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</style><article id="node-1142865" 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/4069829" rel="bookmark">RC summary Oct 26, 2022</a>
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</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/4069829/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/4069829/delete?destination=email/send">Delete</a></li></ul></div>
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Lognumber <a href="https://logbooks.jlab.org/entry/4069829" class="lognumber" data-lognumber="4069829">4069829</a>. Submitted by <a href="https://logbooks.jlab.org/user/shujie">shujie</a> on <time datetime="2022-10-26T09:45:27-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1666788327&end_date=1666795527&book=HCLOG">Wed, 10/26/2022 - 09:45</a></time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hclog">HCLOG</a></td></tr></table></div>
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<p>Oct 25-26, 2022</p>
<p>Hall C had very good beam in the last 24 hours though sometimes we got 50uA when asking for 60. Only a small MCC beam down due to an LIU fault. We are expecting to finish this SHMS angle late today. So an escorted access is planned this afternoon to reboot the SHMS angle camera in order to rotate SHMS remotely. There will be ~4hr RF recovery tomorrow, hall will be in control access. Please let the new RC know if you need an access.</p>
<p>According to runplan our next task is boiling and rates study which requires stable beam up to 60uA, which seems to be an issue in the past two days. We will discuss if an alternative plan is needed at the RC meeting.</p>
<p>During day shift, shift worker noticed that the energy lock was off and called MCC to bring it back <a href="https://logbooks.jlab.org/entry/4068686">https://logbooks.jlab.org/entry/4068686</a><br />
There was once when the target was masked and moving, the system suddenly jumped to "do not move" . According to MCC they somehow lost the "mask" status for a second because of beam trip. It quickly recovered and didn't interrupt the target motion. <a href="https://logbooks.jlab.org/entry/4068685">https://logbooks.jlab.org/entry/4068685</a><br />
Dave Mack came and tested UNSER connections in counting house for possible crosstalk /grounding. Everything looks fine but the BCM05 temperature still makes spikes when moving target. More investigation will be done tomorrow during RF recovery.<a href="https://logbooks.jlab.org/entry/4068738">https://logbooks.jlab.org/entry/4068738</a></p>
<p>CODA crash was monitored overnight as suggested by Bob <a href="https://logbooks.jlab.org/entry/4069728">https://logbooks.jlab.org/entry/4069728</a><br />
The Owl shift workers noticed the SHMS NGC mix neon fraction shows 0 in alarm handler but all other quantities are good. Casey and Dave suggested that the readback needs a hard reset. Not urgent, can be done tomorrow during control access.<a href="https://logbooks.jlab.org/entry/4069438">https://logbooks.jlab.org/entry/4069438</a></p>
<p>HMS Dipole NMR frequently loses lock. Very annoying.</p>
<p>We will have 11am RC meeting as usual on second floor of counting house and on ZOOM:<br /><a href="https://hallcweb.jlab.org/wiki/index.php/October_25,_2022">https://hallcweb.jlab.org/wiki/index.php/October_25,_2022</a></p>
<p>Zoom link:<br />
Join ZoomGov Meeting<a href="https://jlab-org.zoomgov.com/j/1607100885?pwd=ZFBsRTFsYm5Zb0laZ0tyZXNjcE">https://jlab-org.zoomgov.com/j/1607100885?pwd=ZFBsRTFsYm5Zb0laZ0tyZXNjcE</a>...</p>
<p>Meeting ID: 160 710 0885<br />
Passcode: 595071</p>
<p>It has been a smooth week with 64% efficiency thanks to the support from MCC, Hall C techs and engineers, and shift workers.<br />
Narbe Kalantarians will take over after 1:30 MCC meeting. Good luck!</p>
<p>Bests,<br />
Shujie (Hall C RC)</p>
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