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</style><article id="node-1116035" 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/4043000" 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/4043000/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/4043000/delete?destination=email/send">Delete</a></li></ul></div>
<div class="date-vitals">
<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/4043000" class="lognumber" data-lognumber="4043000">4043000</a>. Submitted by <a href="https://logbooks.jlab.org/user/cyero">cyero</a> on <time datetime="2022-09-17T07:42:19-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1663411339&end_date=1663418539&book=HCLOG">Sat, 09/17/2022 - 07:42</a></time>. </p>
<p class="last-update">
Last updated on <time datetime="2022-09-17T07:43:47-0400" pubdate="pubdate">Sat, 09/17/2022 - 07:43</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">
<p>During Sep 16 Swing Shift, Ops was able to deliver beam to Hall C quickly. </p>
<p>A harp scan was done on with satisfactory results on:<br />
IHA3H07A --> <a href="https://logbooks.jlab.org/entry/4042622">https://logbooks.jlab.org/entry/4042622</a><br />
IHA3H07B --> <a href="https://logbooks.jlab.org/entry/4042625">https://logbooks.jlab.org/entry/4042625</a></p>
<p>Then we moved on to doing "Aluminum Hole" check, however,<br />
there was an issue with the target added NOT moving to the "Hole"<br />
position. We contacted target experts, and temporary procedure has been<br />
established</p>
<p>Instructions for moving the target to "Hole" ---> <a href="https://logbooks.jlab.org/entry/4042703">https://logbooks.jlab.org/entry/4042703</a></p>
<p>We verified motion to all other targets, except the "Hole" position. Currently<br />
issue is being diagnosed by Chris Keith / D. Meekins</p>
<p>MCC then decided they wanted to do Ion chamber procedure first with no target (rather than "Aluminum Hole" check),<br />
and so the beam was moved to "Home" (no target). For this procedure, they also require us to ramp SHMS magnets to zero<br />
(I would have preferred that SHMS be rotated away from beamline rather than ramping down magnets,<br />
assuming it has to do with magnets field affecting the beam downstream. But maybe this has not worked<br />
in the past?? Will try to follow up and ask about it.)</p>
<p>While MCC was sending beam for ion chamber calibrations, they informed of lost vacuum downstream<br />
of beamline (valve VBV3H08A closed) ---> <a href="https://logbooks.jlab.org/entry/4042671">https://logbooks.jlab.org/entry/4042671</a></p>
<p>As of 7:00 AM today, Hall C has gone to "Controlled Access" and techs have arrived at<br />
Counting House to diagnose this issue. </p>
<p>Once vacuum is re-established downstream beam line:<br />
1) MCC will continue to do Ion Chamber calibration<br />
2) Hall C will do Beam Checkout procedure followed by trigger checkout<br />
3) Begin CaFe special studies / production </p>
<p>We'll have brief RC meeting at 11 AM to discuss any outstanding issues:</p>
<p>Here is the zoom link:<br /><a href="https://jlab-org.zoomgov.com/j/1607100885?pwd=ZFBsRTFsYm5Zb0laZ0tyZXNjcEE0QT09">https://jlab-org.zoomgov.com/j/1607100885?pwd=ZFBsRTFsYm5Zb0laZ0tyZXNjcE...</a></p>
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