20200518-Optics-Mtg

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Logistic information

 Toll-Free Number (U.S.&  Canada):  888-240-2560
 PARTICIPANT CODE:                  # 585 129 220
 Room IRL:                            <none>

Minutes

Please post slides in haplog or docdb, before the meeting

1. Siyu haplog:4100
   • comparing central value +/- error for various sieve holes and measurements.
   1. Right arm dp from watercell in reasonable agreement with survey, except one point (dp=0%) which is significantly different (~1% different angle)
   2. looking for source of this discrepancy

1. Ryan: - Re-evaluating PREX database
   • Looking at residuals on theta,phi, and p to verify PREX data base
   1. much cleaner now with Siyu’s optimized data base
   2. still some problems in residual plots, perhaps best to debug).
      1. systematically shifted residuals (all positive on phi, for example)
      2. some residuals show very small error bar (low stat in some holes, or cut issue?)
      3. some residuals have large outliers (low stat in some holes, or cut issue?)
   3. ultimately to be qualified using ad-hoc correction to benchmark effect on Q2.

Attendence

Devi, Ryan, Siyu, Chandan, Nilanga, Cip, Bob, Dustin, Kent