RUN15 cell degradation study, by mass
- Degradation study by gainCorr:
a. drupal.star.bnl.gov/STAR/blog/ckimstar/run15-cell-degradation-study
b. drupal.star.bnl.gov/STAR/system/files/CKim_PWGSpin_190812.pdf
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- Degradation study by reconstructed pi0
a. Follows QA items and definition in previous report (drupal.star.bnl.gov/STAR/blog/ckimstar/run15-pptrans-calibration-final-qa-2)
b. Checked mass distributions with following conditions:
b-1. day 77 - day 93, 7 subgroups share same HV setting
b-2. After final iteration and gainCorr finalization
b-3. Checked 20 < pairE (GeV) < 40
b-4. Normalized each distribution by # of events processed
b-5. Two QA types will be shown: QA1 (Zgg + zVtx) and QA6 (Zgg + zVtx + SPC +CQC)
c. Notable and Strong degradation effect in small cells, but large cells' degradation effect look rather weak:
consistent to previous study based on gainCorr
c-1. QA1
c-2. QA6 (closest to calibration condition)
- ckimstar's blog
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