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</style><article id="node-1119096" 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/4046061" rel="bookmark">RC summary for September 24</a>
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</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/4046061/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/4046061/delete?destination=email/send">Delete</a></li></ul></div>
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Lognumber <a href="https://logbooks.jlab.org/entry/4046061" class="lognumber" data-lognumber="4046061">4046061</a>. Submitted by <a href="https://logbooks.jlab.org/user/hovanes">hovanes</a> on <time datetime="2022-09-24T09:48:19-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1664023699&end_date=1664030899&book=HBLOG">Sat, 09/24/2022 - 09:48</a></time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hblog">HBLOG</a></td></tr></table></div>
<div class="logentry node-content">
<p>Last 24 hours we took very little production data. We switch from ND3 target to NH3 target during the day shift. The work started at around 2pm and we had 79% polarization at around 5pm. But we were unable to take any data at that time due to major accelerator problems. The experts that were trying to diagnose and fix the problem went home at around 2am. Currently there is expectation that the beam may be back during the swing shift, but there was no beam ETA given at the RC meeting since the problem is still being investigated. Also, the injector will be set up for 4-hall operations in preparation of Hall A startup since the accelerator is down anyway. </p>
<p>Day shift summary : <a href="https://logbooks.jlab.org/entry/4045677">https://logbooks.jlab.org/entry/4045677</a><br />
Swing shift summary : <a href="https://logbooks.jlab.org/entry/4045865">https://logbooks.jlab.org/entry/4045865</a><br />
Owl shift summary : <a href="https://logbooks.jlab.org/entry/4046001">https://logbooks.jlab.org/entry/4046001</a> </p>
<p>We took roughly 50M triggers on ND3 target before switching the target. PROD66_PIN just before the target switch is 17065.<br />
The plan is to set up the beam using the standard procedure starting with tuning beam to tagger and then switching to FCUP, with checking the beam profile with three wire scans according to the instructions in the manual.<br />
Then we will take data on NH3 target with positive polarization and HWP IN for about 24 hours, followed by a HWP switch to OUT position. </p>
<p>Hovanes.</p>
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