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<article id="node-1446917" class="node node-logentry article ia-n clearfix" role="article">
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<a href="https://logbooks.jlab.org/entry/4373857" rel="bookmark">RC Update - May 12</a>
</h1>
</header>
<div class="date-vitals">
<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/4373857" class="lognumber" data-lognumber="4373857">4373857</a>. Submitted by <a href="https://logbooks.jlab.org/user/chandan">chandan</a> on <time datetime="2025-05-12T12:30:54-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1747063854&end_date=1747071054&book=HALOG">Mon, 05/12/2025 - 12:30</a></time>. </p>
<p class="last-update">
Last updated on <time datetime="2025-05-12T12:37:04-0400" pubdate="pubdate">Mon, 05/12/2025 - 12:37</time> </p>
<table class="field-vitals">
<tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/halog">HALOG</a></td></tr>
<tr><th>Entry Makers: </th><td>chandan</td></tr>
</table>
</div>
<div class="logentry node-content">
Here are some notable things that have happened since yesterday, and the short-term run plan:
<ul>
<li> Yesterday, the day shift went without any data. However, MCC sent 10 uA tune and CW beams and performed Harp scans. <a href="https://logbooks.jlab.org/entry/4373069"> Yesterday Day shift summary </a>, <a href="https://logbooks.jlab.org/entry/4373240"> IHA1H04B Harp </a>, <a href="https://logbooks.jlab.org/entry/4373241"> IHA1H04A Harp </a>.</li>
<li> During the yesterday's Swing shift, we didn't have any data. Here is the <a href="https://logbooks.jlab.org/entry/4373287"> Swing Shift Summary </a>. </li>
<li> Harp Scans were performed at the beginning of the owl shift. The beam size was acceptable <a href="https://logbooks.jlab.org/entry/4373417"> Harp Scans </a>. </li>
<li> Beam centering and raster checkout were performed before moving to the LH2 target and start production at around 4 am. <a href="https://logbooks.jlab.org/entry/4373392"> Owl Shift Summary </a>.</li>
<li> We had the following three issues and those needed access into the Hall. We requested access around 11 pm and all the issues are solved. </li>
<li> The owl shift workers noticed a blank section in the ECal Cluster position distribution. Remote resetting didn't work. Solved after access.</li>
<li> The GEM Layer 1 was having issues with missing hits. Ching-Him and Ibrahim worked on this and they hope that will help. Taking pedestal data to confirm that.</li>
<li> ECal one AC unit was off. Don turned it on during access<a href="https://logbooks.jlab.org/entry/4373819"> ECal AC unit reset </a>. </li>
</ul>
<br />
Updates from 8 am MCC meeting:
<ul>
<li> MCC decided to run only beam to A, B, and C (avoiding the regular RF separator, and going ahead with horizontal magnetic beam separation.)</li>
<li> They plan to meet at 9 am to discuss the path forward to solve. Hopefully, we will get an update on this at tomorrow's RC meeting.</li>
</ul>
<br />
Short term run plan:<br />
<ol>
<li>Take 8 hours of data with 5uA beam on LH2 - ongoing</li>
<li>Take 8 hours of data with 10uA beam on LH2.</li>
</ol>
<br />
We will have a regular RC meeting at 1:00 pm today in the CH conference room.
People can join remotely via:
<br />
<a href="https://jlab-org.zoomgov.com/j/1616220064"> Zoom link </a>
<br />
Meeting ID: 161 622 0064
<br />
Passcode: 314159
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