SoLID Ecal Weekly 20231005

Update on Radiation

Update on MIP study

Ye's slides :

• To clean up the MIP data sample:
  • Baseline shift correction
  • Gain shift correction (based on MIP height)
  • Fix 40ns as the integral TW in the decoder
  • SC_A & SC_D trigger efficiency is very low at ~3%, in order to get pion dominant samples, we need to apply Shower_{i}/ShowerSum>0.8+ 200 ADC<preshower<500 ADC cuts.
  • The conclusion is that the MIP peaks we looked at are indeed MIP peaks, there is no confusion about that.

Discussions

• NPS: Some NPS PMT bases have begun failing due to a component which is not radiation hard