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Folks,<br>
<br>
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,_December_3,_2015#Minutes">https://halldweb.jlab.org/wiki/index.php/GlueX_Start_Counter_Meeting,_December_3,_2015#Minutes</a>
.<br>
<br>
-- Mark<br>
_________________________________________________________________________________<br>
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<h1 id="firstHeading" class="firstHeading" style="font-weight:
bold;" lang="en"><span dir="auto">GlueX Start Counter Meeting,
December 3, 2015</span>, Minutes</h1>
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class="mw-headline" id="Minutes"></span>
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lang="en">
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">Present:</p>
<ul style="list-style-type: square;">
<li><b>FIU</b>: Werner Boeglin, Mahmoud Kamel</li>
<li><b>JLab</b>: Mark Ito (chair), Eric Pooser, Simon
Taylor, Beni Zihlmann</li>
</ul>
<h3 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Run_Readiness">Run Readiness</span></h3>
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">Eric went to the Hall yesterday to go
through the Hot Checkout List. He and Nick Sandoval found
3 dead channels. On the scope there is a large DC offset
on them; it looks like a loose connection between the ST-1
and ST-2 boards. Also Eric could not see output on the
FADC scalers. He thought this might be related to changes
in the ST crate to add the TRD (spare FDC package)
read-out to the crate (some F125s). The signals look good
at the front panel of the FADCs.</p>
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">This morning at the Run Planning
meeting it was announced we will not pull back the
start-counter/target cart to fix the dead channels.</p>
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">Eric will try soon to read-out the
start counter via the DAQ in any case. The start counter
remains un-checked in Hot Checkout.</p>
<h3 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Calibration">Calibration</span></h3>
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">Mahmoud is going through Eric's code
to do the light propagation delay calibration. He sees
clear separation of times when referenced to the RF
signal, both for the time-of-flight and the start counter.
This is work-in-progress.</p>
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