JEF meeting, January 31, 2020

From GlueXWiki
Jump to: navigation, search

Meeting time and location= 10:00 am EST (JLab time) HallD conference room


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 199.48.152.152 or bjn.vc
    • Enter meeting ID above

Agenda

Minutes

Attendees: Josh, Phi, Tim B., Tim W., Mark S., Jane, Zisis, Sasha, Arshak, S.T.

  • Clean space in TEDF ready to go pending OSP
  • 2nd Light Yield setup ready to go pending network setup
  • SICCAS crystals: 160 ready for shipment, delay due to extended Chinese New Year holiday (and possibly coronavirus issues)
  • 150 Hamamatsu PMTs with correct base have arrived at the lab -- 20% have larger diameter than our criterion
  • Base redesign test using 3 COMCAL channels: read out raw waveforms, Sasha still analyzing, but looks like will need to reduce gain from 24x to 2-3x.
    • Head dissipation of 1 W/ PMT will need to be taken into account when designing cooling system.
  • Light monitoring system: will use plexiglas scheme a la FCAL
    • Multiple light sources with integrating sphere
    • Tests with full-scale plexiglas: summer project?
  • CMU: tooling for production of PMT housing (soft iron)
  • Light guide dimensions need to be finalized: do we go with larger diameter, which needs machining and increases cost? Out for quotes.
  • Brass straps: identified new vendor
    • Plans for stress test well underway (setup ready to go, temperature control worked out with Nick S.)
  • Flanges: need 20-50 by mid March, only have 3