- LPTA (Fred/Johann/Claudia)
- Can GCRcalib help to calibrate ACD HI charge scale?
I (Fred P.) modified the compiled macro I used to analyse the GCR events in opssim2 data, and added the reading of digi events (now it reads merit, gcr and digi files). I obtained the spectrum of each PM of each tile when GCRcalib is able to infer a value for the atomic number Z. The plots below show the low-range and high-range spectrum (top and medium plots) for all species, and the high-range spectrum for events tagged as carbons (bottom plots). This is for the PMT A of the central tile at the top of the ACD (left panel) and of the central tile (2nd row, 3rd column) of an ACD side (right panel). The collection time is 43h.
The spectra do not exhibit any clear signature of heavy ions, probably due to all the "stuff where a bunch of particle leave the side of the ACD and cause a bit pile up of charge" (E. charles), especially in high-energy events. So the next step will be to correlate these results with AcdTrkHitPoca in ACD recon, in order to only keep the hits which have a suitable DOCA to Tkr1 track. - Protons/Heliums
- Quenching models
- Can GCRcalib help to calibrate ACD HI charge scale?
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