Proton Calorimetry/Meetings/2020/04/22

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


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
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