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<p>Folks,</p>
<p>Please find the minutes below and at</p>
<p>
<a class="moz-txt-link-freetext" href="https://halldweb.jlab.org/wiki/index.php/GlueX_TOF_Meeting,_November_8,_2017#Minutes">https://halldweb.jlab.org/wiki/index.php/GlueX_TOF_Meeting,_November_8,_2017#Minutes</a>
.</p>
<p> - Mark</p>
<p>___________________</p>
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<h2 id="firstHeading" class="firstHeading" lang="en"><span
dir="auto">GlueX TOF Meeting, November 8, 2017, </span><span
class="mw-headline" id="Minutes">Minutes</span></h2>
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lang="en">
<p>Present:
</p>
<ul>
<li> <b>FSU</b>: Brad Cannon, Sasha Ostrovidov</li>
<li> <b>JLab</b>: Fernando Barbosa, Thomas Britton,
Eugene Chudakov, Mark Ito (chair), Simon Taylor</li>
</ul>
<p>There is a <a rel="nofollow" class="external text"
href="https://bluejeans.com/s/aZRkA/">recording of
this meeting</a> on the BlueJeans site.
</p>
<h3><span class="mw-headline" id="Announcements">Announcements</span></h3>
<p>There has been no change to the nominal start date for
the run in December.
</p>
<h3><span class="mw-headline"
id="Review_of_minutes_from_the_previous_meeting">Review
of minutes from the previous meeting</span></h3>
<p>We went over the <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX_TOF_Meeting,_October_25,_2017#Minutes"
title="GlueX TOF Meeting, October 25, 2017">minutes
from October 25</a> without significant comment.
</p>
<h3><span class="mw-headline" id="HV_Problem">HV Problem</span></h3>
<p>Fernando reported on a problem with one of the TOF CAEN
HV chassis. The entire chassis was not responding. Nick
Sandoval and Chris Stanislav narrowed the problem down
to a single module in the chassis and replaced it. All
appears to be working now. The suspect module will be
tested and returned to CAEN for repair if need be.
</p>
<h3><span class="mw-headline" id="PMT_Testing">PMT Testing</span></h3>
<p>Sascha reported that 23 of the 25 PMTs have been tested
now. Because of the HV supply being used (with analog
dial HV setting), the applied voltage cannot be repeated
as precisely as in years past.
</p>
<p>There is still one tube with an apparently low quantum
efficiency as shown in plots presented at the previous
meeting. Sasha will investigate further, beyond the
single photo-electron test that exhibits the problem.
</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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