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</style><article id="node-913913" 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/3840932" rel="bookmark">RC Daily Update</a>
</h1>
</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/3840932/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/3840932/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/3840932" class="lognumber" data-lognumber="3840932">3840932</a>. Submitted by <a href="https://logbooks.jlab.org/user/cyero">cyero</a> on <time datetime="2020-09-04T09:21:55-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1599222115&end_date=1599229315&book=HCLOG">Fri, 09/04/2020 - 09:21</a></time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hclog">HCLOG</a></td></tr><tr><th>Entry Makers: </th><td>cyero</td></tr></table></div>
<div class="logentry node-content">
<b>Accelerator Status:</b>
<ul><li>Sep 03 Swing (yesterday): 1L19 component down time (~ 15:46 - 19:30) <a href="https://logbooks.jlab.org/entry/3840446">https://logbooks.jlab.org/entry/3840446</a> </li>
<li>Sep 04 Owl:
<ul><li>2L09 component out of HV (00:00 - 00:24)</li>
<li>Cavity Issues (no beam from 02:00 - 02:35)</li>
<li>Overall FSD trips ~35 trips/hr at 04:30-05:00 (highest during Owl)</li>
<li>As of 07:15, beam trips downward trend with < 20 trips/hr </li>
<li>Summary of Beam Current during Owl: <a href="https://logbooks.jlab.org/entry/3840898">https://logbooks.jlab.org/entry/3840898</a></li>
</ul></li>
</ul><b>General Hall C Updates:</b>
<ul><li> (Sep 03, Swing Shift):
<ul><li>Polarization of He3 target ~37.5 % @ 15:45 (close to 40% polarization threshold). </li>
<li>During 1L19 downtime incident, decided to change to Kin-C (HMS: -4.0 GeV/c, 20.0 deg) and Kin-Z (SHMS: -5.6 GeV/c, 18.0 deg ). <br />
to prepare for Pol He3 production data-taking. <a href="https://logbooks.jlab.org/entry/3840482">Spec_Angle_Change</a>, <a href="https://logbooks.jlab.org/entry/3840496">Spec_Momentum_Change</a></li>
<li>At ~19:30, 1L19 downtime incident closed.</li>
<li>Requested Harp Scans and checked beam profile. <a href="https://logbooks.jlab.org/entry/3840536">IHA3H07A</a>, <a href="https://logbooks.jlab.org/entry/3840542">IHA3H07B</a> </li>
<li>Checked for scraping of Pol He3 target cell at 5 uA. <a href="https://logbooks.jlab.org/entry/3840586">Pol_He3_scraping_test</a> </li>
<li>Commenced Pol He3 production data-taking at 25 uA (19:58). <a href="https://logbooks.jlab.org/entry/3840563">HMS_Start_of_Run</a>, <a href="https://logbooks.jlab.org/entry/3840562">SHMS_Start_of_Run</a> </li>
</ul></li></ul><b>Recent NMR/pNMR Measurements (After EPR calibration):</b><br />
Sep 03 (Day/Swing):
<ul><li> NMR: 15:45 | 37.5 % <a href="https://logbooks.jlab.org/entry/3840418">https://logbooks.jlab.org/entry/3840418</a></li>
<li> pNMR: 15:59 | 36.85 % <a href="https://logbooks.jlab.org/entry/3840435">https://logbooks.jlab.org/entry/3840435</a></li>
<li> NMR: 18:28 | 38.06 % <a href="https://logbooks.jlab.org/entry/3840504">https://logbooks.jlab.org/entry/3840504</a></li>
</ul>
Sep 04 (Owl):
<ul><li> NMR: 05:33 | 41.7 % <a href="https://logbooks.jlab.org/entry/3840819">https://logbooks.jlab.org/entry/3840819</a></li>
<li> pNMR: 05:33 | 57.2 % <a href="https://logbooks.jlab.org/entry/3840819">https://logbooks.jlab.org/entry/3840819</a></li>
</ul><b>Recent IHWP Changes:</b><br />
Sep 03 (Swing, as of 19:58) | IHWP = IN
Sep 04 (Owl, as of 04:00) | IHWP = OUT <a href="https://logbooks.jlab.org/entry/3840776">https://logbooks.jlab.org/entry/3840776</a>
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