[Halld-pid] Time-of-Flight Meeting, Tue. July 5, 11 am, F326/7, BlueJeans: 350 531 998

[Mark Ito]

Folks,

An off-week meeting. Find the meeting page below and at 
https://goo.gl/HU47Fj .

   -- Mark

__________________


  GlueX TOF Meeting, July 5, 2016

 From GlueXWiki

GlueX Time-of-Flight Meeting
Tuesday, July 5, 2016
11:00 am EDT
JLab: CEBAF Center, Room F326/327


    Agenda

 1. Announcements
 2. Review of minutes from the previous meeting
    <https://halldweb.jlab.org/wiki/index.php/GlueX_TOF_Meeting,_June_28,_2016#Minutes>
 3. PMT Gains: The folowing plots show the signal peak amplitude for
    hits that are matched to tracks
    the data are from different runs where we did a beam current scan
    starting with 40nA and going up to 150nA. At 40nA beam current the
    peak amplitudes look still reasonable, but already at 80nA a
    degradation is noticeable which becomes critical at even higher
    currents(luminosities). The radiator was 50um diamond.
      * Run 11634 with 40nA beam current:
        Adc peak run11634.gif
        <https://halldweb.jlab.org/wiki/index.php/File:Adc_peak_run11634.gif>
      * Run 11635 with 80nA beam current:
        Adc peak run11635.gif
        <https://halldweb.jlab.org/wiki/index.php/File:Adc_peak_run11635.gif>
      * Run 11637 with 110nA beam current:
        Adc peak run11637.gif
        <https://halldweb.jlab.org/wiki/index.php/File:Adc_peak_run11637.gif>
      * Run 11636 with 150nA beam current:
        Adc peak run11636.gif
        <https://halldweb.jlab.org/wiki/index.php/File:Adc_peak_run11636.gif>
 4. The degradation of the PMTs over the spring run period is illustated
    with the following plots shoing the RAW ADC Signal amplitudes for an
    early run (run 10346) and a late run (run 11634 save as above low
    current 40nA)
      * Raw TOF data Signal amplitude RUN 10346 (left) track matching
        hits (right):
        Tofpmt amp raw run10346.gif
        <https://halldweb.jlab.org/wiki/index.php/File:Tofpmt_amp_raw_run10346.gif>
        Adc peak run10346.gif
        <https://halldweb.jlab.org/wiki/index.php/File:Adc_peak_run10346.gif>
      * Raw TOF data Signal amplitude RUN 11634 (left) track matching
        hits (right)::
        Tofpmt amp raw run11634.gif
        <https://halldweb.jlab.org/wiki/index.php/File:Tofpmt_amp_raw_run11634.gif>
        Adc peak run11634.gif
        <https://halldweb.jlab.org/wiki/index.php/File:Adc_peak_run11634.gif>
 5. Calibration Status
 6. NIM paper: svn co
    https://halldsvn.jlab.org/repos/trunk/publications/GlueXTOF
    <https://halldsvn.jlab.org/repos/trunk/publications/GlueXTOF%7C>


    Communication

  * The BlueJeans Meeting number is 350 531 998.
  * Enter BlueJeans Meeting <http://bluejeans.com/350531998>


      Slides

Talks can be deposited in the directory 
|/group/halld/www/halldweb/html/talks/2016| on the JLab CUE. This 
directory is accessible from the web at 
https://halldweb.jlab.org/talks/2016/ .

Retrieved from 
"https://halldweb.jlab.org/wiki/index.php?title=GlueX_TOF_Meeting,_July_5,_2016&oldid=76071"

  * This page was last modified on 1 July 2016, at 14:49.

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