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<article id="node-1493085" class="node node-logentry article ia-n clearfix" role="article">
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<a href="https://logbooks.jlab.org/entry/4420021" rel="bookmark">RC summary July 17 - July 18 Owl</a>
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<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/4420021" class="lognumber" data-lognumber="4420021">4420021</a>. Submitted by <a href="https://logbooks.jlab.org/user/hauenst">hauenst</a> on <time datetime="2025-07-17T09:12:23-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1752754343&end_date=1752761543&book=HBLOG">Thu, 07/17/2025 - 09:12</a></time>. </p>
<p class="last-update">
Last updated on <time datetime="2025-07-17T09:16:03-0400" pubdate="pubdate">Thu, 07/17/2025 - 09:16</time> </p>
<table class="field-vitals">
<tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hblog">HBLOG</a></td></tr>
<tr><th>Entry Makers: </th><td>hauenst</td></tr>
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<div class="logentry node-content">
<p>This is the RC summary for Day Shift July 17 to Owl shift July 18.</p><p>Yesterday during day shift accelerator pushed HallC to 45uA. We couldn't not see a significant increase in rates in the halo counters so we should be okay for bleedthrough issues for now. However, the general trip rate of the accelerator increase.</p><p>During Swing shift RF cavity 1L09 tripped and needed repair (<a href="https://logbooks.jlab.org/entry/4419606">https://logbooks.jlab.org/entry/4419606</a>). This took about 4h and got beam back before midnight.</p><p>During Owl shift smooth production with 325nA@He4.</p><p>Beam went off for maintenance at 6:45am and we are in controlled access.</p><p><span style="text-decoration: underline;"><br /></span></p><p><span style="text-decoration: underline;">ABU for last 24h</span></p><p>- 12h of ABUs ~ 50% efficiency,</p><p>- Total ABUs since April 5th: 1069+12=1081 --> 1081 / (75.5 * 24) = 59.7% </p><p>- Day 103 of 151 scheduled: 103/151 = 68.2%</p><p>- BANU: 0.6h due to DAQ reset, </p><p><span style="text-decoration: underline;">Plan for today</span></p><ul><li>Repair ECAL PMTs</li><li>RICH work</li><li>BAND TDC troubleshooting</li><li>Afternoon: Hall walkthrough</li><li>Beam is expected to be back in Swing. We will do Moller run first and then proceed with standard beam checkout</li></ul><p><span style="text-decoration: underline;">RC Meeting:</span></p><p>We will meet as usual today at 11:30 (EST) in CH Room 200C and online via Zoom</p><p>Zoom meeting ID: 160 570 5819</p><p>Zoom Link: <a href="https://jlab-org.zoomgov.com/j/1605705819#success">Link</a></p> </div>
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