Proton Calorimetry/Meetings/2025/02/18

Minutes for UCL Proton Beam Therapy Group Meetings, 18th February

Present

Joe Bateman, Sonia Escribano, Simon Jolly

Simon Jolly

• Chase up Harry about scintillator sheets
• Chase up Tony about UCLH CMOS data for 3x3 and 5x5 fields
• Electronics will be received by 20/2
• Sonia and Joe to consider options for normalisation of QuARC signal to be in terms of Gy or MU
• Aiming for beam tests - UCLH for week 5/5, Trento for week 12/5

Sonia Escribano

• Average.csv file that writes raw data to decimal format, separated into two for dual readout
• Checked that data and errors from average.csv and average_dual.csv are identical and work on gui
• Will need to generate two calibrated file in real time
  • Need to check reading direction of fpga so knows which way the calibration coefficients need to be applied
• Created separate DAQ_dual and gui that shows both Bragg peaks
• Calibration performed for post processing
  • Need to create two separate files and calibrate independently
  • Currently run split_file.cpp works from terminal and generates two files but files not generated when run from GUI
  • Alternative option to generate two separated files during acquisition directly
• Scintillators should be ready from John and Wayne in 1.5 months ? Will take longest
• Assembly by mid-april?
• Joe chase up photodiodes order
• Matt shall be testing rev e and mod firmware with new electronics next week
• Windows + patch panel will take around a couple of weeks

Joe Bateman

• For QuADProBe reconstruction adjusting energy by constant offset since QuARC seems to be measuring ~5.5 MeV less than DICOM
• For paper reconstructions should run simulations using:
  • All DICOM params
  • All QuADProBe params (1 using CMOS intensity, another using QuARC intensity)
  • QuADProBe params, DICOM intensity
  • Just QuARC energy
• Had call with Sam on Monday to discuss transmission calorimeter data - can try to use it to scale to actual dose, although TC data is in K but has been correlated with prescribed dose
• Attempted to duplicate QuARC G4 simulation in TOPAS but not so successful so will continue using the G4 version