 0 || High gain saturation check || SciFi max voltage ~2.3V
|-
|28 || SciFi Only || 228 || 325 || 100 || - || - || 6.8 || 10 || 0 || High gain saturation check || SciFi max voltage ~3V with clear saturation
|-
|29 || SciFi Only || 228 || 325 || 150 || - || - || 6.8 || 10 || 0 || High gain saturation check || SciFi max voltage ~3V with clear saturation
|-
|}
 
=== Spot Size Variation Measurements ===
 
* Keep high gain setting.
* Spot size variation from 70MeV with 300nA ion source current.
* Ascertain optimal current at 228MeV to be just below saturation.
* '''Cover plates accidentally left on for all measurements except last 2 with film'''.
 
{| class="wikitable"
!Run number
!Modules
!Beam Energy (MeV)
!Estimated Range (mm)
!Ion Source Current (nA)
!Delivered protons
!Irradiation time
!Spot size (mm, FWHM)
!Acquisition Time (s)
!Degrader WET (mm)
!Beam setup
!Comments
|-
|30 || SciFi Only || Background || || 0 || 0 || 0 || N/A || 10 || 0 || Background || Lid closed, high gain background check
|-
|31 || SciFi Only || 70 || 41 || 300 || - || - || 16.2 || 10 || 0 || Spot size variation || SciFi max voltage ~675mV
|-
|32 || SciFi Only || 112 || 95 || 50 || - || - || 13 || 10 || 0 || Spot size variation || SciFi max voltage ~620mV
|-
|33 || SciFi Only || 112 || 95 || 100 || - || - || 13 || 10 || 0 || Spot size variation || SciFi max voltage ~700mV
|-
|34 || SciFi Only || 112 || 95 || 300 || - || - || 13 || 10 || 0 || Spot size variation || SciFi max voltage ~980mV
|-
|35 || SciFi Only || 148 || 155 || 40 || - || - || 10.6 || 10 || 0 || Spot size variation || SciFi max voltage ~650V
|-
|36 || SciFi Only || 148 || 155 || 50 || - || - || 10.6 || 10 || 0 || Spot size variation || SciFi max voltage ~715mV
|-
|37 || SciFi Only || 179 || 215 || 10 || - || - || 8.7 || 10 || 0 || Spot size variation || SciFi max voltage ~620mV
|-
|38 || SciFi Only || 179 || 215 || 20 || - || - || 8.7 || 10 || 0 || Spot size variation || SciFi max voltage ~690mV
|-
|39 || SciFi Only || 228 || 325 || 5 || - || - || 6.8 || 10 || 0 || Spot size variation || SciFi max voltage ~590mV 
|-
|40 || SciFi Only || 228 || 325 || 10 || - || - || 6.8 || 10 || 0 || Spot size variation || SciFi max voltage ~770mV 
|-
|41 || SciFi Only || 228 || 325 || 7 || - || - || 6.8 || 10 || 0 || Spot size variation || SciFi max voltage ~680mV
|-
|42 || SciFi Only || 228 || 325 || 50 || - || - || 6.8 || 10 || 0 || High gain intensity check || SciFi max voltage ~1.7V
|-
|43 || SciFi Only || 228 || 325 || 55 || - || - || 6.8 || 10 || 0 || High gain intensity check || SciFi max voltage ~1.75V
|-
|44 || SciFi Only || 228 || 325 || 60 || - || - || 6.8 || 10 || 0 || High gain intensity check || SciFi max voltage ~1.92V
|-
|45 || SciFi Only || 228 || 325 || 65 || - || - || 6.8 || 10 || 0 || High gain intensity check || SciFi max voltage ~2.2V
|-
|46 || SciFi Only || 228 || 325 || 70 || - || - || 6.8 || 10 || 0 || High gain intensity check || SciFi max voltage ~2.5V
|-
|47 || SciFi Only || 228 || 325 || 75 || - || - || 6.8 || 10 || 0 || High gain intensity check || SciFi max voltage ~2.7V
|-
|48 || SciFi Only || 228 || 325 || 80 || - || - || 6.8 || 10 || 0 || High gain intensity check || SciFi max voltage ~2.8V
|-
|-
|n || Full Stack  || 245 MeV || - || - || N/A || 12.5 || 170 || || bottom  || N/A ||  
|49 || SciFi Only || 228 || 325 || 85 || - || - || 6.8 || 10 || 0 || High gain intensity check || SciFi max voltage ~2.9V
|-
|-
|n || Full Stack  || 245 MeV || - || -|| N/A ||   12.5 || 170 || || left || N/A ||  
|50 || SciFi Only || 228 || 325 || 90 || - || - || 6.8 || 10 || 0 || High gain intensity check || SciFi max voltage ~3V probably saturated
|-
|-
|n || Full Stack || 245 MeV || - || -|| N/A || 12.5 || 170 || || right || N/A ||  
|51 || SciFi Only || 228 || 325 || 95 || - || - || 6.8 || 10 || 0 || High gain intensity check || SciFi max voltage ~3V probably saturated
|-
|-
|n || Full Stack  || 150 MeV || - || -|| N/A || 12.5 || 170 || || top || N/A ||  
|52 || SciFi Only || 228 || 325 || 100 || - || - || 6.8 || 10 || 0 || High gain intensity check || SciFi max voltage ~3V probably saturated
|-
|-
|n || Full Stack  || 150 MeV || - || -|| N/A || 12.5 || 170 || || bottom  || N/A ||
|53 || SciFi Only || 148 || 155 || 10 || - || - || 6.8 || 10 || 0 || High gain intensity check || Beam spot size film check: '''cover plates removed'''
|-
|-
|n || Full Stack  || 150 MeV || - || - || N/A || 12.5 || 170 || || left || N/A ||
|54 || SciFi Only || Background || || 0 || 0 || 0 || N/A || 10 || 0 || Background || Lid closed, high gain background check
|-
|-
|n || Full Stack  || 150 MeV || - || - || N/A ||   12.5 || 170 ||  || right  || N/A ||  
|55 || SciFi Only || 228 || 325 || 7 || - || - || 6.8 || 5 || 0 || High gain intensity check || Beam spot size film check: '''cover plates removed'''
|-
|-
|}
|}

