GlueX TOF Meeting, December 20, 2012

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Revision as of 12:15, 20 December 2012 by Marki (Talk | contribs) (Minutes)

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GlueX TOF Meeting
Thursday, December 20, 2012
10:00 am EDT
JLab: CEBAF Center, F326

Agenda

  1. Announcements
  2. Review of last TOF bi-weekly meeting
  3. Mechanical design
    1. MiniTOF
    2. TOF Gluing Fixture
    3. TOF Module Wrapper
  4. PMT testing
  5. Contract status
  6. Calibration and Alignment
  7. Technical Design Report contribution

Communication

Videoconference

  1. ESNet: 8542553
  2. EVO: EVO site

Slides

Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2012-4Q on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2012-4Q/ .

Minutes

Present: FSU: Sasha Ostrovidov JLab: Chuck Hutton, Mark Ito (chair)

PMT Testing

pmt testing 4 undergraduates working on the testing 130 pmts 100% tested with led, single pe all done fine 70% tested with americium source 10% measureed with Cs- sodium iodide crystal 3 batches received and tested

Wrapping Material

esr 1 mil thick purchase order sent expect to receive in january no adhesive layer will be attached

Scintillator Bars

received 6 scintillator bars 2 regular 2 narrow and 2 short

some bars are out of tolerance by 1 or two mils above 5 mil tolerance

working on 3rd batch produced 76 normal bars 1/8" inch short , 12 of them not accepted yet

sasha setting up for scintillator measurements put into dark box spring loaded mechanism to hold pmts Sr source at various points, get adc and tdc light output spectrum a mystery

Mini-TOF Assembly

all parts made for mini-tof mid january start gluing, finish tresting this week start early january gluing ESR

Design Work

chuck is putiing mini tof ideas into final design

Chuck thinks eyes-on would be a good idea.