Meeting time and location= 9:30 am EST (JLab time) Bluejeans only

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Agenda

Attendees: Phil,Igal,Jared,Varun,Azizah,Liping,Jon,Zisis,Jane,Arshak,Sasha,Tim B., Bill B., S.T.

Sasha and Josh installed another set of 12 crystals in the PS setup in the hall
- Have now studied ~80 crystals with this setup
- Batch 8 had some internal imperfections
- Plan to send 2 discolored SICCAS crystals back to Shanghai after doing transmittance measurements
3 modified PMT dividers have been installed in COMCAL
- 2 have been fixed after correcting wrong resistor values (needed to keep current draw below 1 mA)
- Hope to test with beam this weekend
- Plan is to finalize design soon, then order 150 bases for COMCAL refurbishment
Jared presented his study of signal PDFs for Dark Scalar search
- Using 2 Crystal Ball functions to parameterize detector response (could in principle use double Guassian)
  - Pull distributions look good
  - Iterative parameter smoothing is working
- Developed a set of python scripts