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<article id="node-1500534" class="node node-logentry article ia-n clearfix" role="article">
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<a href="https://logbooks.jlab.org/entry/4427470" rel="bookmark">RC Summary July 25 - July 26 Owl</a>
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Lognumber <a href="https://logbooks.jlab.org/entry/4427470" class="lognumber" data-lognumber="4427470">4427470</a>. Submitted by <a href="https://logbooks.jlab.org/user/schmidta">schmidta</a> on <time datetime="2025-07-26T09:55:26-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1753534526&end_date=1753541726&book=HBLOG">Sat, 07/26/2025 - 09:55</a></time>. </p>
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<tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hblog">HBLOG</a></td></tr>
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<p>This is the RC summary for Day Shift July 25 through Owl shift July 26.</p>
<p>This was another day of smooth running. The beam was good, and only a few DAQ/HV issues on our end, which were quickly resolved.<br />
- 7/25 day shift summary: <a href="https://logbooks.jlab.org/entry/4426545">https://logbooks.jlab.org/entry/4426545</a><br />
- 7/25 swing shift summary: <a href="https://logbooks.jlab.org/entry/4426847">https://logbooks.jlab.org/entry/4426847</a><br />
- 7/26 owl shift summary: <a href="https://logbooks.jlab.org/entry/4427126">https://logbooks.jlab.org/entry/4427126</a></p>
<p>At the time of this writing, there are two issues that I note here:<br />
- We have lost comms to EC sector 2 HV. This doesn't seem to be affecting the data taking. Nathan is currently working to resolve the issue. See: <a href="https://logbooks.jlab.org/entry/4427418">https://logbooks.jlab.org/entry/4427418</a><br />
- The accelerator status is currently returning a proxy wide. This is site wide, not just Hall B. This issue was raised at the morning PD/RC meeting. </p>
<p>The plan for the first pass separator test on Tuesday is coming into focus. Work will begin at 10 AM, and accelerator estimates that beam will be interrupted for 1-2 hours starting about 10:30 AM. We will use this time to switch targets from helium-4 to hydrogen.</p>
<p>ABU for last 24h</p>
<p>- 18.0h of ABUs ~ 75% efficiency,</p>
<p>- Total ABUs since April 5th: 1190.7+18.0=1208.7 --> 1208.7 / (75.5 * 24) = 66.7%</p>
<p>- Day 112 of 151 scheduled: 112/151= 74.2%</p>
<p>- BANU: 1.3h almost entirely due to ATOF HV and DAQ issues.</p>
<p>Plan for today:<br />
* Production on He with 325nA</p>
<p>RC meeting:</p>
<p>We will not have an RC meeting today or tomorrow. If any issues arise, please pick up the phone and call me, any hour: 757-575-7540.</p>
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