Meeting time and location= 9:00 am EST (JLab time) Bluejeans only

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Agenda

Attendees: Liping,Igal,Jared,Tim W.,Zisis,Phil,Tim B.,Jane,Sasha,Josh,Azizah,S.T.

Jane visited Shanghai company and inspected 70 out of 175 new crystals as of her report on Friday
- Transmission looked okay, except the company reported values at 650 nA instead of 620 nA
  - Want to ask company to give measurements consistent with previous ones
  - Need to do cross calibration of transmittance measurements
- Some crystals had chips, some issues with quality control with chamfers, but generally better than previous batch
- Found 3 discolored crystals: 1 yellow, 1 brown, 1 purple -- Sasha pointed out that the discoloration is our major concern
  - Don't have company send us these?
50 more steel shields have been delivered, need to be annealed.
Waiting for light guide company to demonstrate polishing improvement, then order 150
Sasha installed last batch of crystals in PS setup before the run ended
- No big surprises (light output generally okay, except for 2 outliers)
- Want to do transmittance measurements for 2 bad ones, need access to Carl Zorn's lab, no word yet
- Plan to modify setup to make it easier to swap out a set of 12 crystals
Sasha installed 3 modified dividers in COMCAL, but 2 needed to be modified at the last minute and did not work
- Will do more tests on the bench
Enough hardware is available to build 20 more modules
- Need to finalize brazing procedure
- Work on inventory and coming up with a plan to proceed the week of 9/28/20
Work is proceeding on JEF picture archive