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</style><article id="node-838595" 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/3765633" rel="bookmark">Hall status and RC meeting</a>
</h1>
</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/3765633/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/3765633/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/3765633" class="lognumber" data-lognumber="3765633">3765633</a>. Submitted by <a href="https://logbooks.jlab.org/user/ciprian">ciprian</a> on <time datetime="2020-01-17T08:54:48-0500" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1579265688&end_date=1579272888&book=HALOG">Fri, 01/17/2020 - 08:54</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>Yesterday the Compton team managed to completely recover both the laser and photon detector (which required an access). During that access Chuck replaced the CO2 bottle for the SAM nitrogen purge. With the threat of beam having in the air we were ready to continue our program of calibrations and production (thanks Robert for picking up the OWL analysis shift on very short notice). Unfortunately we only managed to get only 1C since yesterday. Main reason for the lack of beam was a beam orbit server crash that could not be recovered and BLM trips at 9S related to Hall C delivery.</p>
<p>One important thing to note is the flow meter glitch: <a href="https://logbooks.jlab.org/entry/3765344">https://logbooks.jlab.org/entry/3765344</a> Heidi thinks it's related to an UPS. Unfortunately we will need to ramp down the R dipole to fix it. Jack suggests that we take the risk and plan to fix it Tue.</p>
<p>The plan for today:<br />
* at 9 AM the accelerator is going into one hour of RF recovery during which Heidi will take an escorted access to look at other things<br />
* at 10AM we are going into a 3h Beam Studies that is geared towards fixing the BLM trips for hall C<br />
* production until Monday day when we tentatively plan to do a Moller polarization measurement</p>
<p>The RC meeting will be held at 3 15 in the Counting House Conference room on the second floor. Remote connection:<a href="https://bluejeans.com/256205934">https://bluejeans.com/256205934</a></p>
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