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<p>People,</p>
<p>Please find the minutes below and at
<a class="moz-txt-link-freetext" href="https://halldweb.jlab.org/wiki/index.php/GlueX_Start_Counter_Meeting,_January_26,_2017#Minutes">https://halldweb.jlab.org/wiki/index.php/GlueX_Start_Counter_Meeting,_January_26,_2017#Minutes</a>
.<br>
</p>
-- Mark<br>
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<h2><span class="mw-headline" id="Minutes">Minutes</span></h2>
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<p>Present:
</p>
<ul>
<li> <b>FIU</b>: Werner Boeglin, Mahmoud Kamel</li>
<li> <b>JLab</b>: Mark Ito (chair), Simon Taylor</li>
</ul>
<h3><span class="mw-headline" id="Announcements">Announcements</span></h3>
<p>The Hall will close on Friday. Beam is expected on
Monday.
</p>
<h3><span class="mw-headline"
id="Review_minutes_from_the_last_meeting">Review
minutes from the last meeting</span></h3>
<p>We looked at <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Start_Counter_Meeting,_January_12,_2017#Minutes"
title="GlueX Start Counter Meeting, January 12, 2017">minutes
from January</a> without significant comment.
</p>
<h3><span class="mw-headline" id="Run_Readiness">Run
Readiness</span></h3>
<p>Mark completed Hot Checkout. There was a problem
analyzing data due to missing information for the number
of samples summed to get a pedestal value. We think this
is due to using the stand-alone DAC (TI) rather than the
global system (TS). The code was kludged to make this
work, but a more permanent solution should be on its
way.
</p>
<h3><span class="mw-headline"
id="Calibration.2C_Propagation_Delay">Calibration,
Propagation Delay</span></h3>
<ul>
<li> Mahmoud reports getting non-physical values for the
speed of light in the scintillator.</li>
<li> Sean has been looking at the calibrations as well.
With the previously poor TOF calibrations, he was
seeing time shifts in a few paddles, presumably from
picking the wrong RF bucket (500 MHz). He is now
re-running the calibrations with recently improved
time constants for the TOF from Beni.</li>
<li> Sean asked that Mahmoud check, for the channels
that are not showing problems, whether the constants
are consistent with those found in the Spring. We do
not expect propagation delay to change from run to
run.</li>
<li> Werner talked to Eric Pooser about the Start
Counter NIM paper. Eric is busy with the KPP run in
Hall C at the moment; when that is over he will have
more time.</li>
</ul>
<h3><span class="mw-headline" id="Collaboration_Meeting">Collaboration
Meeting</span></h3>
<p>Mahmoud will give an update on the calibration at the
meeting next month.
</p>
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<li id="lastmod"> This page was last modified on 27 January
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<pre class="moz-signature" cols="72">--
<a class="moz-txt-link-abbreviated" href="mailto:marki@jlab.org">marki@jlab.org</a>, (757)269-5295
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