Latest revision as of 21:13, 1 October 2025

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 29/09/2025

  • 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.

Calibration conventional and FLASH

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
17 2 228 325 1 - - 6.8 12.5 170 5 50 Shoot through front
18 2 228 325 1 - - 6.8 12.5 170 5 50 Shoot through back Rotated and reinstalled stack
19 3 Background N/A 0 0 0 N/A 12.5 170 5 50 Background Lid closed, module 3 installed
20 3 228 325 1 - - 6.8 12.5 170 5 50 Shoot through front
21 3 228 325 1 - - 6.8 12.5 170 5 50 Shoot through back Rotated and reinstalled stack

Bragg Peak Measurements

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
22 1, 2, 3 Background 0 0 0 N/A 12.5 220 5 0 Background Lid open, 3 modules installed
23 1, 2, 3 Background 0 0 0 N/A 12.5 220 5 0 Background Lid closed, 3 modules installed
24 1, 2, 3 179 215 1 1.3E11 20 8.7 12.5 220 5 0 CONV full energy 4 photodiodes saturating: drop next current in half, 1.3E11 in 20s
25 1, 2, 3 179 215 15nA - - 8.7 12.5 220 5 0 CONV full energy 15nA ion source current, ~1nA isocentre
26 1, 2, 3 179 215 300nA - - 8.7 350 220 3 0 CONV full energy, high current 300nA ion source current, ~10nA isocentre
27 1, 2, 3 179 215 250nA - - 8.7 350 220 3 0 CONV full energy, high current 250nA ion source current, ~8.3nA isocentre
28 1, 2, 3 179 215 200nA - - 8.7 350 220 3 0 CONV full energy, high current 200nA ion source current, ~6.7nA isocentre
29 1, 2, 3 179 215 150nA - - 8.7 350 220 3 0 CONV full energy, high current 150nA ion source current, ~5nA isocentre
30 1, 2, 3 179 215 100nA - - 8.7 350 220 3 0 CONV full energy, high current 100nA ion source current, ~3.3nA isocentre
31 1, 2, 3 Background 0 0 0 N/A 350 220 3 0 Background
32 1, 2, 3 179 215 60nA - - 8.7 50 220 3 0 CONV full energy, high current 60nA ion source current, had to retake
33 1, 2, 3 179 215 80nA - - 8.7 100 220 3 0 CONV full energy, high current 80nA ion source current, out of sequence, max 45pC per channel
34 1, 2, 3 179 215 40nA - - 8.7 50 220 3 0 CONV full energy, high current 40nA ion source current
35 1, 2, 3 179 215 20nA - - 8.7 50 220 3 0 CONV full energy, high current 20nA ion source current
36 1, 2, 3 148 155 300nA - - 10.6 350 220 3 0 CONV full energy, high current 300nA ion source current
37 1, 2, 3 112 95 300nA - - 13.3 350 220 3 0 CONV full energy, high current 300nA ion source current
38 1, 2, 3 70 41 300nA - - 16.2 350 220 3 0 CONV full energy, high current 300nA ion source current
39 1, 2, 3 Background 0 0 0 N/A 350 220 3 0 Background Lid closed
40 1, 2, 3 Background 0 0 0 N/A 12.5 220 3 0 Background Lid closed

