Attendees: Ashot, Chao G., Chao P., Dipangkar, Maxime, Mahbub, Weizhi, Xuefei, Xinzhan

Xuefei:
- fit tests:
  - higher order -> best is CF2 then leads to more uncertainties
  - Q2<0.018 GeV2 -> uncertainties 2 times bigger for poly ratio
  - more functionnal forms (Kelly, Arrington 2004, 2011)
- true R protocol defined using fitting tool -> uncontroversial handling of PRad results

Weizhi:
- live-time check: problem with the first sub-period (beam unstable)
- comparison of super-ratio with different live-time -> no angular dependency
- correction of efficiency with background subtraction: close to uncorrected one
- time dependency of gem efficiency: need sub-period division
- simulation check:
  - effect of dead area: some phi discpancies (few percents)
  - lower acceptance of lead-glass
- single cluster selection to remove pile-up -> change shape of super-ratio in the lead-glass region

APS april meeting:
- no invited talk sofar
- should be prepared to hand out a preliminary radius (with big uncertainties)

Maxime:
- wibbling of energy distribution vs theta:
  - some energy and elasticity (resolution) dependency inside the module (20%)
  - resolution vs theta and ep peak vs theta show some wibbling
  -> need parameterisation in simulation to check is origin is  understood