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</style><article id="node-1034531" 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/3961507" rel="bookmark">RC update Dec 12</a>
</h1>
</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/3961507/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/3961507/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/3961507" class="lognumber" data-lognumber="3961507">3961507</a>. Submitted by <a href="https://logbooks.jlab.org/user/ssanties">ssanties</a> on <time datetime="2021-12-12T11:05:40-0500" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1639321540&end_date=1639328740&book=HDLOG">Sun, 12/12/2021 - 11:05</a></time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hdlog">HDLOG</a></td></tr></table></div>
<div class="logentry node-content">
<ol><li>Last 24h:<ul><li>Compton Run on C at 50 nA (Runs 090505 - 090508) <a class="external autonumber" href="https://logbooks.jlab.org/entry/3960883" rel="nofollow">[https://logbooks.jlab.org/entry/3960883 ]</a> (Sasha)</li><li>Raw mode run 150 nA (090508-090509) (Sasha)</li><li>Low intensity run (090510-09512)</li><li>Continued C production running.</li></ul></li><li>Issues (Mainly the LV4 Sector in the BCAL)<ul><li>Swing shift: An alarm was reported on BCAL: low voltage: channel 4 shift crew turned back on the LV <a class="external autonumber" href="https://logbooks.jlab.org/entry/3961134" rel="nofollow">[https://logbooks.jlab.org/entry/3961134 ]</a>.</li><li>LV4 Sector issue<a class="external autonumber" href="https://logbooks.jlab.org/entry/3961273" rel="nofollow">[https://logbooks.jlab.org/entry/3961273 ]</a>: The shift workers found an empty block corresponding to the LV4 sector. After some investigation we found that the LV was off for that sector but no alarm was activated. They turned it on manually. Mark Dalton checked briefly after turning them back on and found that scalers and also the BCAL RootSpy occupancy are within expectations. He called the counting house and agreed with the shift takers that we were good to go. However there are some questions to solve yet. Hovanes looked into the problem and found that LV channel (namely the negative one) tripped at 18:24, and in a few seconds it also turned off the coupled positive channel as well <a class="external autonumber" href="https://logbooks.jlab.org/entry/3961134" rel="nofollow">[ttps://logbooks.jlab.org/entry/3961134]</a>. The LV channels were then turned back on individually and not with the botton that turns them on together (as one can see from the GUI in the log entry and in the MYA), which is not the right thing to do for the BCAL coupled LV channels. In such cases the LV channels can get turned off as if the operators deliberately turns them off and no alarm will be generated. The botton to turn these coupled channels back on was pushed at around 23:19.</li><li>During the owl and early riser shift alarms and tripping of the LV4 continue <a class="external autonumber" href="https://logbooks.jlab.org/entry/3961322" rel="nofollow">[https://logbooks.jlab.org/entry/3961322 </a>]</li><li>Minor issue. It seems that the logbook is not letting put entries from the CH and apparently that issue is also seen by other halls.</li></ul></li><li>Plans<ul><li>The shift crew is adviced to monitor closely the LV4 for the BCAL and everytime that we get an alarm or visually the LV4 is red, turn on the LV manually for those particular channels.</li><li>Continue running with C</li></ul></li></ol></div>
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