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    Folks,<br>
    <br>
    Please find the minutes below and at<br>
    <br>
     
<a class="moz-txt-link-freetext" href="https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_April_29,_2015">https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_April_29,_2015</a><br>
    <br>
      -- Mark<br>
    _________________________________________________<br>
    <br>
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              lang="en">GlueX Offline Software Meeting<br>
              <span class="mw-headline" id="Minutes">Minutes</span><br>
              <br>
              Present:
              <br>
              <ul>
                <li> <b>CMU</b>: Curtis Meyer</li>
                <li> <b>FSU</b>: Aristeidis Tsaris</li>
                <li> <b>JLab</b>: Mark Ito (chair), David Lawrence,
                  Paul Mattione, Kei Moriya, Nathan Sparks, Justin
                  Stevens, Simon Taylor</li>
                <li> <b>NU</b>: Sean Dobbs</li>
              </ul>
              <br>
              <span class="mw-headline" id="Announcements">Announcements</span><br>
              <ul>
                <li> <b>Nightly build results on web</b>. Mark has put
                  the <a rel="nofollow" class="external text"
                    href="https://halldweb.jlab.org/nightly/nightly_build_errors.txt">summary
                    of nightly build errors and warnings</a> on the web.
                  He led us through the <a rel="nofollow"
                    class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2015-April/002015.html">email</a>
                  announcing it.</li>
                <li> <b>HDGeant now uses RF period in CCDB</b>. Paul
                  checked in a change such that HDGeant will look up the
                  bunch frequency from the CCDB when simulating
                  electromagnetic background. The current setting in the
                  database is 499 MHz.</li>
              </ul>
              <br>
              <span class="mw-headline"
                id="Review_of_minutes_from_April_15">Review of minutes
                from April 15</span><br>
              <br>
              We went over the <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_April_15,_2015#Minutes"
                title="GlueX Offline Meeting, April 15, 2015">minutes
                from last time</a>.
              <br>
              <br>
              David gave us an update on his Geant4 implementation. He
              as put in the FDC and FCAL and can reconstruct tracks in
              the FDC with resolution comparable with those found with
              HDGeant. He ran into an issue with multi-threading; a bug
              report has been submitted to the Geant4 Collaboration.
              <br>
              <br>
              <span class="mw-headline" id="Offline_Monitoring">Offline
                Monitoring</span><br>
              <br>
              Kei reported he has run over most of the files collected
              in the last week of data-taking. The volume of data is
              small, it only takes a few hours to run over everything.
              <br>
              <br>
              We then discussed doing a final run over the Fall data so
              that people can use the data to prepare for the
              collaboration meeting. There is a change to get the
              setting of the F1-TDC parameters from the CCDB that Justin
              checked in yesterday. There are also new TOF timing
              constants that we are not taking advantage of yet. In
              addition Lubomir also has new FDC alignment numbers. For
              all of these reasons a re-run seems desirable but time is
              running short to have the data available in time to be
              useful. We agreed on a launch time target at the end of
              the day on Friday.
              <br>
              <br>
              There was a bit of discussion of what data we have from
              the current run. Most of it is in run 2931, which is
              contained in just over 100 files and has about 75 million
              events. Data were taken in mode 7 with an FCAL-BCAL
              trigger.
              <br>
              <br>
              <span class="mw-headline"
                id="Spring_2015_Commissioning_Simulations">Spring 2015
                Commissioning Simulations</span><br>
              <br>
              Sean described the <a
href="https://halldweb.jlab.org/wiki/index.php/Spring_2015_Commissioning_Simulations"
                title="Spring 2015 Commissioning Simulations">conditions</a>
              he is proposing and solicited feedback. The software has
              been tagged but not released. Paul noted that the nominal
              position of the coherent peak is 3.4 GeV. The gxproj4
              account will be used to run the jobs.
              <br>
              <br>
              On a side note, Mark has put in a request to the Computer
              Center for a <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX-related_shared_accounts_on_the_JLab_CUE"
                title="GlueX-related shared accounts on the JLab CUE">gxproj5</a>
              account.
              <br>
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              Retrieved from "<a dir="ltr"
href="https://halldweb.jlab.org/wiki/index.php?title=GlueX_Offline_Meeting,_April_29,_2015&amp;oldid=66573">https://halldweb.jlab.org/wiki/index.php?title=GlueX_Offline_Meeting,_April_29,_2015&amp;oldid=66573</a>"</div>
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