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</style><article id="node-1380416" 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/4307368" rel="bookmark">RC Daily Update - May 18</a>
</h1>
</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/4307368/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/4307368/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/4307368" class="lognumber" data-lognumber="4307368">4307368</a>. Submitted by <a href="https://logbooks.jlab.org/user/ssanties">ssanties</a> on <time datetime="2024-05-18T11:42:51-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1716043371&end_date=1716050571&book=HCLOG">Sat, 05/18/2024 - 11:42</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>
<div class="logentry node-content">
<p>The last 24 hours have been challenging. The major incidents are:<br />
* SL cryo 2K cold box trip<br />
* ARC5A trip<br />
* 5th pass vertical separator trip<br />
For more information, refer to <a href="https://logbooks.jlab.org/entry/4307224">https://logbooks.jlab.org/entry/4307224</a></p>
<p>In summary, we lost the beam at about 1:30 PM yesterday and got it back today at about 8 AM.</p>
<p>Data taken:<br />
*KinC_x50_2 is being finished.</p>
<p>Plan for the next hours:<br />
*KinC_x36_3 will be next. This is the kinematic we could not take before due to the low HMS angle. We will have two passes of data for this kinematic, consisting of: 2 dummy, 6 deuterium, and 6 hydrogen runs, each 30 minutes long.<br />
*KinC_x60_3 will follow, during which we will perform the luminosity test on carbon.<br />
*Collect as much data as possible until 7 AM tomorrow.</p>
<p>High current test:<br />
The accelerator team has agreed to allow the high current test with deuterium and hydrogen: <a href="https://logbooks.jlab.org/entry/4307319">https://logbooks.jlab.org/entry/4307319</a><br />
This will depend on the absence of any major issues, and they will accommodate us accordingly. This test can happen at any point during the high current tests of the accelerator. Our plan is:<br />
* Silviu will oversee the test to ensure we get the data we need.<br />
* We will use anything above 30 μA, and the data saved will be EPICS data. No DAQ from the spectrometers is planned.</p>
<p>We will not be holding a meeting today.</p>
<p>Please contact me if you have any questions or concerns.</p>
<p>Nathaly Santiesteban</p>
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