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    <p>Dear Colleagues,</p>
    <p>We have completed an analysis launch over this low energy data
      set. It was done with exactly the same software version stack as
      the reconstruction and included all reactions that are currently
      under study to extract low energy cross sections.</p>
    <p>Please fine the merged trees here:</p>
    <p>/cache/halld/RunPeriod-2018-08/analysis/ver00/</p>
    <p>Best regards,</p>
    <p>Alex</p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 5/3/19 5:20 PM, Alexander
      Austregesilo wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:1A1F9954-B46D-4DDA-8630-29EED4EE4C35@jlab.org">
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      Dear Collaborators,<br class="">
      <br class="">
      We just completed a full reconstruction launch of the so-called
      low energy data we recorded in Fall 2018. For this data set, we
      measured the flux for photon energies between 3 and 6 GeV in order
      to compare cross sections with previous measurements. In addition,
      the coherent peak was shifted down to 7 GeV.
      <div class=""><br class="">
      </div>
      <div class="">We used the halld_recon tag 'recon-2018_08-ver00’.</div>
      <div class=""><br class="">
        The 1200 REST files are can be found on the cache disk:<br
          class="">
        <br class="">
        /cache/halld/RunPeriod-2018-08/recon/ver00/REST/<br class="">
        <br class="">
        For realistic background in simulations, we extracted the random
        triggers and converted the signals to hddm:<br class="">
        /cache/halld/RunPeriod-2018-08/recon/ver00/converted_random/<br
          class="">
        <br class="">
        The histograms and efficiency trees can be found here:<br
          class="">
        /cache/halld/RunPeriod-2018-08/recon/ver00/{hists,tree*}<br
          class="">
        <br class="">
        A subfolder with merged histograms and trees is included in each
        folder.<br class="">
        <br class="">
        The results are also visible on the usual monitoring web-pages:<br
          class="">
        <br class="">
        <a
          href="https://halldweb.jlab.org/data_monitoring/Plot_Browser.html"
          class="" moz-do-not-send="true">https://halldweb.jlab.org/data_monitoring/Plot_Browser.html</a><br
          class="">
        <a
href="https://halldweb.jlab.org/cgi-bin/data_monitoring/monitoring/runBrowser.py"
          class="" moz-do-not-send="true">https://halldweb.jlab.org/cgi-bin/data_monitoring/monitoring/runBrowser.py</a><br
          class="">
        <a
href="https://halldweb.jlab.org/cgi-bin/data_monitoring/monitoring/versionBrowser.py"
          class="" moz-do-not-send="true">https://halldweb.jlab.org/cgi-bin/data_monitoring/monitoring/versionBrowser.py</a> <br
          class="">
        <br class="">
        Best regards,<br class="">
        Alex</div>
      <br>
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