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</style><article id="node-1102446" class="node node-logentry contextual-links-region article ia-n clearfix" role="article"><header class="node-header"><h1 class="node-title">
<a href="https://logbooks.jlab.org/entry/4029413" rel="bookmark">RC Report: Monday, August 15</a>
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</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/4029413/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/4029413/delete?destination=email/send">Delete</a></li></ul></div>
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Lognumber <a href="https://logbooks.jlab.org/entry/4029413" class="lognumber" data-lognumber="4029413">4029413</a>. Submitted by <a href="https://logbooks.jlab.org/user/mdiefent">mdiefent</a> on <time datetime="2022-08-15T17:49:09-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1660596549&end_date=1660603749&book=HCLOG">Mon, 08/15/2022 - 17:49</a></time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hclog">HCLOG</a></td></tr></table></div>
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<p><strong><span style="font-family: Helvetica; font-size: 12px;">Getting Ready for the Pass Change: RC Report August 14-15</span></strong><br style="font-family: Helvetica; font-size: 12px;" /><br style="font-family: Helvetica; font-size: 12px;" /><strong><span style="font-family: Helvetica; font-size: 12px;">Accelerator Status </span></strong></p><ul><li><span style="font-family: Helvetica; font-size: 12px;">Problem with bleed through to Hall B is significantly reduced after turning the vertical separator on. </span></li></ul><p><strong><span style="font-family: Helvetica; font-size: 12px;">Experimental Status</span></strong></p><ul><li><span style="font-family: Helvetica; font-size: 12px;">DAQ issues during owl shift (<a href="https://logbooks.jlab.org/entry/4029021">https://logbooks.jlab.org/entry/4029021</a>). </span></li><li><span style="font-family: Helvetica; font-size: 12px;">Preparation for the data taking in the Q2 = 2.12 GeV^2, W = 2.05 GeV, x = 0.39, high epsilon setting: Vladimir Berdnikov, Walter Kellner, Stanly Madlock, Jerry Nines, and Robert Wilkinson installed SHMS aerogel tray SP-15 (</span><span style="font-family: Helvetica; font-size: 12px;"><a href="https://logbooks.jlab.org/entry/4029238">https://logbooks.jlab.org/entry/4029238</a></span><span style="font-family: Helvetica; font-size: 12px;">). Their controlled access lasted four hours. </span></li><li><span style="font-family: Helvetica; font-size: 12px;">Regarding the problems with the temperature sensor for the HMS Q2 LH2 Coil 2: Heidi Fansler checked the sensor during the controlled access. We need to wait for the next Maintenance Day to fix the sensor (</span><span style="font-family: Helvetica; font-size: 12px;"><a href="https://logbooks.jlab.org/entry/4029182">https://logbooks.jlab.org/entry/4029182</a></span><span style="font-family: Helvetica; font-size: 12px;">). </span></li></ul><p><br style="font-family: Helvetica; font-size: 12px;" /><strong><span style="font-family: Helvetica; font-size: 12px;">Data taking for the Pion-LT experiment (E12-19-006) with a beam energy of 8.487 GeV</span></strong></p><ul><li><span style="font-family: Helvetica; font-size: 12px;">We have completed data taking for the: </span></li><li><span style="font-family: Helvetica; font-size: 12px;">Q2 = 3.85 GeV^2, W = 3.07 GeV, x = 0.31, low epsilon setting, </span></li><li><span style="font-family: Helvetica; font-size: 12px;">Q2 = 2.45 GeV^2, W = 3.20 GeV, x = 0.21, middle epsilon setting, </span></li><li><span style="font-family: Helvetica; font-size: 12px;">Heep-check coincidence runs, </span></li><li><span style="font-family: Helvetica; font-size: 12px;">SHMS calibration at negative polarity. </span></li></ul><span style="font-family: Helvetica; font-size: 12px;">After the aerogel change, we are taking data for the Q2 = 2.12 GeV^2, W = 2.05 GeV, x = 0.39, high epsilon setting. </span><p><br style="font-family: Helvetica; font-size: 12px;" /><strong><span style="font-family: Helvetica; font-size: 12px;">Instructions for shift crew </span></strong></p><ul><li><span style="font-family: Helvetica; font-size: 12px;">Regarding the insulating vacuum alarms for the SHMS: Please read the instructions from Heidi Fansler: </span><span style="font-family: Helvetica; font-size: 12px;"><a href="https://logbooks.jlab.org/entry/4028513">https://logbooks.jlab.org/entry/4028513</a></span><span style="font-family: Helvetica; font-size: 12px;"> </span></li><li><span style="font-family: Helvetica; font-size: 12px;">Regarding the temperature alarms for HMS Q2 LH2: Please disregard the alarm for now: </span><span style="font-family: Helvetica; font-size: 12px;"><a href="https://logbooks.jlab.org/entry/4029182">https://logbooks.jlab.org/entry/4029182</a></span><span style="font-family: Helvetica; font-size: 12px;"> </span></li></ul><p><br style="font-family: Helvetica; font-size: 12px;" /><strong><span style="font-family: Helvetica; font-size: 12px;">Planning </span></strong></p><ul><li><span style="font-family: Helvetica; font-size: 12px;">We will request the pass change for tomorrow, August 16, to start data taking with a beam energy of 6.399 GeV. </span></li><li><span style="font-family: Helvetica; font-size: 12px;">On Wednesday, August 17, we aim to change the aerogel tray back to SP-11. </span></li><li><span style="font-family: Helvetica; font-size: 12px;">Starting from August 18, we need volunteers for shifts: </span><span style="font-family: Helvetica; font-size: 12px;"><a href="https://misportal.jlab.org/mis/apps/physics/shiftSchedule/index.cfm?experimentRunId=HALLC-PIONLT-2022">https://misportal.jlab.org/mis/apps/physics/shiftSchedule/index.cfm?expe...</a></span><span style="font-family: Helvetica; font-size: 12px;"> </span></li><li><span style="font-family: Helvetica; font-size: 12px;">We will have a Hall C RC meeting on Tuesday, August 16, at 11:00 a.m. (EDT). </span></li></ul></div>
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