Proton Calorimetry/Meetings/2020/04/22

Minutes for UCL Proton Calorimetry Meetings, 22nd April (Everyone is working from home)

Present

Laurent Kelleter, Saad Shaikh, Raffaella radogna

Raffaella Radogna

• Provided feedbacks to Laurents phd Thesis, from ch 3 to 7
• Readed all the posts in the DDC264EVM forum and DDC1128EVM forum
  • will collect all the usefull posts and settings in a twiki
• Will reply to Marko email about the new board design

Saad Shaikh

• Will be implementing SOBP fitting routines, testing on HIT April ’19 data.
  • Noted that SOBP fitting won’t be perfect, due to narrow readout strip from detector.
  • Implementing further improvements to code, absorbing additional constants of model into TF1 objects to reduce number of interface functions.
• Advice on learning GEANT4 simulation
  • Go through GEANT4 examples to identify different components of a simulation.
  • Should be able to extract and analyse four curves from simulation: PDD, PDL (photons counted at production or counted after propagation to scintillator edge) and histogram of proton stopping depths.
  • Rebuild Laurent’s simulation from ground-up to enable multi-threading and to hopefully fix detector geometry redefinition bug.
  • Long-term investigations of 2D beam size and dose scoring of secondary particles could be interesting.
• Nuclear model implementation to be discussed with Raffy soon.

Laurent Kelleter

• Showed some preliminary results using Oxigen beams
  • the range reconstruction uncertainty is 0.5mm
  • Birk's constant results are much different from proton results. This will need further optimisation. The Oxigen peak is too sharp to be fully resolved with 3mm scintillator sheets.
• Is writing his PhD thesis
• Will reply to the QuARC paper review this week