JEF meeting, June 25, 2021

From GlueXWiki
Revision as of 14:06, 25 June 2021 by Staylor (Talk | contribs) (Minutes)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

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

Connection instructions

We are using BlueJeans Video/Audio conferencing. Our meeting ID number is 992533564. Click "Expand" for more details.

  • Make sure you have created a BlueJeans account via your JLab CUE account using this link:
  • If connecting via Web Browser: click this link (no passcode is needed):
  • If connecting via Phone: Dial one of the following numbers and then enter the meeting ID above and hit "#" or "##"
  • If connecting via Polycom unit:
    • Dial or
    • Enter meeting ID above


  • SICCAS crystals
  • Module fabrication
  • COMCAL tests, TAC running, etc. -- Sasha
 Ccal lms2.jpg Ccal lms1.jpg
Broken Strips
  Ccal rep4.jpg Ccal rep2.jpg Ccal rep3.jpg 
Divider installation
   Ccal rep1.jpg


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

  • Sasha/Jane/Liping had phone meeting with SICCAS contact last Sunday
    • Contact reported progress regarding lead oxide powder: SICCAS expect to receive new powder mid-July
      • SICCAS will then grow some test samples (~2 week scale) to verify quality
    • SICCAS also worked on reusing ingots to grow new crystals
    • New batch by September/October?
  • Still substantial schedule risk for procuring all needed crystals by 2023
    • Discussed purchasing Crytur crystals as a backup plan
    • Possibly get SICCAS crystals from Hall-C (NPS plans to use Crytur crystals)
  • COMCAL refurbishment continues
    • All bundles for LMS are ready
      • Sasha checked light transmission using black box setup, found good uniformity
    • All dividers checked, bottom row reinstalled
    • Reapplied optical grease for 33 modules
    • Found one broken brass strap, probably weakened due to corrosion arising from flux that was not fully cleaned off
  • FCAL-2 module construction to resume in July with UNCW student help
    • Maybe use FCAL-2 modules in COMCAL for PrimEx run in 2022
  • Plan to submit proposal to next year's PAC to ask for more time for JEF program
    • Need to redo simulations with smaller insert size