Proton Calorimetry/Meetings/2022/09/07

Minutes for UCL Proton Calorimetry Meetings, 7th September

Saad Shaikh, Sonia Escribano, Simon Jolly

Assembled prototypes and performed beam test at UCLH on September 1st. Discussed results in this presentation:
- RSP appears to be closer to 1.034 than previously assumed 1.024. Results are better but there is scope for more investigation with future rev. D prototypes.
- New sanded sheets from NUVIA have lower light levels and give worse data – Simon to inquire about future sets of sheets.
Geant4 simulation work:
- Found that fixing Birks' constant improved fit with simulated PDL curves – went back to Laurent's simulated data and found that fits fail unless Birks' constant is fixed.
- Preliminary tests of binned fitting rate using simulated data: 3.55 Hz with 10 data points; 2.70 Hz with 36 data points and 0.64 Hz with 128 data points.
- Next step is to check photon propagation to edges of scintillator and investigate stepping observed with high resolution PDD.
Set up template for research paper on Overleaf using Quenched Bragg paper.
Matt Warren has fixed USB104 DAQ problems, will acquire code and implement his changes.
- Will also test set up with USB104 and GUI on Raspberry Pi.