July 12, 2018 DIRC

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Meeting Information

GlueX DIRC Meeting
Thursday July 12, 2018
10:00 am, EDT
JLab room F326

Connection Using Bluejeans

  1. To join via Polycom room system go to the IP Address: (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.


  1. Announcements
    • Documentation wiki page DIRC
  2. Bar box transportation and installation: plans for a writeup? (Matt, et al.)
  3. Optical box
    • Water quality plan (Tim, et al.)
    • Fabrication status update (Ernie and Jason)
    • DIRC BBox Split Flange Seal (Jim/Tim)
    • PMT test fixture and cookies (Maria)
    • Dark box design: Air flow considerations and plan:
      • The power dissipated by each module is ~4 Watts, so the total in one optical box enclosure would be ~144 W.
      • Maintain temperature < 50 C inside the box to keep local FPGA temperatures < 80 C
      • Uniform flow over electronics boards (Jason)
  4. Installation schedule discussion:
  5. Cabling and DAQ integration
    • Cabling strategy (Tim, Fernando)
    • Installation of VXS crate and SSP modules by next week, with initial integration into DAQ to follow by Sasha and Sergei.
  6. Simulation studies (Maria and Roman)
    • Writeup of LUT algorithm provided by Maria
    • Implementation of reconstruction in PID library underway (Justin)
  7. MAPMT testing and Alignment Simulation(Bill and Andrew )
    • Magnetic field test (delayed by access to laser setup)
  8. Commissioning plans
    • Need a dedicated meeting to discuss commissioning strategy and status of simulation and reconstruction framework
    • Proposal: First meeting next week on Wednesday, please fill out Doodle poll
  9. Reminder: Addressing ERR review recommendations
    • Recommendations pertaining to Fall 2018 DIRC commissioning should be addressed by August 20 (close of Hall D for beam)
  10. AOB