20200114-PREX2-Analysis

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Logistic information

Meeting room at JLab: Counting house conference room

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Agenda

Analysis projects

  1. Marisa Petrusky: position dependence of light yield during PREX2 slides
    • MP: made updates with suggestions from last time
    • MP: looked at other runs and it seems that the LHRS still saw a good separation (pedestal-signal) but the RHRS is pretty bad. DA: the separation vaired depending on runs
    • KP: can you zoom into the Z axis as well for the 2d plots? MP: will do
    • MP: the fits slightly improved with the new cuts, but overall there is agreement with previous results
    • MP: the transverse dependece shows a stronger parabolic dependence with merged bins; KP: can you recheck the axis to see if you are cutting off events?
    • MP: the parabolic fits between two runs are not consistent (2011 is fairly flat). KP: again check that the y dimension includes the entire population
    • KP: we should look at the Q2 distribution and weight it by the funtional form that Marissa found. DA: will do
  2. Victoria: beam modulation decisions for slugs without BMW data [1]
    • VO: separated BMW data based on a "3sigma criterion": averaged data that was within 3sigma of the first point of a period
    • VO: I checked the plots manually (not an automated search).
    • TY: what about the detector sensitivites? is there stability there? The deteectors are very sensitive to target degradation. VO: true. this will have to be done later on.
    • TY: if you look at the plots on slug 59; what would happen is the change would happen in a single run? VO: not sure, will have to look. I don't remember that happening. PK: we should probably throw them out if it doesn't happen very often.
    • VO: we never allowed the slopes to go over slug boundaries even if the slopes were the same. This will be important for slugs without beam modulation. Will present these in future. YT: we could make a supercyle from combining neighbouring super cycles.
  3. Tao: first look at respin haplog4000
    • TY: I made a summary of issues/questions related to beam corrections.
    • KP: number 1 is a small problem that we should fix.
    • KP: we definitely need some cleanup for the run ranges; so we don't overlap or miss anything.
    • KP: we could remove some of the data with really bad fluctions, but we need to be careful to not remove too much.
    • TY: i will compare reg and dit for data where we don't have BMW

PREX Respin

  1. Robert: respin update
    • PK: Robert had re-started the respin and was doing it in a chunk-wise fashion.


Present

  • JLab:
    • Tao Y, Weibin Z
  • Phone:
    • Cameron C, Devi A, Dmitrii N, Kent P, Ye T, Ciprian G, Ryan R, Victoria O, Caryn P, Rakitha B, Dustin M, Marisa P, Adam Z, Amali P, Chandan G, Devaki P, Don J, Jinlog Z, Paul K, Yufan C, Sakib R,

Excused