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</style><article id="node-916045" 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/3843064" 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/3843064/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/3843064/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/3843064" class="lognumber" data-lognumber="3843064">3843064</a>. Submitted by <a href="https://logbooks.jlab.org/user/cyero">cyero</a> on <time datetime="2020-09-07T09:34:32-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1599482072&end_date=1599489272&book=HCLOG">Mon, 09/07/2020 - 09:34</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 06/07 Swing/Owl (yesterday, today):
<ul><li> RF cavity 2L11-1 CWWT fault not clearing. Cavity was bypassed. (17:24 - 17:48 ) <a href="https://logbooks.jlab.org/entry/3842543">2L11-1_bypassed</a> </li>
<li> RSEP9A and ARC9A shunt mismatch (6:12 - ??). <a href="https://logbooks.jlab.org/entry/3842901">RSEP9A_downtime</a> </li>
</ul></li>
<li>Sep 07 Day (today):
<ul><li> As of 8:45, downtime due to RSEP9A and ARC9A shunt mismatch has been closed. Beam restored to Hall C at ~9:00 </li>
<li> 9:00 MCC morning meeting update: The PD (Jay) informed accelerator beam studies (tomorrow) Sep 08 Swing 16:30 - 19:30 with beam restoration expected at ~ 20:00.
MCC will not be able to support RadCon access tomorrow for Halls B/C during Swing Shift.</li>
</ul></li>
</ul><b>General Hall C Updates:</b>
<ul><li> Sep 06/07 Swing/Owl (yesterday, today):
<ul><li> Mingyu Chen updated the TO training slides with procedure for fitting pNMR, as there were issues with fitting program. See log-entry: <a href="https://logbooks.jlab.org/entry/3842395">pNMR_TO_update</a> </li>
<li> d2n production data-taking continued during Sep 06 Swing, and at 22:04, IHWP = OUT, and will take ~8 hrs of "beam-on-target" </li>
<li> Hall C beam energy drifted 1-2 MeV since Hall A Septum magnet tripped at ~2:30 (Sep 07 Owl). The effect on beam polarization seems to be negligible at first glance, but will need
to confirm with d2n spokespeople. <a href="https://logbooks.jlab.org/entry/3842953">HALLC:p_excursions</a> </li>
<li> Beam Current Hitory during Sep 06/07 Swing/Owl: <a href="https://logbooks.jlab.org/entry/3842753">Sep06_Swing</a>, <a href="https://logbooks.jlab.org/entry/3843010">Sep07_Owl</a> </li>
</ul></li>
<li> Sep 07 Day (today):
<ul><li>Beam restored to Hall C at ~ 9:00. Beam profile checks. <a href="https://logbooks.jlab.org/entry/3843034">IHA3H07A</a>, <a href="https://logbooks.jlab.org/entry/3843040">IHA3H07B</a> </li>
<li>d2n production data-taking at IHWP = OUT will resume after beam profile checks / Pol He3 scraping checks are concluded. We have collected ~358.3 min (5.97 hrs) of "beam-on-target" data as of end of Sep 07 Owl.
We still need ~121.7 min. of "beam-on-target" data.</li>
</ul></li>
</ul><b>Recent NMR/pNMR Measurements:</b><br />
Sep 06/07 (Swing/Owl):
<ul><li> NMR: 04:00 | 41.3 % <a href="https://logbooks.jlab.org/entry/3842500">https://logbooks.jlab.org/entry/3842500</a></li>
<li> pNMR: 04:00 | 67.6 % <a href="https://logbooks.jlab.org/entry/3842500">https://logbooks.jlab.org/entry/3842500</a></li>
<li> NMR: 21:28 | 40.7 % <a href="https://logbooks.jlab.org/entry/3842655">https://logbooks.jlab.org/entry/3842655</a></li>
<li> pNMR: 21:28 | 39.5 % <a href="https://logbooks.jlab.org/entry/3842655">https://logbooks.jlab.org/entry/3842655</a></li>
<li> NMR: 02:07 | 39.9 % <a href="https://logbooks.jlab.org/entry/3842793">https://logbooks.jlab.org/entry/3842793</a></li>
<li> pNMR: 02:07 | 41.7 % <a href="https://logbooks.jlab.org/entry/3842793">https://logbooks.jlab.org/entry/3842793</a></li>
</ul>
Sep 07 (Day):
<ul><li> NMR: 07:06 | 39.5 % <a href="https://logbooks.jlab.org/entry/3842931">https://logbooks.jlab.org/entry/3842931</a></li>
<li> pNMR: 07:06 | 41.0 % <a href="https://logbooks.jlab.org/entry/3842931">https://logbooks.jlab.org/entry/3842931</a></li>
</ul><b>Recent IHWP Changes:</b><br /><ul><li>Sep 03 (Swing, as of 19:58) | IHWP = IN </li>
<li>Sep 04 (Owl, as of 04:00) | IHWP = OUT <a href="https://logbooks.jlab.org/entry/3840776">https://logbooks.jlab.org/entry/3840776</a> </li>
<li>Sep 04 (Day, as of 12:01) | IHWP = IN <a href="https://logbooks.jlab.org/entry/3841011">https://logbooks.jlab.org/entry/3841011</a> </li>
<li>Sep 05 (Day, as of 14:55) | IHWP = OUT <a href="https://logbooks.jlab.org/entry/3841696">https://logbooks.jlab.org/entry/3841696</a> </li>
<li>Sep 06 (Owl, as of 07:00) | IHWP = IN <a href="https://logbooks.jlab.org/entry/3842175">https://logbooks.jlab.org/entry/3842175</a> </li>
<li>Sep 06 (Swing, as of 22:04) | IHWP = OUT <a href="https://logbooks.jlab.org/entry/3842667">https://logbooks.jlab.org/entry/3842667</a> </li>
</ul><p>
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