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<p>People,</p>
<p>Please find the minutes <a moz-do-not-send="true"
href="https://halldweb.jlab.org/wiki/index.php/GlueX_TOF_Meeting,_November_7,_2018#Minutes">here</a>
and below.</p>
<p> -- Mark</p>
<p>__________________________________</p>
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<h1 id="firstHeading" class="firstHeading" lang="en"><span
dir="auto">GlueX TOF Meeting, November 7, 2018, </span><span
class="mw-headline" id="Minutes">Minutes</span></h1>
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lang="en">
<p>Present:
</p>
<ul>
<li> <b> FSU: </b> Sasha Ostrovidov</li>
<li> <b> JLab: </b> Ashley Ernst, Mark Ito (chair),
Simon Taylor, Beni Zihlmann</li>
</ul>
<p>There is a <a rel="nofollow" class="external text"
href="https://bluejeans.com/s/IoEYW/">recording of
this meeting</a> on the BlueJeans site. Use your JLab
credentials to access it.
</p>
<h3><span class="mw-headline"
id="Review_of_minutes_from_the_October_24_meeting">Review
of minutes from the October 24 meeting</span></h3>
<p>We went over <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX_TOF_Meeting,_October_24,_2018#Minutes"
title="GlueX TOF Meeting, October 24, 2018">the
minutes</a>.
</p>
<ul>
<li> Tomorrow will be the inaugural meeting of the PID
working group at 10 am.</li>
<li> The problem with the signal with strange baseline
noise was a loose signal cable.</li>
<li> Sasha pointed out that one motivation from going
from upgrade Option #2 to #3 is that in Option #2, the
notched out counter would go from a rate of 1.0 MHz to
1.8 MHz. Option #3 avoids this problem.</li>
</ul>
<h3><span class="mw-headline" id="Calibration_Status">Calibration
Status</span></h3>
<p>Ashley reported that she is still getting problems with
time difference fits converging. In the sample she
showed at the last meeting, 28% of the counters did not
produce fits. That was with 4 files. She repeated the
exercise on a run with 77 files and still gets a 5%
failure rate.
</p>
<p>Beni has produced ROOT files with all files from each
run added together. He will send the location to Ashley.
</p>
<h3><span class="mw-headline" id="Lucite_Shield_Geometry">Lucite
Shield Geometry</span></h3>
<p>Ashley has created a private version of HDDS with the
shield geometry she got from Thomas. She is still
missing material information for HDPE and Lucite.
</p>
<p>She is also having trouble getting HDGeant4 to run. She
will meet with Mark to try and resolve the problem.
</p>
<p>Ashley will contact Paul to make sure that the rates he
reported at a previous collaboration meeting correspond
to the arrangement presently in the Hall.
</p>
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<pre class="moz-signature" cols="72">--
Mark Ito, <a class="moz-txt-link-abbreviated" href="mailto:marki@jlab.org">marki@jlab.org</a>, (757)269-5295
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