Measurements 30/09/2025

  • Start time 20:05.
  • Approximately 160 minutes running 30/09/2025 (20:05–22:25).
  • Peli case set up with movable stage: ~3mm under front to level case:
    • SciFi monitor installed at front of rails.
    • Modules 1 and 2 installed behind.
  • Isocentre approximately aligned with first SciFi array (level with inner edge of wheel mounts).
  • Alignment checked with in room lasers after each adjustment.
  • Beam optics only using CONV mode.

General notes about the electronics

  • Hamamatsu C9118-02 operated in Low Gain
    • In low gain the dark output voltage is typ. 0.005 mV, max 0.1 mV
    • The saturation output voltage is min. 3 V typ 3.5 V
  • MCLK 1 MHz. Suggested min. reset time 10us and suggested min. integration time 17+4x128 clocks = 529 us.
  • FPGA high period of RESET clock (reset) = 50 us, low period (integration) 950 us.* Link to the datasheet

https://www.hamamatsu.com/content/dam/hamamatsu-photonics/sites/documents/99_SALES_LIBRARY/ssd/s11865-64_etc_kmpd1134e.pdf

SciFi Low Gain Saturation Measurements

SciFi in low gain mode.

Run number Modules Beam Energy (MeV) Estimated Range (mm) Ion Source Current (nA) Delivered protons Irradiation time Spot size (mm, FWHM) Translation stage position (mm) DDC232 FSR (pC) DDC232 Integration Time (us) Acquisition Time (s) Degrader WET (mm) Beam setup Comments Photodiode QB Fit Replay Fit
1 1, 2 Background 0 0 0 N/A 0 12.5 170 5 0 Background Lid closed, 2 modules installed
2 1, 2 Background 0 0 0 N/A 0 12.5 170 5 0 Background Lid closed, 2 modules installed
3 1, 2 Background 0 0 0 N/A 0 12.5 170 10 0 Background Lid open, 2 modules installed
4 1, 2 Background 0 0 0 N/A 0 12.5 170 10 0 Background Lid open, 2 modules installed
5 1, 2 Background 0 0 0 N/A 0 12.5 170 10 0 Background Lid closed, 2 modules installed
6 1, 2 Background 0 0 0 N/A 0 350 170 10 0 Background Lid open, 2 modules installed
7 1, 2 148 155 300 - - 10.6 0 350 170 10 0 CONV saturation check Intensity check w/max current, ~100pC max per channel QuARC, SciFi max ~450mV
8 1, 2 148 155 250 - - 10.6 0 150 170 10 0 CONV saturation check Lowered QuARC FSR to 150pC
9 1, 2 148 155 200 - - 10.6 0 150 170 10 0 CONV saturation check Only 54% acquisition, beam dropped out
10 1, 2 148 155 200 - - 10.6 0 150 170 10 0 CONV saturation check GUI calibration: left side good, right side not working
11 1, 2 148 155 150 - - 10.6 0 150 170 10 0 CONV saturation check
12 1, 2 148 155 100 - - 10.6 0 150 170 10 0 CONV saturation check
13 1, 2 148 155 80 - - 10.6 0 50 170 10 0 CONV saturation check Lowered QuARC FSR to 50pC
14 1, 2 148 155 60 - - 10.6 0 50 170 10 0 CONV saturation check
15 1, 2 148 155 40 - - 10.6 0 50 170 10 0 CONV saturation check
16 1, 2 148 155 20 - - 10.6 0 50 170 10 0 CONV saturation check
17 1, 2 148 155 10 - - 10.6 0 12.5 170 10 0 CONV saturation check Lowest stable ion source current
18 1, 2 148 155 5 - - 10.6 0 12.5 170 10 0 CONV saturation check Ion source potentially unstable; QuARC max 1.8pC per channel
