20200701-PREX2-Analysis

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Meeting room at JLab: REMOTE ONLY

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Agenda

1. Devi: PITA Slope from PREX-II HAPLOG 4158
   • CP: to convert ppm-to-Volt to ppm-to-ppm, it is divided by another ppm-to-volt from BCM.
   • CP: have we change PMT HV in the beginning because they are non-linear? DA: no, we didn't
   • KK: need to review pedestals and investigate size-able 2% deviation in the plot.
   • CP: we decided to used the same pedestal for detectors and BCMs. KP: and the pedestals seem stable
   • CP: scatter of pedestal is less than 1%.
   • KK: what's the positive non-linearity. KP: non-linearity in detector is less than that ofBCM.
   • PK: run range 3594-3738 using digital downstream BCM for normalization
   • KK: what's the best way to look at non-linearity in BCM? KP: I think it is the current scans. Signal injection might be relevant and it is instrumental.
   • DA: bench test non-linearity is within 0.3%. KK: we need to understand what causes PITA slope non-zero
   • KK: what's the error bar on this PITA data points?
   • DA: difference between regressed and raw is similar as scattering between run to run. Maybe it is not a common effect from BCM. KK: we should factorize it with different ways to look into it.

1. softwares:
   • Updated prompt aggregator to work on the ifarm too (supplementary aggregation plots to everyone else's) - http://ace.phys.virginia.edu/HAPPEX/4159
     • Main feature: Comparison of including BMOD data for PREX-II respin 2 - Victoria
     • Other new features: regression and dithering live in the same files now, results from histogram of the multiplet-wise corrections are available, as well as the multiplet-wise difference difference between dithering and regression directly. Also, includes all combinations of ATs and SAMs, and all injector and beamline devices, only downside is slopes aren't carefully treated anymore (but better other resources exist now)
     • Needs a few plotting routine improvements - Cameron, Sakib
     • Aggregator outputs by run, minirun, or slug (potentially pitts too if wanted) are generally useful for other studies
     • Open to suggestions for additional kinds of analyses (different cuts, combinations, sub-blocks, etc.)
   • HRS Analysis documentation, work is speeding up

Present

Kent P, Tao Y, Adam Z, Chandan G, David A, Devi A, Dustin M, Paul S, Quinn C, Robert R, Ryan R, Sakib R, Silviu CD, Siyu J, Victoria O, Weibin Z, Ye T, Yufan C, Cameron C, Devika B, Caryn P, Ciprian G, KK, Paul K, Sanghwa P, Ezekiel W, Briann Q