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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/HDGeant4_Meeting,_May_21,_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">Minutes, HDGeant4 Meeting, May 21, 2019</span></h2>
<br>
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<p>Present: </p>
<ul>
<li> <b> JLab: </b> Alex Austregesilo, Thomas
Britton, Sean Dobbs, Tolga Erbora, Mark Ito
(chair), Justin Stevens, Simon Taylor, Beni
Zihlmann</li>
<li> <b> UConn: </b> Richard Jones</li>
</ul>
<p>There is a <a rel="nofollow" class="external text"
href="https://bluejeans.com/s/ytMon/"
moz-do-not-send="true">recording of this meeting</a>
on the BlueJeans site. Use your JLab credentials to
get 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/HDGeant4_Meeting,_April_23,_2019#Minutes"
title="HDGeant4 Meeting, April 23, 2019"
moz-do-not-send="true">the minutes from the April
23rd meeting</a>. The only point discussed was the
future of these meetings. We agreed that they should
go on with pretty much the same frequency and pretty
much the same set of topics as they have in the
past. Stay the course! </p>
<h3><span class="mw-headline" id="Issues_on_GitHub">Issues
on GitHub</span></h3>
<p>We went over <a rel="nofollow" class="external
text"
href="https://github.com/JeffersonLab/HDGeant4/issues"
moz-do-not-send="true">issued for HDGeant4</a> </p>
<ul>
<li> <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/HDGeant4/issues/110"
moz-do-not-send="true">Segfault</a> #110 opened
7 days ago by nsjarvis</li>
<li> <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/HDGeant4/issues/109"
moz-do-not-send="true">G4Exception crash after
Curve length mis-match</a> #109 opened 25 days
ago by nsjarvis</li>
<li> <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/HDGeant4/issues/108"
moz-do-not-send="true">Crash after
GetHadronicInteraction no model found</a> #108
opened 25 days ago by nsjarvis
<ul>
<li> There is a suspicion that these three
issues are related to the version of geometry
being used. We will follow up with nsjarvis.</li>
</ul>
</li>
<li> <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/HDGeant4/issues/107"
moz-do-not-send="true">Feature request -
progress indicator</a> #107 opened 27 days ago
by nsjarvis
<ul>
<li> We agreed that the classic HDGeant
logarithmic event count report would be good
for HDGeant4 as well.</li>
</ul>
</li>
<li> <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/HDGeant4/issues/105"
moz-do-not-send="true">Reading in # events and
source</a> #105 opened on Apr 19 by nsjarvis</li>
<li> <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/HDGeant4/issues/104"
moz-do-not-send="true">Run number read in from
two places is confusing</a> #104 opened on Apr
19 by nsjarvis</li>
<li> <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/HDGeant4/issues/103"
moz-do-not-send="true">Skip (in control.in) is
ignored</a> #103 opened on Apr 19 by nsjarvis</li>
<li> <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/HDGeant4/issues/102"
moz-do-not-send="true">Terminal cleanup?</a>
#102 opened on Apr 18 by mashephe
<ul>
<li> These four issues were discussed at the
last meeting. We have a plan for their
resolution.</li>
</ul>
</li>
<li> <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/HDGeant4/issues/93"
moz-do-not-send="true">Calorimeter timing
mismatch between g3 and g4</a> #93 opened on Feb
28 by aaust
<ul>
<li> Richard pointed out the mcsmear is not
operating on the recommended HDDM elements
being output by HDGeant4 for BCAL energy.
Until that change is made, comparisons can
only be done with obsolete quantities. He will
make the change in mcsmear and will push it as
a new branch of halld_sim. Alex and others can
then use the branch to repeat their studies.</li>
</ul>
</li>
<li> <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/HDGeant4/issues/89"
moz-do-not-send="true">Hit Energy Agreement</a>
#89 opened on Feb 26 by ReBarsotti
<ul>
<li> This issue is on hold until studies can be
repeated with the latest software.</li>
</ul>
</li>
</ul>
<h3><span class="mw-headline"
id="Possible_Issues_from_the_Collaboration_Meeting">Possible
Issues from the Collaboration Meeting</span></h3>
<p>We discussed various plots shown and talks given at
last week's <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX-Collaboration-May-2019"
title="GlueX-Collaboration-May-2019"
moz-do-not-send="true">Collaboration Meeting and
MC Comparison Workshop</a>. </p>
<ul>
<li> In Colin Gleason's talk on ηπ he showed
acceptance vs. cosθ<sub>GJ</sub> for both G3 and
G4. Differences were significant.</li>
<li> Mark's Software Talk, he showed a plot from
Peter Pauli showing β vs. p for K<sup>−</sup>'s
where there were large differences between G3 and
G4.</li>
<li> Many of the talks in the Workshop on Comparison
of Data and Monte Carlo showed G3 and G4
comparisons.</li>
</ul>
<p>We agreed to turn these into issues on hdgeant4
GitHub site. For the talks at the Workshop we
assigned an ambassador to each of the speakers
charged with contacting the speaker to see if they
have relevant issues: </p>
<table border="border">
<tbody>
<tr>
<th>Speaker </th>
<th> Ambassador </th>
</tr>
<tr>
<td> Mark Dalton </td>
<td> Sean </td>
</tr>
<tr>
<td> Simon Taylor </td>
<td> Simon </td>
</tr>
<tr>
<td> Amy Schertz </td>
<td> Justin </td>
</tr>
<tr>
<td> Naomi Jarvis </td>
<td> Mark </td>
</tr>
<tr>
<td> Sean Dobbs </td>
<td> Sean </td>
</tr>
</tbody>
</table>
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