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<article id="node-1445007" class="node node-logentry article ia-n clearfix" role="article">
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<h1 class="node-title">
<a href="https://logbooks.jlab.org/entry/4371947" rel="bookmark">RC Daily Summary</a>
</h1>
</header>
<div class="date-vitals">
<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/4371947" class="lognumber" data-lognumber="4371947">4371947</a>. Submitted by <a href="https://logbooks.jlab.org/user/sjjooste">sjjooste</a> on <time datetime="2025-05-09T10:52:33-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1746798753&end_date=1746805953&book=HBALERT&book=HBLOG&book=HBRUN">Fri, 05/09/2025 - 10:52</a></time>. </p>
<table class="field-vitals">
<tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hbalert">HBALERT</a> <a href="https://logbooks.jlab.org/book/hblog">HBLOG</a> <a href="https://logbooks.jlab.org/book/hbrun">HBRUN</a></td></tr>
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<div class="logentry node-content">
<h1 id="rc-summary-for-2025-05-09---fri-may-9">RC Summary for 2025-05-09 - Fri May 9</h1>
<p><strong>We will have the RC meeting at 11:30am EDT in the Counting House. <a href="https://jlab-org.zoomgov.com/j/1605705819#success">Zoom Link</a></strong></p>
<h2 id="recap-and-status">Recap and Status</h2>
<h4 id="thu-may-8-dayhttpslogbooksjlaborgentry4371333--swinghttpslogbooksjlaborgentry4371558">Thu May 8 <a href="https://logbooks.jlab.org/entry/4371333">DAY</a> & <a href="https://logbooks.jlab.org/entry/4371558">SWING</a></h4>
<ul>
<li>No beam, machine tuning in progress</li>
<li>Due to issues, forecast of beam delivery was gradually pushed back to OWL or DAY<ul>
<li>See also <a href="https://logbooks.jlab.org/entry/4371431">https://logbooks.jlab.org/entry/4371431</a>, <a href="https://logbooks.jlab.org/entry/4371561">https://logbooks.jlab.org/entry/4371561</a>, <a href="https://logbooks.jlab.org/entry/4371643">https://logbooks.jlab.org/entry/4371643</a>, and <a href="https://logbooks.jlab.org/entry/4371654">https://logbooks.jlab.org/entry/4371654</a></li></ul></li>
</ul>
<h4 id="fri-may-8-owlhttpslogbooksjlaborgentry4371698">Fri May 8 <a href="https://logbooks.jlab.org/entry/4371698">OWL</a></h4>
<ul>
<li>Original plan from MCC was to bring up Hall A first</li>
<li>Due to issues communicating with one of the Hall A harps they decided around 2:30am to switch gears and send beam to B&D <ul>
<li><a href="https://logbooks.jlab.org/entry/4371731">https://logbooks.jlab.org/entry/4371731</a></li></ul></li>
<li>Started full beam restoration around 4am<ul>
<li><a href="https://logbooks.jlab.org/entry/4371778">iochlb went down</a> during initial harp scans - likely storm related</li>
<li>Required <a href="https://logbooks.jlab.org/entry/4371777">degaussing and hysteris of tagger magnet</a> which delayed first phase of restoration somewhat</li>
<li>Had to redo some scans due to degaussing and MCC touching the beam parameters, but all looked good by 6:20am (<a href="https://logbooks.jlab.org/entry/4371796">2c21</a> and <a href="https://logbooks.jlab.org/entry/4371795">Tagger/2c24a</a>)</li>
<li>Switched to Moller after harp scans, Moller GUI got stuck during initial configuration, fixed by Nathan, results looking good (<a href="https://logbooks.jlab.org/entry/4371698">negative</a> and <a href="[https://logbooks.jlab.org/entry/4371817](https://logbooks.jlab.org/entry/4371817)">positive</a> ))<ul>
<li><a href="[https://logbooks.jlab.org/entry/4371821](https://logbooks.jlab.org/entry/4371821)">Error ending Moller run</a></li></ul></li>
<li>Final phase of beam restoration started and handed over to DAY</li></ul></li>
</ul>
<h4 id="fri-may-8-start-of-dayhttpslogbooksjlaborgentry4371841">Fri May 8 start of <a href="https://logbooks.jlab.org/entry/4371841">DAY</a></h4>
<ul>
<li>Beam restoration complete, harp scans looking beautuful (<a href="[https://logbooks.jlab.org/entry/4371838](https://logbooks.jlab.org/entry/4371838 )">2H01</a>, <a href="https://logbooks.jlab.org/entry/4371849">Tagger/2C24a</a>), and <a href="https://logbooks.jlab.org/entry/4371844">2C21</a>)</li>
<li>Careful transition to production: 30nA runs + fill target</li>
<li>Switch to production around 9:20am - 325nA runs on 4-He (100M event runs)</li>
</ul>
<h2 id="game-plan">Game Plan</h2>
<ul>
<li><a href="https://wiki.jlab.org/clas12-run/index.php/Run_Group_L#tab=Short_Term_Schedule">Short Term Schedule</a></li>
<li>Production runs with He-4 until Wednesday, aim for 100M events<ul>
<li>Perform Hall A bleed-through test for ~5 minutes once Hall A is in stable running conditions with 20µA beam</li></ul></li>
<li>Wednesday start ALERT repairs during SAD</li>
</ul>
<h2 id="bta">BTA</h2>
<ul>
<li>320.0 ABU hours since April 5th. 320.0/(68.5 x 24) = 19.5%</li>
<li>We are on day 34 of 137 scheduled days: 34/137 = 24.8%</li>
<li>BANU: 0.7 (Moller runs)</li>
</ul>
<h2 id="outstanding-major-tasks">Outstanding Major Tasks</h2>
<ul>
<li>Repairs planned for Wednesday, May 14th:<ul>
<li>ATOF module 7 (Whitney Armstrong)</li>
<li>AHDC wire repair (Raphael Dupre)</li>
<li>Draft of repair plans is available to all relevant people to make sure the repairs follow proper procedures and to ensure smooth execution and minimal downtime.</li></ul></li>
<li>Faraday Cup Vacuum (TBD)</li>
</ul>
<h2 id="run-summary">Run Summary</h2>
<ul>
<li>Ongoing run 21781 on He-4</li>
</ul>
<h2 id="links">Links</h2>
<ul>
<li><a href="https://jlab-org.zoomgov.com/j/1605705819#success">RC Meeting Zoom Link</a></li>
<li><a href="https://wiki.jlab.org/clas12-run/index.php/Run_Group_L">ALERT/RG-L Wiki</a></li>
<li><a href="https://wiki.jlab.org/clas12-run/index.php/Run_Group_L#:~:text=General-,Logbook,-Shift%20Schedule">Hall B Logbook</a></li>
<li><a href="https://wiki.jlab.org/clas12-run/index.php/Run_Group_L#tab=Short_Term_Schedule">Short Term Schedule</a></li>
</ul> </div>
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