Proton Calorimetry/Meetings/2020/02/17

Minutes for UCL Proton Calorimetry Meetings, 17th February (D17, Physics & Astronomy, UCL)

Simon Jolly, Laurent Kelleter, Saad Shaikh, Raffaella radogna

he is able to fit real data using Laurent's code
- all of the steps are included, quenched bragg fit and reconstructed curve. comparison with simulated distribution is also included.
the range is always slightly underestimated
- fitting simulated data, a small underestimation comes from the model
- fitting real data, the underestimation is consistent with uncertainties
he tried data for measuring range without PMMA absorbers and data with absorbers to double check the WE thickness of the absorber
the analysis includes Bkg subtraction and calibration
comparison of run 47 30mm vs 52 21 mm and dependence with beam size
- the smaller beam has higher light output, but the difference in light output compensates at the Bragg peak.
- will plot spot size intermediate steps to check the consistency of the measurements.
started implementing more object oriented way of implementing data.
he is interested in running geant4 simulations in the near future

has been busy with grant application
performed hardware test to optimise the design of the electronic board with Bernard.
- the best option is having 2.86 mm pitch for best coupling PDs array and scintillator sheets
will double check with knowledge exchange the information provided by Laura about the market research grant
will update CosyLab and provide a draft

cross talk measurements performed last week
- LED with optical fibers to inject light
- he will perform the analysis to quantify it.
final version of the quenched bragg paper for submission
will start sending his thesis to Simon for corrections