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<article id="node-1474952" class="node node-logentry article ia-n clearfix" role="article">
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<a href="https://logbooks.jlab.org/entry/4401888" rel="bookmark">RC Report for 20-Jun-2025</a>
</h1>
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<div class="date-vitals">
<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/4401888" class="lognumber" data-lognumber="4401888">4401888</a>. Submitted by <a href="https://logbooks.jlab.org/user/covrig">covrig</a> on <time datetime="2025-06-20T09:53:49-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1750424029&end_date=1750431229&book=HALOG">Fri, 06/20/2025 - 09:53</a></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>covrig</td></tr>
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<div class="logentry node-content">
<p>Key updates for the last 24h:<br />
- Beam delivery has been excellent, average trip rate 7/h over the past 24h (as reported at the 8am MCC meeting)<br />
- MCC to decide if they will attempt to repair 2L18 today, before the weekend. The issue: there is no head room for the SL. If any other cavity goes down in SL there may be significant down time for repairs.<br />
- Riad announced that the current laser spot is getting to the tail end of its lifetime and a spot move is planned over the next 7-10 days. Should we consider a Moller measurement before the spot move?<br />
- HCAL threshold changed to 15%, per Mark's recommendation, running at this setting since about 11am 19-Jun-25.<br />
- As for the previous 24h, during this period too most of the experimental down time was caused by DAQ crashes. If I count from BTAs we lost 6-7h of beam time over the past 24h due to DAQ! Can something be done about it?</p>
<p> - Total Accumulated Charge at Kin3 so far: 26.8 C (Goal: 100 C)<br />
- Total Accumulated Charge at Kin3 since June 18 Swing: 1.8 C</p>
<p>Run plan: Production on the 30 cm LH2 target cell (loop 1) at 22 µA, with the current settings for GEMs, ECAL and HCAL (unless subsystem experts want to change them).</p>
<p>Shift summaries:<br />
19-Jun-2025 D <a href="https://logbooks.jlab.org/entry/4401145">https://logbooks.jlab.org/entry/4401145</a><br />
19-Jun-2025 S <a href="https://logbooks.jlab.org/entry/4401359">https://logbooks.jlab.org/entry/4401359</a><br />
20-Jun-2025 O <a href="https://logbooks.jlab.org/entry/4401558">https://logbooks.jlab.org/entry/4401558</a></p>
<p>Shift BTA:<br />
19-Jun-2025 D <a href="https://logbooks.jlab.org/entry/4401507">https://logbooks.jlab.org/entry/4401507</a><br />
19-Jun-2025 S <a href="https://logbooks.jlab.org/entry/4401551">https://logbooks.jlab.org/entry/4401551</a><br />
20-Jun-2025 O <a href="https://logbooks.jlab.org/entry/4401818">https://logbooks.jlab.org/entry/4401818</a></p>
<p>RC Daily Meetings1:00 PM , via Zoom and in person in the counting house meeting room (2nd floor).<br />
No meeting planned for the weekend, unless something important comes up.</p>
<p>Zoom info:<br />
Join ZoomGov Meeting<br />
<a href="https://jlab-org.zoomgov.com/j/1616220064">https://jlab-org.zoomgov.com/j/1616220064</a><br />
Meeting ID: 161 622 0064<br />
Passcode: 314159</p>
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<div class="image-wrapper"><img view_mode="elog_email" class="image-style-plentybig" src="https://logbooks.jlab.org/files/styles/plentybig/public/2025/06/4401888/HABeamCurrent24h_9am-9am_19-20Jun25.jpg" width="960" height="442" alt="" title="Beam current and target high power heater, 9am-9am Jun 19-20 2025" /></div> </div>
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