GlueX Start Counter Meeting, April 3, 2014

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GlueX Start Counter Meeting
Thursday, April 3, 2014
10:00 am EDT
JLab: CEBAF Center F326


  1. Announcements
  2. Review minutes from previous meeting
  3. Detector Construction Status
  4. Support Structure Construction Status

Communication Information

Video Conferencing


We will try BlueJeans for this meeting. Remember that log in is with your JLab username and password.

The BlueJeans Meeting ID is 997 409 529.

Given the late notice we may have to fall back to the old ESNet system. I've retained information for that below, just in case.

Fall-Back Information

  • ESNet: 8542554, non-standard channel
  • SeeVogh
    • Direct meeting link
    • Phone Bridge ID: 100 2777


Talks can be deposited in the directory /group/halld/www/halldweb/html/talks/2014-2Q on the JLab CUE. This directory is accessible from the web at .



  • FIU: Werner Boeglin, Eric Pooser
  • JLab: Eugene Chudakov, Mark Ito (chair), Chuck Hutton, Tim Whitlatch

Detector Construction Status

Eric gave us the update.

Eljen has made fifty bent scintillator bars. They arrived at McNeal yesterday. The team at McNeal is meeting to detail plans for machining. They will start in a week and the process should take about a week or two. The hope is to receive the counters at FIU at the end of April. Testing rate is 5 per day.

The mis-alignment study continues. There is an undergraduate working on it.

Fabrication of the assembly jig will start next week. That should take a week or two.

Final construction should start in the middle of May.

Support structure construction status

The Rohacell block are being glued now. Tom Carstens is doing that.

We looked at the final drawings for the support structure. They are now all out for signatures.

Werner reminded us that we plan to delay drilling holes in the second aluminum collar, in case some problem is identified with the hole locations in the first one.

Readiness Review

Mid-May looks to be a likely time for a Readiness Review. We also need to review plans for having Nick Sandoval travel to FIU to set-up the electronics.


We used BlueJeans for this meeting without major incident, which is good.