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<p>Friends,</p>
<p>Please find the minutes <a moz-do-not-send="true"
href="https://halldweb.jlab.org/wiki/index.php/GlueX_TOF_Meeting,_August_14,_2019#Minutes">here</a>
and below.</p>
<p> -- Mark</p>
<p>_________________________________________________</p>
<p>
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<h2 id="firstHeading" class="firstHeading" lang="en"><span
dir="auto">GlueX TOF Meeting, August 14, 2019, </span><span
class="mw-headline" id="Minutes">Minutes</span></h2>
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lang="en">
<p>Present:
</p>
<ul>
<li> <b> FSU: </b> Ashley Ernst, Paul Eugenio, Sasha
Ostrovidov</li>
<li> <b> JLab: </b> Mark Ito (chair), Simon Taylor,
Beni Zihlmann</li>
</ul>
<p>There is a <a rel="nofollow" class="external text"
href="https://bluejeans.com/s/UEEgD/">recording of
this meeting</a> on the BlueJeans site. Use your JLab
credentials to access it.
</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,_July_31,_2019#Minutes"
title="GlueX TOF Meeting, July 31, 2019">the minutes
from the meeting on July 31</a>.
</p>
<p>Mark called attention to the item describing the nylon
bolts that will be used as physical stops to prevent the
vertically-oriented paddles from slipping. Paul wondered
if the Lucite shield could be made with an outline to
produce a marker (via the boundary between high and low
rate regions) of the physical position of the counters
so that slippage could be monitored in data. We
discussed the idea only briefly.
</p>
<h3><span class="mw-headline" id="Construction_Status">Construction
Status</span></h3>
<p>Paul gave us an update.
</p>
<ul>
<li> Jason Barlow and Edmundo Barriga were at the lab
last week. They tested all of the modules that will go
back into TOF array. A few had some pin-hole-sized
light leaks which were taped over. All modules are in
working order.</li>
<li> Fabrication is finishing up. Three are in need of
repair due to the ends of light guides that
inadvertently got buffed yielding weak glue joints.
The gluing stand does not accommodate modules with
PMTs attached; it is getting modified to do so.</li>
<li> The wooden boxes are being moved to the area where
they will receive the finished modules. Styrofoam is
getting cut. The details of the packing procedure are
being worked out.</li>
<li> The collars are complete and are ready to be
packed.</li>
<li> The estimate now is to initiate transport of the
modules in two weeks time.</li>
</ul>
<h3><span class="mw-headline"
id="Structure_of_TOF_II_software">Structure of TOF II
software</span></h3>
<p>We briefly discussed the plan to keep our software
backward compatible with the TOF I geometry while
implementing changes needed for TOF II.
</p>
<ul>
<li> Ashley described progress so far. She modified the
geometry in HDDS. The version of the TOF geometry used
will be controlled by the CCDB. Sean Dobbs has
modified halld_recon to key off of the number of
paddles in the TOF geometry to decide whether to
reconstruct the data as TOF I or TOF II.</li>
<li> Beni had a discussion with Mark on how to proceed
with the calibration software. They proposed that the
TOF II calibration be a independent set of code from
that developed for TOF II. That avoids a myriad of
if-then-else structures in the code.</li>
<li> These philosophies are not obviously in harmony. It
is not clear that they need to be, but discussion
should be had as soon as Sean returns from travel.</li>
</ul>
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