19 1, 2 148 155 2 - - 10.6 0 12.5 170 10 0 CONV saturation check Ion source failed after ~24%
20 1, 2 148 155 2 - - 10.6 0 12.5 170 10 0 CONV saturation check Repeat at 2nA; potentially 1nA extracted due to ion source instability. SciFi data not recorded.
21 1, 2 148 155 1 - - 10.6 0 12.5 170 10 0 CONV saturation check Ion source very low extraction. SciFi data not recorded.
22 1, 2 148 155 0.5 - - 10.6 0 12.5 170 10 0 QuARC low intensity check Ion source very low: 1nA with reduced extraction voltage. SciFi data not recorded.
23 1, 2 148 155 300 - - 10.6 0 150 170 10 0 Saturation recheck SciFi data not recorded
24 1, 2 148 155 150 - - 10.6 0 100 170 10 0 Saturation recheck No SciFi data
25 1, 2 148 155 300 - - 10.6 0 150 170 10 0 Saturation recheck SciFi potentially saturating; Pi stopped acquisition at ~79%
26 1, 2 Background 0 0 0 N/A 0 150 170 10 0 Background Comms check
27 1, 2 148 155 150 - - 10.6 0 100 170 10 0 Saturation recheck Repeat to check saturation

Beam Position Measurements

Horizontal translation of moving stage to assess beam position response.

Run number Modules Beam Energy (MeV) Estimated Range (mm) Ion Source Current (nA) Delivered protons Irradiation time Spot size (mm, FWHM) Translation stage position (mm) DDC232 FSR (pC) DDC232 Integration Time (us) Acquisition Time (s) Degrader WET (mm) Beam setup Comments Photodiode QB Fit Replay Fit
28 1, 2 148 155 300 - - 10.6 0 150 170 10 0 CONV position check Maximum SciFi intensity ~900mV
29 1, 2 148 155 300 - - 10.6 5 150 170 10 0 CONV position check Case moved 5mm left: beam spot 5mm right
30 1, 2 148 155 300 - - 10.6 10 150 170 10 0 CONV position check Trento beam data in same file as +5mm
31 1, 2 148 155 300 - - 10.6 15 150 170 10 0 CONV position check
32 1, 2 148 155 300 - - 10.6 20 150 170 10 0 CONV position check Beam request failed first time; data retaken
33 1, 2 148 155 300 - - 10.6 0 150 170 10 0 CONV position check Return to central position
34 1, 2 148 155 300 - - 10.6 -5 150 170 10 0 CONV position check Case moved 5mm right: beam spot 5mm left
35 1, 2 148 155 300 - - 10.6 -10 150 170 10 0 CONV position check
36 1, 2 148 155 300 - - 10.6 -15 150 170 10 0 CONV position check
37 1, 2 148 155 300 - - 10.6 -20 150 170 10 0 CONV position check
38 1, 2 148 155 300 - - 10.6 0 150 170 10 0 CONV position check Return to neutral position
39 1, 2 Background 0 0 0 N/A 0 150 170 10 0 Background Lid closed. Final low gain measurement for SciFi

Spot Size Variation Measurements

Run number Modules Beam Energy (MeV) Estimated Range (mm) Ion Source Current (nA) Delivered protons Irradiation time Spot size (mm, FWHM) Translation stage position (mm) DDC232 FSR (pC) DDC232 Integration Time (us) Acquisition Time (s) Degrader WET (mm) Beam setup Comments Photodiode QB Fit Replay Fit
40 1, 2 Background 0 0 0 N/A 0 150 170 10 0 Background Lid closed, high gain background check
41 1, 2 148 155 300 - - 10.6 0 150 170 10 0 High gain saturation check SciFi max voltage ~1.6V
42 1, 2 228 325 300 - - 6.8 0 150 170 10 0 Spot size variation Pi connection lost; SciFi saturating

