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<p class="MsoNormal">Hello all, <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Let’s resume our software meeting at the usual time of 10:30 AM tomorrow:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Agenda :<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l2 level1 lfo3">Discussion of effect of Cu “filter” thickness/placement on GEM background and SBS resolution (Kip and all):<o:p></o:p></li></ul>
<ul style="margin-top:0in" type="disc">
<ul style="margin-top:0in" type="circle">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level2 lfo1">How much background reduction is possible with acceptable impact on resolution?
<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level2 lfo1">Discussion: what is the maximum acceptable impact on SBS resolution/efficiency that we can tolerate? <o:p></o:p></li></ul>
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo1">Summary of progress in trigger simulations/analysis and discussion of next steps (Andrew and students):<o:p></o:p></li><ul style="margin-top:0in" type="circle">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level2 lfo1">Trigger analysis of simulated elastic ep events—discussion of bug fixes/speed improvements<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level2 lfo1">Timeline for updating “generic” trigger analysis script to analyze PYTHIA/inelastic/elastic/other event types for rate estimation<o:p></o:p></li><ul style="margin-top:0in" type="square">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level3 lfo1">Limitations of PYTHIA at lower energies.<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level3 lfo1">Estimating the “missing” physics contributions to the rates without double-counting<o:p></o:p></li></ul>
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level2 lfo1">How to organize all the mapping information and lookup tables?
<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level2 lfo1">What additional information is needed for practical implementation in experiment?
<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level2 lfo1">What is the most convenient format of the information for DAQ configuration purposes?<o:p></o:p></li></ul>
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo1">(Time permitting): Discussion of calibration and commissioning strategies for calorimeters and trigger validation:
<o:p></o:p></li><ul style="margin-top:0in" type="circle">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level2 lfo1">Validation of trigger logic—verification of coincidence trigger efficiency versus ECAL and HCAL threshold via elastic yield comparison to Monte Carlo at low beam current<o:p></o:p></li><ul style="margin-top:0in" type="square">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level3 lfo1">Loose versus tight coincidence lookup, lookup tables for different kinematics and magnetic field settings<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level3 lfo1">GEM tracking and SBS optics need to be in “good enough” shape for clean elastic ep reconstruction with high efficiency to validate trigger.<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level3 lfo1">Comparison to Monte Carlo yield has to be done carefully due to effect of CH2 analyzer on polarimeter efficiency.
<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level3 lfo1">Prescaled ECAL singles triggers at low beam current to verify HCAL efficiency? <o:p></o:p></li></ul>
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level2 lfo1">Threshold calibration, rates versus threshold: what happens if/when the trigger rates are higher than we expect and we become DAQ-rate limited below the planned beam current?
<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level2 lfo1">Software readiness for rapid commissioning:
<o:p></o:p></li><ul style="margin-top:0in" type="square">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level3 lfo1">Calorimeter calibrations: timing and energy. Hardware/firmware/software-level gain matching. With cosmics and with beam.
<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level3 lfo1">Support scripts for rapid calorimeter calibration. What do we have? What do we need?
<o:p></o:p></li></ul>
</ul>
</ul>
<p class="MsoListParagraph" style="margin-left:1.5in"><o:p> </o:p></p>
<p class="MsoNormal">We’ll meet on Zoom as usual:<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><a href="https://jlab-org.zoomgov.com/j/1604707668?pwd=NW5BZFByampRb2ZMemtqdTNpZTNiZz09" title="https://jlab-org.zoomgov.com/j/1604707668?pwd=NW5BZFByampRb2ZMemtqdTNpZTNiZz09">https://jlab-org.zoomgov.com/j/1604707668?pwd=NW5BZFByampRb2ZMemtqdTNpZTNiZz09</a><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Agendas and minutes are being collected here: <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><a href="https://sbs.jlab.org/wiki/index.php/GEP_software_meeting_agendas/minutes" title="https://sbs.jlab.org/wiki/index.php/GEP_software_meeting_agendas/minutes">https://sbs.jlab.org/wiki/index.php/GEP_software_meeting_agendas/minutes</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">See you tomorrow! <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best regards,<o:p></o:p></p>
<p class="MsoNormal">Andrew<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Century",serif;color:black;mso-ligatures:none">Andrew Puckett<br>
Associate Professor, Physics Department<br>
University of Connecticut<br>
196 Auditorium Road, Unit 3046<br>
Storrs, CT 06269-3046<br>
Office phone: (860) 486-7137<br>
</span><span style="font-size:12.0pt;font-family:"Century",serif;mso-ligatures:none"><a href="https://puckett.physics.uconn.edu" title="https://puckett.physics.uconn.edu"><span style="color:#0563C1">https://puckett.physics.uconn.edu</span></a><span style="color:black"><br>
</span><a href="mailto:andrew.puckett@uconn.edu"><span style="color:#0563C1">puckett@jlab.org</span></a></span><o:p></o:p></p>
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