June 8, 2020 DIRC

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Meeting Information

GlueX DIRC Meeting
Monday June 8, 2020
1:00 pm, EDT
Remote only

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:
    • GlueX-II Jeopardy for PAC48: document includes DIRC performance discussion.
      • Send feedback to Matt and Justin (deadline to PAC is June 22).
    • JLab MEDCON5 and planning for 6-week summer run (beginning July 27)
  2. DIRC startup plans for summer run (Bill, Justin, All)
  3. DIRC commissioning analyses and 2020 studies (All)
    • Spring 2020 monitoring and data production status (Justin)
      • Monitoring launch ver12 completed (10 files from each run): used to check time offsets by run and initial PID studies
        • Files being combined at /volatile/halld/home/jrsteven/RunPeriod-2019-11/offline_monitoring/ver12_pass07/hd_root_data.root
      • Monitoring launch ver13 starting soon (utilizes DIRC reconstruction from Collaboration Meeting). If OK'd will proceed with full reconstruction launch.
    • Progress on monitoring plots (Bill)
    • Geometric reconstruction update (Ahmed/Roman)
    • FastDIRC update (Yunjie)
    • Revisting Roman's track rotation scan?
  4. Follow-up on additional action items from workfest (All)
    • Several studies require new MC samples: initial samples of 10M events available, next step is 100M event samples
  5. Summer to-do list
  6. AOB