Wednesday, April 8, 2020, 2:00 pm EDT

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Agenda

Meeting room = None. Remote only.

Photon Detector

• Update on full-gain/steering runs taken during CREX
• Discussion on uncertainty in the determination of the offset from the spectrum

Photon Analysis

• Analysis updates

Electron detector

• Analysis updates

Minutes

Mark D, Adam Z, Amali, Brian, Cip G, Dave G, Hanie L, Iris H, JCC, Juliette M, Kent P, Bob M, Alex C,

1. Photon detetor
   1. Amali will provide uncertainties for the measured collimator offsets.
2. Analysis
   1. Adam has trees at 3 levels or timescale (cycle, run and snail)
   2. Adam identified problems with logic in the cyclewise script.
      1. Solution is to ignore "laser state 4" for the moment but in a respin include all laser on data in the the analysis
3. Electron Detector
   1. Hanjie scaler analysis
      1. Can see asymmetries in the detector with a clear large asymmetry at the edge of the detector consistent with real events.
      2. Laser of has relatively large asymmetry that doesn't change sign with IHWP.
      3. Laser on has asymmetries in regions with no scattering that are different on left and right side of detector.