[Halld-pid] Time-of-Flight Meeting Minutes, April 19, 2016

[Mark Ito]

Please find the minutes below and at 
https://halldweb.jlab.org/wiki/index.php/GlueX_TOF_Meeting,_April_19,_2016#Minutes 
.
_______________


  GlueX TOF Meeting, April 19, 2016, Minutes

Present:

  * *JLab*: Mark Ito (chair), Simon Taylor, Beni Zihlmann
  * *FSU*: Brad and Sasha absent due to shift taking duties.


      Calibration Status, JLab

Beni has been working on the calibration system.


        Timing Calibration

  * He has changed the philosophy from a completely stand-alone system,
    to one that can run as part of the Calibration Train. The new
    plug-ins have been checked into the Git repository.
  * He is currently correcting the configuration of his farm jobs to
    allow for enough disk space to accommodate the large ROOT files.
  * The scheme has been modified to use a global speed-of-light in the
    scintillator bars, saving unnecessary calibration effort.


        Energy Calibration

  * This is work in progress.
  * He is now using the same two attenuation lengths for all counters
    (i. e., light loss is modeled as a sum of two exponentials).
  * The code in the TOF library will have to change as a result.


      mcsmear Parameters

We reviewed Sean's compilation of mcsmear parameters for the 
Time-of-Flight 
<https://halldweb.jlab.org/wiki/index.php/Mcsmear_updates#TOF>. We noted 
that the list of parameters is identical to those for the start counter. 
Mark and Simon had discussed the parameters some weeks ago in the 
context of the start counter, and were confident that those ideas could 
be easily applied to the TOF. Details of the discussion were not easily 
recalled by either one, but Mark assured us that he has notes.


      Monitoring Histograms

We reviewed an example email 
<https://halldweb.jlab.org/wiki/index.php/Example_of_Monitoring_Histogram_Email> 
from the "simple" email list 
<https://halldweb.jlab.org/wiki/index.php/Simple_Email_Lists> that 
David, Justin, and Paul have put together. The mail sends out links to a 
minimal set of monitoring histograms, accumulated online, for runs taken 
during the previous twenty four hours.

We agreed that we need to designate a member of this working group to be 
responsible for reviewing the Time-of-Flight histograms daily during 
running.


      NIM paper, Technical Design Report

Mark has started a draft of an updated section for the TOF for the TDR.

Retrieved from 
"https://halldweb.jlab.org/wiki/index.php?title=GlueX_TOF_Meeting,_April_19,_2016&oldid=74615"

  * This page was last modified on 20 April 2016, at 19:45.


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