Difference between revisions of "GlueX TOF Meeting, November 10, 2011"

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(Created page with "Thursday, November 10, 2011<br> 10:00 am EDT<br> JLab: CEBAF Center, Room F326<br> =Agenda= # Announcements # [[GlueX TOF Meeting, October 27, 2011#Minutes|Minutes from the las...")
 
(notes as minutes)
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Talks can be deposited in the directory <code>/group/halld/www/halldweb1/html/talks/2011-4Q</code> on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2011-4Q/ .
 
Talks can be deposited in the directory <code>/group/halld/www/halldweb1/html/talks/2011-4Q</code> on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2011-4Q/ .
 +
 +
=Minutes=
 +
 +
 +
sasha
 +
beni chuck eugene
 +
 +
 +
measurements of six equal splitters, not much change
 +
50/50 110 ps mean time one plane
 +
80/20 107 ps
 +
 +
reflections
 +
  pulser, no reflections, 10 ns wide, no reflections
 +
  with pmt see reflections
 +
  shape of signal from pmt different
 +
  only reflection
 +
 +
8 stage pmt
 +
  tried to test with a source
 +
  gain looks 5x10^5
 +
  4 or 5 time smaller than 10-stage
 +
  put them into set-up. do not get separation of pedestal
 +
  nim amplifier to see if can better separation
 +
  pedestal more than 10 counts at 300 counts, signal at 400 counts
 +
  gate 150 ns
 +
 +
10 counts/pc * 150 ns * v = 10 counts
 +
 +
americium source

Revision as of 14:59, 10 November 2011

Thursday, November 10, 2011
10:00 am EDT
JLab: CEBAF Center, Room F326

Agenda

  1. Announcements
  2. Minutes from the last meeting
  3. Mechanical design: Tim, Chuck
  4. Prototype status: Paul, Sasha
  5. Contract Status: Mark

Communication

Videoconference

  1. ESNet: 8542553
  2. EVO: EVO site

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

sasha beni chuck eugene


measurements of six equal splitters, not much change 50/50 110 ps mean time one plane 80/20 107 ps

reflections 

 pulser, no reflections, 10 ns wide, no reflections
 with pmt see reflections
 shape of signal from pmt different
 only reflection

8 stage pmt 

 tried to test with a source
 gain looks 5x10^5
 4 or 5 time smaller than 10-stage
 put them into set-up. do not get separation of pedestal
 nim amplifier to see if can better separation
 pedestal more than 10 counts at 300 counts, signal at 400 counts
 gate 150 ns

10 counts/pc * 150 ns * v = 10 counts

americium source

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