GlueX TOF Meeting, January 31, 2013

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GlueX TOF Meeting
Thursday, January 31, 2013
10:00 am EST
JLab: CEBAF Center, F326/327

Agenda

  1. Announcements
  2. Review of last TOF bi-weekly meeting
  3. Collaboration Meeting
    • Friday February 22, 2013
    • 13:30 Session IVa (75) --- TOF and PID - (Organizer: M. Ito)
  4. Construction status
  5. Contract status

References

  1. MiniTOF
  2. TOF Gluing Fixture
  3. PMT testing

Communication

Videoconference

  1. ESNet: 8542553
  2. EVO: SeeVogh site

Slides

Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2013-1Q on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2013-1Q/ .

Minutes

Present:

  • FSU: Sasha Ostrovidov
  • JLab: Eugene Chudakov, Chuck Hutton, Mark Ito (chair), Tim Whitlatch, Beni Zihlmann

Light Guide Production

Two students are now working on polishing light guides. Along with improvements in the procedure the rate of progress has doubles recently.

PMT Testing

  • All 194 PMTs have been received from Hamamatsu.
  • 160 have been tested, with single photoelectron peaks observed from an LED source.
  • 130 have been tested with the "americium source".
  • About 100 of them have been tested with the "cesium iodide source". Two of the tubes show strange spectra.
  • LED testing should be done in a couple of weeks.
  • All testing should be complete in three to four weeks.

Scintillator Testing

Mini-TOF Construction

Module assembly should start today.

There was an issue bolting the mini-TOF structure to the floor, but that has been solved.

Readiness Review