December 17, 2018 DIRC

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Meeting Information

GlueX DIRC Meeting
Monday December 17, 2018
1:00 pm, EDT
JLab room F326

Connection Using Bluejeans

  1. To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 846453895.
  2. To join via a Web Browser, go to the page [1] https://bluejeans.com/846453895 .
  3. To join via phone, use one of the following numbers and the Conference ID: 846453895
    • US or Canada: +1 408 740 7256 or
    • US or Canada: +1 888 240 2560
  4. More information on connecting to bluejeans is available.

Agenda

  1. Announcements
    • Last meeting of 2018, next meeting January 7th @ 1 pm. After that will need to find new time slot for Spring, expect a Doodle poll.
  2. Optical box
    • Fabrication status update (Ernie and Jason)
      • Dark box enclosure: testing at Bates and delivered to JLab (Jason)
      • Quartz window RTV at vendor and delivery schedule? (Ernie)
        • Plexiglass backup (Justin/Tim)
    • LED fiber feedthroughs and diffuser
    • Testing at JLab:
      • Laser alignment test in ESB: lower box complete, upper box waiting for flange (Bill)
      • Darkbox light tightness and cooling tests [3] [4] (All)
  3. Installation schedule (Tim)
  4. Software/simulations
    • Finalizing DIRC "as-built" geometry: bar box internals, etc. (Yunjie)
    • LED generator and timing calibration (Yunjie)
    • Time-based studies and adding # photons to LUT likelihood (Maria)
    • Alignment updates (Cris)
    • Software overview and tasks (All)
      • Many recent updates to dirc_commissioning_2018 branches to include flag for reflected photons, switch to plexiglass window, and add DIRC hits to REST format and analysis Three output for faster iterations during commissioning in February.
  5. Addressing ERR review recommendations
    • Recommendations pertaining to DIRC commissioning should be addressed before installation.
  6. AOB