Measurements 01/10/2025

  • Start time 20:23.
  • Approximately 125 minutes running 30/09/2025 (20:23–22:30).
  • Peli case set up without movable stage.
  • QuARC modules removed: SciFi monitor only installed at front of rails.
  • Isocentre approximately aligned with first SciFi array (level with inner edge of wheel mounts).
  • Alignment checked with in room lasers after each adjustment.
  • Beam optics only using CONV mode.
  • No QuARC data recorded.
  • Cover plates accidentally left on for all measurements except last 2 with film.
  • Derig completed 23:00.

High Gain Saturation Measurements

  • Saturation measurements with SciFi high gain setting.
  • Cover plates accidentally left on for all measurements except last 2 with film.
Run number Modules Beam Energy (MeV) Estimated Range (mm) Ion Source Current (nA) Delivered protons Irradiation time Spot size (mm, FWHM) Acquisition Time (s) Degrader WET (mm) Beam setup Comments
1 SciFi Only Background 0 0 0 N/A 10 0 Background Lid closed, high gain background check
2 SciFi Only 148 155 300 - - 10.6 10 0 High gain saturation check SciFi max voltage ~1.5V
3 SciFi Only 148 155 250 - - 10.6 10 0 High gain saturation check Had to repeat run; SciFi max voltage ~1.4V
4 SciFi Only 148 155 200 - - 10.6 10 0 High gain saturation check SciFi max voltage ~1.1V
5 SciFi Only 148 155 150 - - 10.6 10 0 High gain saturation check SciFi max voltage ~950mV
6 SciFi Only 148 155 100 - - 10.6 10 0 High gain saturation check SciFi max voltage ~850mV
7 SciFi Only 148 155 80 - - 10.6 10 0 High gain saturation check SciFi max voltage ~750mV
8 SciFi Only 148 155 60 - - 10.6 10 0 High gain saturation check SciFi max voltage ~700mV
9 SciFi Only 148 155 40 - - 10.6 10 0 High gain saturation check SciFi max voltage ~650mV
10 SciFi Only 148 155 20 - - 10.6 10 0 High gain saturation check SciFi max voltage ~580mV
11 SciFi Only 148 155 10 - - 10.6 10 0 High gain saturation check SciFi max voltage ~540mV
12 SciFi Only 148 155 5 - - 10.6 10 0 High gain saturation check SciFi max voltage ~530mV
13 SciFi Only 148 155 3 - - 10.6 10 0 High gain saturation check SciFi max voltage ~520mV
14 SciFi Only 148 155 2 - - 10.6 10 0 High gain saturation check SciFi max voltage ~530mV
15 SciFi Only 148 155 1 - - 10.6 10 0 High gain saturation check SciFi max voltage ~540mV
16 SciFi Only 148 155 0.5 - - 10.6 10 0 High gain saturation check SciFi max voltage ~530mV
17 SciFi Only 148 155 0.2 - - 10.6 10 0 High gain saturation check Lowest possible ion source current: very unstable; SciFi max voltage ~519mV
18 SciFi Only 228 325 0.5 - - 6.8 10 0 High gain saturation check SciFi max voltage ~560mV
19 SciFi Only 228 325 1 - - 6.8 10 0 High gain saturation check SciFi max voltage ~570mV
20 SciFi Only 228 325 2 - - 6.8 10 0 High gain saturation check SciFi max voltage ~625mV
21 SciFi Only 228 325 3 - - 6.8 10 0 High gain saturation check SciFi max voltage ~650mV
22 SciFi Only 228 325 5 - - 6.8 10 0 High gain saturation check SciFi max voltage ~675mV
23 SciFi Only 228 325 10 - - 6.8 10 0 High gain saturation check SciFi max voltage ~820mV
24 SciFi Only 228 325 20 - - 6.8 10 0 High gain saturation check SciFi max voltage ~1.05V
25 SciFi Only 228 325 40 - - 6.8 10 0 High gain saturation check SciFi max voltage ~1.5V
26 SciFi Only 228 325 60 - - 6.8 10 0 High gain saturation check SciFi max voltage ~1.8V
27 SciFi Only 228 325 80 - - 6.8 10 0 High gain saturation check SciFi max voltage ~2.3V
28 SciFi Only 228 325 100 - - 6.8 10 0 High gain saturation check SciFi max voltage ~3V with clear saturation
29 SciFi Only 228 325 150 - - 6.8 10 0 High gain saturation check SciFi max voltage ~3V with clear saturation

