Proton Calorimetry/Meetings

Proton Calorimetry Meeting Minutes.

Minutes for UCL Proton Beam Therapy Group Meetings, 24th July

Present

Joe Bateman, Simon Jolly, Sonia Escribano, Febian

Simon Jolly

• Sonia, Joe and Simon to visit to Maastricht Proton Therapy Centre on 13th and 14th August.

Febian

• Working on first FPGA tasks
• Contact Matt to check things such as generating clock signals etc.
• No more CDT projects until industrial placement - ideally sooner rather than later e.g. Jan

Joe Bateman

• Successfully ran first Geant4 B1 basic example (from https://ep-dep-sft.web.cern.ch/geant4-usage-cern) over HEP cluster using CVFMS Geant4 11.2 gcc-10 installation.
• Next step to look at visualisation - i.e. what packages need to be sourced/installed.

Sonia Escribano

• Run59 and Run60 5x5 box field 5 Gy from UCLH Beam Test
  • Strange response beyond distal edge of Bragg peak - potentially due to calibration or other issue
  • Ratio between photodiode response for run 59 and 60 constant for most photodiodes except between ~150 and 168 mm
    • acquisition on run starting too late and snipped energy layer at the start
  • with have better data would be interesting to produce time integrated measurements of calibrated measurements to compare to beam current
  • Within each group - integrated depth light output should be the same between each run - way to check photodiode reproducibility between run 59 and 60 since same beam parameters delivered
  • Check dicom to check number of energy layers

• GUI improvements
  • Beam energy and range buttons on visible when fit gives good results
  • Can run without specifying number of measurements - set a default of 1.5 mins
  • No longer showing graph from prev. Measurements when press graph if not connected
  • How to stop replay GUI - will discuss with Simon