Proton Calorimetry/Meetings/2021/12/09

Minutes for UCL Proton Calorimetry Meetings, 8th December

Simon Jolly, Saad Shaikh

Consolidated UCLH analysis with latest (corrected) plots into two presentations: 15th April experiment and 2nd Nov experiment.
- Will update links to these in previous meeting minutes etc.
- Correcting PDL normalisation in comparisons found that photodiodes match up very well with CMOS sensor in April experiment.
- Coupled with no change in fit results with CMOS sensor photodiode approximation fits, photodiodes appear to see enough light to give good results.
Ran fit replays for all runs in April and November experiments.
- In November experiment, only Run 16 gave unphysical results, likely due to low light levels.
- Will investigate if parameter limits can fix this.
Literature values of Birks' constant summarised in table 2.2 of Laurent's thesis – values vary greatly and are very specific to material itself.
- Will perform fits to Nikon data to see if Birks' value is consistent.
Delivered presentation at FRPT 2021, slides available here.
Naoki presented first results with hardware implementation of fitting function, slides available here.
- Will download and test software version of code that performs fit without ROOT.
Will deliver Christmas Talk on 20th December for HEP Group Day.
First round of HITRIplus internships/secondments announced. Will contact MedAustron and CNAO to learn more.