Proton Calorimetry/Meetings/2020/04/22

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

Laurent Kelleter, Saad Shaikh, 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

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.

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