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</style><article id="node-792821" 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/3719881" rel="bookmark">RC Updated Friday Aug 16 (RC Meeting at 3:30)</a>
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</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/3719881/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/3719881/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/3719881" class="lognumber" data-lognumber="3719881">3719881</a>. Submitted by <a href="https://logbooks.jlab.org/user/cornejo">cornejo</a> on <time datetime="2019-08-16T13:58:20-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1565974700&end_date=1565981900&book=HALOG">Fri, 08/16/2019 - 13:58</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>
<div class="logentry node-content">
<p>During SWING we continued with 70 uA production on Pb#8, and then shortly transitioned to no target to check the Compton background spectra in anticipation of tomorrow's planned fiber amplifier replacement in the Compton. Afterwords, a passing storm caused interruptions in beam, causing ion chamber trips.</p>
<p>When beam returned crew was directed by Kent to do a "high current' (5 uA) spot check to make sure the raster was still the same as before. The rest of SWING and OWL relatively uneventful. OWL had only brief periods with no beam before 7 AM. Beam was stopped at 7 AM to cool down the hall in anticipation of Controlled Access for the Compton fiber amplifier replacement.</p>
<p>At noon the alarm handler went off because the flow rate to all magnets in both HRS had dropped to zero. The cause was an issue with the CHL (<a href="https://logbooks.jlab.org/entry/3719862">https://logbooks.jlab.org/entry/3719862</a>). I don't have much more information about it, other than that MCC called just now and said it would be about 4-5 hours of downtime.</p>
<p>Here is a summary of the work happening in the hall today.<br />
1) Dave, Amali and Caryn are working on installing the new fiber amplifier in the Compton laser hut.<br />
2) Jack et.al. has been adding additional shielding around various components.<br />
3) Jessie et. al. will work on implementing another possible solution to the tungsten water flow readback issues we experience whenever beam is on.<br />
4) If time allows, Jack wants to also replace MOSFETS in the HRS power supply platform (the low dose side).<br />
5) Bob went into the hall to move an ethernet cable so it bypasses the Netgear switch that caused a DAQ outage a few days ago. It now goes directly to the hall a network switch (<a href="https://logbooks.jlab.org/entry/3719863">https://logbooks.jlab.org/entry/3719863</a>)<br />
6) Adam and I went down to check the alignment of the photon detector with respect to the cylindrical Pb collimator immediately in front of it.</p>
<p>We will have the usual RC meeting today at 3:30 PM in the second floor of the Counting House. For those participating from remote, the following is the usual bluejeans info:</p>
<p>Bluejeans Meeting ID: 256 205 934<br />
Direct bluejeans link: <a href="https://bluejeans.com/256205934">https://bluejeans.com/256205934</a></p>
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