Difference between revisions of "GlueX TOF Meeting, December 12, 2011"
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* improved separation between pedestal and signal in the TOF prototype paddle with a longer ADC gate | * improved separation between pedestal and signal in the TOF prototype paddle with a longer ADC gate | ||
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glueing: | glueing: | ||
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vinyl cutter for vm2000 | vinyl cutter for vm2000 | ||
paul will work on getting bigger sheets or a roll | paul will work on getting bigger sheets or a roll | ||
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Revision as of 16:10, 12 December 2011
Monday, December 12, 2011
9:30 am EST
JLab: CEBAF Center, Room F326
Contents
Agenda
- Announcements
- Minutes from the last meeting
- Mechanical design: Tim, Chuck
- Prototype status: Paul, Sasha, Beni, Test Stand at FSU
- Trip Report
- Splitter or dynode for ADC?
- Prototype studies [1]
- Contract Status: Mark
- Construction Manual
- Quality Assurance Plan/Acceptance Procedures
- Construction Manager
- Construction Schedule
Communication
Videoconference
- ESNet: 8542553
- EVO: EVO site
- direct meeting link
- Phone Bridge ID: 443 0818
Slides
Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2011-4Q on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2011-4Q/ .
Minutes
Present:
- FSU: Paul Eugenio, Sasha Ostrovidov
- JLab: Eugene Chudakov, Chuck Hutton, Mark Ito (chair), Simon Taylor, Beni Zihlmann
Trip Report: Work at FSU
Beni reported on work he, Sasha, and Paul did during Beni's recent trip to FSU (November 28 through December 2). He led us through his wiki page summarizing the work. He described:
- cosmic ray test stand at FSU
- PMT gain measurements
- revised PMT current estimates
- time difference resolution measurements
Most encouraging, he gets a Δt/2 resolution of 80 ps near the center of the TOF prototype.
We agreed that the trip was very useful and will help with communication in the future.
Prototype Tests
Sasha showed progress in the last week with the prototype. See his [??? web page] for details. He showed:
- improvement in trigger counter time difference measurements after Paul changed the phototubes
- improved separation between pedestal and signal in the TOF prototype paddle with a longer ADC gate
PMT Choice
Attaching the PMT's
glueing:
optical epoxy used now? grease RTV
Using grease on trigger
program to explore gluing Eugene will send info to Paul
10-stage tube uniformly an attractive option
email outline all information
chuck silicon cookies, changes support issues got copy of new light guide
paul vinyl cutter for vm2000 paul will work on getting bigger sheets or a roll
