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</style><article id="node-862613" 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/3789644" rel="bookmark">RC Update 2/22/2020</a>
</h1>
</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/3789644/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/3789644/delete?destination=email/send">Delete</a></li></ul></div>
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<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/3789644" class="lognumber" data-lognumber="3789644">3789644</a>. Submitted by <a href="https://logbooks.jlab.org/user/skbarcus">skbarcus</a> on <time datetime="2020-02-22T14:29:16-0500" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1582396156&end_date=1582403356&book=HALOG">Sat, 02/22/2020 - 14:29</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>skbarcus</td></tr></table></div>
<div class="logentry node-content">
<p>Dear Collaborators,</p>
<p>We will not be having a 3:15 pm meeting today. Overall we ran very well last night and collected a lot of data!</p>
<p>We discovered that the dpp was drifting yesterday afternoon and upon investigation it was determined to be due to the arc lock 2A being automatically engaged. This lock is now being monitored and MCC seems able to fix issues with this quickly. Devi also ran a detector alignment to be sure everything was still alright (see log 3789082). He also made a log entry (3789177) detailing what to do if dpp wanders during beam modulation. </p>
<p>LQ1 tripped at 22:45 and was recovered (log 3789239). It tripped again at 0:13 (log 3789304). </p>
<p>At 9:45 Silviu noticed that the P/CREX protect target GUI in epicsweb showed that it was disabled. Both the counting house and MCC showed that this system was still enabled. I confirmed on my own computer what Silviu saw on epicsweb. I contacted the software on-call who was able to confirm that MCC and epicsweb were indeed seeing different results in the GUI. The software expert said that MCC's GUI is correct and the system is properly engaged. They are not able to debug this over the weekend, and the developer in charge will be alerted Monday. For more detail see log entries 3789521 and 3789528 with follow-up entries 3789532 and 3789557.</p>
<p>At 11:30 IHWP changed from IN to OUT. </p>
<p>At 12:25 MCC called saying all of the RF cavities tripped off, and it'll take a while to get the beam back to the hall. MCC is currently still recovering from this event. We have asked if we can make a quick access for a Compton calibration if MCC can support this assuming it will not delay the restoration of beam. When beam restores Caryn is planning to test a new FFB mode and run several calibrations. </p>
<p>Outstanding Issues:</p>
<p>1. The mismatch in the epicsweb GUI for P/CREX target protect and the GUI in MCC cannot be addressed until Monday when the developer returns.</p>
<p>Best,<br />
Scott Barcus<br />
(current Hall A RC)</p>
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