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<p>Friends,</p>
<p>I know you've been waiting, and here they are! Please find the
minutes <a moz-do-not-send="true"
href="https://halldweb.jlab.org/wiki/index.php/GlueX_TOF_Meeting,_September_9,_2020#Minutes">here</a>
and below.</p>
<p> -- Mark</p>
<p>__________________________________</p>
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<h2 id="firstHeading" class="firstHeading" lang="en"><span
dir="auto">GlueX TOF Meeting, September 9, 2020, </span><span
class="mw-headline" id="Minutes">Minutes</span></h2>
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lang="en">
<p>Present: Mark Ito (chair), Sasha Ostrovidov, Susan
Schadmand, Simon Taylor, Beni Zihlmann
</p>
<p>There is a <a rel="nofollow" class="external text"
href="https://bluejeans.com/s/qUXy9epamHX/">recording
of this meeting</a> on the BlueJeans site. Use your
JLab credentials to gain access.
</p>
<h3><span class="mw-headline"
id="Review_of_minutes_from_the_last_meeting">Review of
minutes from the last meeting</span></h3>
<p>We went over <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX_TOF_Meeting,_August_26,_2020#Minutes"
title="GlueX TOF Meeting, August 26, 2020">the minutes
of the August 26 meeting</a>.
</p>
<h4><span class="mw-headline" id="Re-calibration">Re-calibration</span></h4>
<p>Beni complete the re-calibration, but Sean found two
runs where the constants had problems. Beni used nearby
runs to provide constants for the problematic runs. This
may indicate a residual bug in the calibration code.
This will be examined in the future.
</p>
<h4><span class="mw-headline" id="TOF_NIM_paper">TOF NIM
paper</span></h4>
<p>Not forgotten, not progressing either.
</p>
<h3><span class="mw-headline" id="Work_during_the_SAD">Work
during the SAD</span></h3>
<p>Beni brought our attention to an email he sent to
Eugene in response the Eugene's call for items that need
work during the Scheduled Accelerator Down. From Beni's
message:
</p>
<blockquote>
<p>With regard to the TOF we have to do some maintenance
on the PMTs. At this point I do not yet know how many
PMTs we need to replace but I think there will be a
few. Paul Eugenio has developed tools that this PMT
replacements can be done in-situ. However we have to
learn how to use them. If we find that the one
suspicious paddle with weird signal shape is more than
just a bad PMT, like a broken light guide we may
consider taking the TOF down and lay it flat in order
to fix it. This obviously will require some more
resources and may need the assistance and/or at least
guidance of FSU.
</p>
</blockquote>
<p>Visits of collaborators to the Lab is discouraged
during MEDCON-5. Some advanced planning will be required
to do this work.
</p>
<h3><span class="mw-headline" id="Action_Item_Recap">Action
Item Recap</span></h3>
<ol>
<li> Decide on when to ship PMTs to JLab from FSU (Mark,
Paul Eugenio)</li>
<li> Prepare a complete draft of the TOF NIM paper.
(all)</li>
<li> Make a plan for TOF repair during the SAD. (all)</li>
</ol>
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