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<p>Folks,</p>
<p>Please find the minutes <a moz-do-not-send="true"
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Start_Counter_Meeting,_January_24,_2019#Minutes">here</a>
and below.</p>
<p> -- Mark</p>
<p>___________________________________________________</p>
<p>
</p>
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<h2 id="firstHeading" class="firstHeading" lang="en"><span
dir="auto">GlueX Start Counter Meeting Minutes, January
24, 2019</span></h2>
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<p>Present:
</p>
<ul>
<li> <b> FIU: </b> Mahmoud Kamel</li>
<li> <b> JLab: </b> Thomas Britton, Mark Ito (chair),
Simon Taylor, Beni Zihlmann</li>
</ul>
<p>There is a <a rel="nofollow" class="external text"
href="https://bluejeans.com/s/FXuv5/">recording of
this meeting</a> on the <a rel="nofollow"
class="external text"
href="https://jlab.bluejeans.com/">BlueJeans site</a>.
Use your JLab credentials to authenticate.
</p>
<h3><span class="mw-headline" id="Announcements">Announcements</span></h3>
<p>Hot Check-Out for the Start Counter needs to be done by
the end of the week. Beni is going to take care of the
remaining steps.
</p>
<h3><span class="mw-headline" id="Collaboration_Meeting">Collaboration
Meeting</span></h3>
<p>We agreed that there is no need for a Start Counter
presentation at the upcoming Collaboration Meeting.
</p>
<h3><span class="mw-headline"
id="Review_of_minutes_from_the_meeting_on_January_10">Review
of minutes from the meeting on January 10</span></h3>
<p>We went over <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Start_Counter_Meeting,_January_10,_2019#Minutes"
title="GlueX Start Counter Meeting, January 10, 2019">the
minutes</a>. We are still thinking about a Start
Counter Maintenance Program.
</p>
<h3><span class="mw-headline" id="SiPM_Dark_Rate">SiPM
Dark Rate</span></h3>
<p>Beni has been thinking about how to monitor dark rate
in the SiPM's. The classic approach is to integrate
charge in some gate and count the number of one pixel,
two pixel, etc. events above pedestal. It is not clear
such an approach would work in the Hall with the FADC's.
Still perhaps a look at total charge above a cut above
threshold might work.
</p>
<p>Beni has been written a plugin to create histograms and
has a plan for analyzing them. The plan is to run with
the beam off, with no sparsification of FADC read-out,
and a clock trigger at roughly 1 kHz. This will require
a special DAQ configuration, but Sascha Somov has told
us that that is not a problem. We might consider reading
out the other SiPM-based detectors at the same time
(BCAL, PS, TAGM). The run should not take much time and
needs to be done when there is no beam, so it need not
compete with real data taking. We will try a test next
week to see what the data looks like.
</p>
<h3><span class="mw-headline" id="NIM_Paper">NIM Paper</span></h3>
<p>No new news on the NIM paper.
</p>
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