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</style><article id="node-680531" 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/3607638" rel="bookmark">RC daily update</a>
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</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/3607638/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/3607638/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/3607638" class="lognumber" data-lognumber="3607638">3607638</a>. Submitted by <a href="https://logbooks.jlab.org/user/efuchey">efuchey</a> on <time datetime="2018-10-11T09:47:44-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1539262064&end_date=1539269264&book=HALOG">Thu, 10/11/2018 - 09:47</a></time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/halog">HALOG</a></td></tr></table></div>
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<p>The past 24 hours were not good in terms of available beam. First, trips are numerous (15-20 trips an hour...) due to RF (~5/h), and MPS (10-15/h...). see <a href="https://logbooks.jlab.org/entry/3607594">https://logbooks.jlab.org/entry/3607594</a><br />
MCC wants to tackle the latter (hopefully with no impact on running) by adjusting BLMs and Ion chambers thresholds...<br />
Yesterday day: no major down time, but numerous trips.<br />
Yesterday swing:<br />
* magnet IOC (iocnl3mag) on north linac down (<a href="https://logbooks.jlab.org/entry/3607316">https://logbooks.jlab.org/entry/3607316</a>): 1h down time + ~30m trying to get back to 22.5 uA;<br />
* cryomodule 2L22 (south linac) IOC drop (<a href="https://logbooks.jlab.org/entry/3607341">https://logbooks.jlab.org/entry/3607341</a>): 1h40 down time.<br />
+ multiple beam trips...<br />
Today owl:<br />
* 5th pass RF separator (<a href="https://logbooks.jlab.org/entry/3607424">https://logbooks.jlab.org/entry/3607424</a>): incident lasted ~4 hours total, but we got some beam during the event: ~2h40min total down time<br />
* North linac PSS A chain drop (<a href="https://logbooks.jlab.org/entry/3607489">https://logbooks.jlab.org/entry/3607489</a>) 2hours down time.</p>
<p>As of now, we've been down for a solid 1h30, for issues with 2nd pass separation, and other various checks. MCC is sending testing beam.</p>
<p>No major issue on our end. The target issues we had yesterday owl (e.g. <a href="https://logbooks.jlab.org/entry/3606958">https://logbooks.jlab.org/entry/3606958</a>) have been tackled by target IOC reboot (<a href="https://logbooks.jlab.org/entry/3607273">https://logbooks.jlab.org/entry/3607273</a>). We had not had any such problems since then.<br />
Plan today is to keep taking as much beam as MCC sends us - hoping it will be more than yesterday.</p>
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