Difference between revisions of "GlueX Start Counter Meeting, June 2, 2011"
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| − | + | Present: | |
| − | + | * '''FIU''': Werner Boeglin, Lei Guo | |
| − | + | * '''JLab''': Mark Ito (chair), Sascha Somov, Beni Zihlmann | |
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| − | Mark Sascha Beni | + | |
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kuraray contacted | kuraray contacted | ||
Revision as of 20:44, 2 June 2011
Contents
Location, Time
Thursday, June 2, 2011
3:30 pm EDT
JLab: CEBAF Center, Room F326/7
Agenda
- Announcements
- Mantis problem tracker: new project Start Counter
- Review minutes from previous meeting: all
- Start Counter News
- Fiber information
- Carl responded saying we should talk to Kuraray
- Elton sent letter to Kuraray folks
- New SiPM amplifier, see https://mailman.jlab.org/pipermail/halld-pid/2011-April/000157.html
- SiPM order for FIU, see https://mailman.jlab.org/pipermail/halld-pid/2011-April/000159.html
- Fiber information
- MOU status
- Sent latest version to Allison on May 5.
- got comments from Glenn Young on May 17.
- Sent Glenn's comments to Werner today.
- Will incorporate Glenn's comments and re-submit to Allison.
Communication Information
Telephone
To connect by telephone:
- dial:
- US and Canada: (866)740-1260 (toll free)
- International: (303)248-0285 (toll call) or look up toll-free number at http://www.readytalk.com/intl
- enter access code followed by the # sign: 3421244#
Video Conferencing
- ESNet: 8542553
- EVO:
- Meeting URL: http://evo.caltech.edu/evoNext/koala.jnlp?meeting=eaeDetvlv8a9asasIa
- Phone Bridge ID: 8 5557
Slides
Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2011-2Q on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2011-2Q/ . You have to be a member of the "halld" Unix group to do this.
Minutes
Present:
- FIU: Werner Boeglin, Lei Guo
- JLab: Mark Ito (chair), Sascha Somov, Beni Zihlmann
kuraray contacted 1 mm square fibers, enough for one paddle clamped to a shape that can be attached to scintillator
will get scintillator by june 13
measuring with slow pipm to understand from width of pedestal, with leading edge, measureing rise time, conclude that noise is driving resolution
have not used constant fraction discriminator, easier to work with leading edge
correct for walk with software, rise time and sigma of noise
sipm's have arrived,
fernando has made pre-amps for them gains are 35 and 70 both look good measurements done with reference pmt want to do measurements ourselves
fernando on vacation, ask monday for new pre-amp
will build light guide with clear fiber
tuesday werner will be here
special electronics
30 vs 40, more space, each detector ratio of machined area to pressed area better for 30 paddle 15 mm for 40, 12 mm
drawings will be done at jlab
segmentation question from Sascha : werner motivated by aspect ratio thing