Spot Size Variation Measurements

  • Keep high gain setting.
  • Spot size variation from 70MeV with 300nA ion source current.
  • Ascertain optimal current at 228MeV to be just below saturation.
  • Cover plates accidentally left on for all measurements except last 2 with film.
Run number Modules Beam Energy (MeV) Estimated Range (mm) Ion Source Current (nA) Delivered protons Irradiation time Spot size (mm, FWHM) Acquisition Time (s) Degrader WET (mm) Beam setup Comments
30 SciFi Only Background 0 0 0 N/A 10 0 Background Lid closed, high gain background check
31 SciFi Only 70 41 300 - - 16.2 10 0 Spot size variation SciFi max voltage ~675mV
32 SciFi Only 112 95 50 - - 13 10 0 Spot size variation SciFi max voltage ~620mV
33 SciFi Only 112 95 100 - - 13 10 0 Spot size variation SciFi max voltage ~700mV
34 SciFi Only 112 95 300 - - 13 10 0 Spot size variation SciFi max voltage ~980mV
35 SciFi Only 148 155 40 - - 10.6 10 0 Spot size variation SciFi max voltage ~650V
36 SciFi Only 148 155 50 - - 10.6 10 0 Spot size variation SciFi max voltage ~715mV
37 SciFi Only 179 215 10 - - 8.7 10 0 Spot size variation SciFi max voltage ~620mV
38 SciFi Only 179 215 20 - - 8.7 10 0 Spot size variation SciFi max voltage ~690mV
39 SciFi Only 228 325 5 - - 6.8 10 0 Spot size variation SciFi max voltage ~590mV
40 SciFi Only 228 325 10 - - 6.8 10 0 Spot size variation SciFi max voltage ~770mV
41 SciFi Only 228 325 7 - - 6.8 10 0 Spot size variation SciFi max voltage ~680mV
42 SciFi Only 228 325 50 - - 6.8 10 0 High gain intensity check SciFi max voltage ~1.7V
43 SciFi Only 228 325 55 - - 6.8 10 0 High gain intensity check SciFi max voltage ~1.75V
44 SciFi Only 228 325 60 - - 6.8 10 0 High gain intensity check SciFi max voltage ~1.92V
45 SciFi Only 228 325 65 - - 6.8 10 0 High gain intensity check SciFi max voltage ~2.2V
46 SciFi Only 228 325 70 - - 6.8 10 0 High gain intensity check SciFi max voltage ~2.5V
47 SciFi Only 228 325 75 - - 6.8 10 0 High gain intensity check SciFi max voltage ~2.7V
48 SciFi Only 228 325 80 - - 6.8 10 0 High gain intensity check SciFi max voltage ~2.8V
49 SciFi Only 228 325 85 - - 6.8 10 0 High gain intensity check SciFi max voltage ~2.9V
50 SciFi Only 228 325 90 - - 6.8 10 0 High gain intensity check SciFi max voltage ~3V probably saturated
51 SciFi Only 228 325 95 - - 6.8 10 0 High gain intensity check SciFi max voltage ~3V probably saturated
52 SciFi Only 228 325 100 - - 6.8 10 0 High gain intensity check SciFi max voltage ~3V probably saturated
53 SciFi Only 148 155 10 - - 6.8 10 0 High gain intensity check Beam spot size film check: cover plates removed
54 SciFi Only Background 0 0 0 N/A 10 0 Background Lid closed, high gain background check
55 SciFi Only 228 325 7 - - 6.8 5 0 High gain intensity check Beam spot size film check: cover plates removed
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