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</style><article id="node-924110" 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/3851126" rel="bookmark">RC Daily Update (final one)</a>
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</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/3851126/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/3851126/delete?destination=email/send">Delete</a></li></ul></div>
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Lognumber <a href="https://logbooks.jlab.org/entry/3851126" class="lognumber" data-lognumber="3851126">3851126</a>. Submitted by <a href="https://logbooks.jlab.org/user/covrig">covrig</a> on <time datetime="2020-09-18T12:33:37-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1600443217&end_date=1600450417&book=HALOG">Fri, 09/18/2020 - 12:33</a></time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/halog">HALOG</a></td></tr><tr><th>Entry Makers: </th><td>covrig</td></tr></table></div>
<div class="logentry node-content">
<p><strong>Summary: </strong></p><ul><li>Acc down 4+ hours due to Halls A+B drive lasers lost power</li><li>One last PITA scan and one last pedestal scan</li><li>CREX/Hall instrumentation has been behaving</li><li>ABU for the past 22h has been 41.5%</li></ul><p> </p><p> <strong>Notable events:</strong></p><p> Thu - Day</p><ul><li>PITA scan done</li><li>Acc down for more than 4 hours due to drive lasers in Halls A and B losing power, caused by RF <a href="https://logbooks.jlab.org/entry/3850453">https://logbooks.jlab.org/entry/3850453</a></li><li>ABU 2h / BNA 5.9h / BANU 0.1h</li></ul><p>Thu - Swing</p><ul><li>Unser scan (which also doubles as a current scan on C-1%) aborted after taking 3 clean beam current steps (50, 80 and 120 uA) due to beam instabilities</li><li>Due to beam intabilities decided to give up on the remainder of the raster area scan study and go into production on Ca-48</li><li>MCC cannot deliver 150uA with a reasonable trip rate, lowered Hall A current to 130 uA for the shift</li><li>Conmpleted a pedestal scan <a href="https://logbooks.jlab.org/entry/3850715 ">https://logbooks.jlab.org/entry/3850715 </a></li><li>BCM receiver check for Shujie with tune beam for a few minutes</li><li>ABU 4.2h / BNA 3.7h / BANU 0.6h</li></ul><p>Fri - Owl</p><ul><li>6 hours shift for CREX (10+ for Victoria and Siyu!), pretty good beam delivery overnight, high trip rate though </li><li>Beam increased to 140 uA Production on Ca-48 <a href="https://logbooks.jlab.org/entry/3851000 ">https://logbooks.jlab.org/entry/3851000 </a></li><li>ABU 3h / BNA 3h / BANU 0h</li></ul><p> </p><p><strong>Final Remarks</strong></p><ul><li>We are done with CREX, we have accummulated 481.36 C total charge, of which 382.56 C is Good charge, which is 81.91% of proposal!!!</li><li>List of prompt shutdown actions (thanks to Victoria and Siyu) <a href="https://logbooks.jlab.org/entry/3850998">https://logbooks.jlab.org/entry/3850998</a> <a href="https://logbooks.jlab.org/entry/3851070 ">https://logbooks.jlab.org/entry/3851070 </a></li><li>The target is warm <a href="https://logbooks.jlab.org/entry/3851097">https://logbooks.jlab.org/entry/3851097</a></li><li>Magnets are in Jack's hands now <a href="https://logbooks.jlab.org/entry/3851112">https://logbooks.jlab.org/entry/3851112</a></li><li>VDCs and GEMs will be available, Jack would like a heads up when we will be done with cosmics runs</li></ul><div> </div><p><strong>Last RC Daily Meeting at 3:30pm </strong></p><p> BlueJeans calling instructions:</p><p> Toll-Free Number (U.S.& Canada): 888-240-2560</p><p> International toll number: 408-740-7256</p><p> Bluejeans CODE: 256 205 934 </p><p> Bluejeans link: <a href="https://bluejeans.com/256205934">https://bluejeans.com/256205934</a></p><p> </p> </div>
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