JEF meeting, June 18, 2021

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

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Agenda

• SICCAS crystals
• Module fabrication
• COMCAL tests, TAC running, etc.
• 3D Printing capabilities in Regina File:3D printer available Physics-UofR.pdf
• Data analysis
  • Total cross section rough estimates (Jon)
• Simulations

Minutes

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

• Got response from SICCAS contact regarding visit to one of their vendors, plan to meet with contact on Monday of next week
• COMCAL refurbishment continues
  • Needed to reapply optical grease for some modules (saw bubbles)
    • Changed procedure to apply uniform torque
  • LMS fibers ready to be rebundled and reinstalled
• Working in second setup on one of PS arms in the hall for checking out a set of 12 Lead tungstate modules
  • Need 12 PMT dividers + 6 spares
• Chris A. continuing to work on brazing for FCAL-2 modules -- now have 30-40 brass assemblies ready to go
• Expect 2 UNCW students to be able to come to the lab to work on module construction during the summer
• PMT divider design for FCAL-2 proceeding: Chris S. will order components and build PCBs
  • Ready for U. Regina/ UNCW to try out in July?
• Zisis advertised 3d-printing capability at U. Regina
• Phil will start working on getting a student to help out in module effort next summer
• Jon presented η cross section estimates over 0.2-2 GeV^2 t-range. Can compare to CLAS data using Low-Energy data set.
• Matt S. found 5x5 Lead glass prototype, plan to send to JLab for study/disassembly (for example, what happened to the wrapping material?)