GlueX Start Counter Meeting, April 5, 2012

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GlueX Start Counter Meeting
Thursday, April 5, 2012
10 am EDT
JLab: CEBAF Center, Room 326/327


  1. Announcements
    1. Mark Ito submitted PR for SiPM's:
      • 3X3 mm, 100 micron pixels, 10 pieces
      • 3X3 mm, 50 micron pixels, 10 pieces
  2. Review minutes from previous meeting
  3. Prototype Report: FIU team
  4. Readout Design: Tim, Chuck, Fernando
  5. Contract Status: Werner
  6. Simulation: Puneet



  • FIU: Puneet Khetarpal, Eric Pooser
  • Jlab: Eugene Chudakov, Chuck Hutton, Beni Zihlmann(chair)
  1. Juri (Hall-B), Marc Ito and Chuck Hutton did meet to discus Hall-B start counter design.
  2. FIU was not able to get into contact with machinist from McNeal who polishes the scintillator.
  3. Chuck showed current design status of the start counter drawings. The following questions were raised:
    1. Hall-B uses MV2000 to wrap the scintillators. How do they do that?
    2. Why using an outer foam shell? Could this be dropped in the installation? Maybe only use it for transport or handling? Maybe only have some kind of tape on the outside for holding the structure together?
    3. Could the inner foam shell in the down stream nose but reduced to half the length or even less? Only have foam during construction but remove some of the nose when installing it?

Communication Information

Video Conferencing


Talks can be deposited in the directory /group/halld/www/halldweb/html/talks/2012-2Q on the JLab CUE. This directory is accessible from the web at .