Calorimeter calibration for Muon run
Overview
Using calibration runs for HCAL, VHCAL and VETO, and calibration runs for ECAL, perform energy and timing calibration. Detailed run-down below
Calorimeters for 2023B run to calibrate:
- HCAL0,1
- VHCAL0,1
- ECAL (PreSh+Main)
- VETO (channels 1,3,5)
- Note: In muon mode, the PMT channels 0,2,4 are connected to the trigger system which are used as trigger for calibration runs (broad beam)
Runs used:
- For HCAL,VHCAL calibration: 10172 and cross-checked with 9772, QPLs off -> broad muon beam
- For VETO: first calibration was done with run 10172, but additional calibrations must be performed due to modifications done on VETO throughout the muon run (see task below)
- For ECAL calibration: 9954-9988 -> 40 GeV electron beam, ECAL moved to irradiate each cell individually
- For timing, additional runs based on trigger configuration and particle type were defined (see calibration files in
conddb/calib/2023mu/
of2023b-path
branch: https://gitlab.cern.ch/P348/p348-daq/-/tree/2023b-patch/p348reco/conddb/calib/2023mu)
Procedure description:
- Fits performed
- timing: for all detector cells a Gaussian fit
- energy:
- HCAL, VETO-1, VETO-5: landau+exp
- VHCAL: conv(landau,gauss)+exp
- VETO-3: conv(landau,gauss)
- ECAL0: gauss, ECAL1: Crystal Ball
- Lack of statistics: HCAL0-5-2, HCAL1-0-2, HCAL1-5-2
- peakpos, sigma, tmean and tsigma stored in .txt file
Status
Done
- HCAL0/1
- VHCAL0/1
Pending
- VETO calibration at high intensity
- Finalise stability checks
- Finalise ECAL calibration corrections