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<article id="node-1477667" class="node node-logentry article ia-n clearfix" role="article">
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<a href="https://logbooks.jlab.org/entry/4404603" rel="bookmark">Hall C, RC Report, Wednesday June 24, 2025</a>
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<div class="date-vitals">
<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/4404603" class="lognumber" data-lognumber="4404603">4404603</a>. Submitted by <a href="https://logbooks.jlab.org/user/hdbhatt">hdbhatt</a> on <time datetime="2025-06-24T09:53:19-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1750769599&end_date=1750776799&book=HCLOG">Tue, 06/24/2025 - 09:53</a></time>. </p>
<p class="last-update">
Last updated on <time datetime="2025-06-24T10:17:28-0400" pubdate="pubdate">Tue, 06/24/2025 - 10:17</time> </p>
<table class="field-vitals">
<tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hclog">HCLOG</a></td></tr>
<tr><th>Entry Makers: </th><td>hdbhatt</td></tr>
</table>
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<div class="logentry node-content">
<p>During the day shift yesterday, the accelerator was down for about 2.5 hrs, and data was collected for 4.26 hours. The beam remained stable throughout the swing shift, allowing for 6.67 hours of data collection. However, starting at 4:45 AM this morning during the owl shift, the accelerator went down due to a loss of chilled water, with 3.64 hours of data collected before the interruption.</p>
<p>Total data collected (ABU) during last 24 hrs is about 15.4 hrs.</p>
<p>There were 2 minor issues of coda crash during last 24 hrs and were reset. <a href="https://logbooks.jlab.org/entry/4404250">https://logbooks.jlab.org/entry/4404250</a>, <a href="https://logbooks.jlab.org/entry/4403913">https://logbooks.jlab.org/entry/4403913</a></p>
<p>Tomorrow, Wednesday starting 7 am, there will be Beam Studies and RF recovery. Beam downtime is expected to be short.</p>
<p>===================<br />
Run Plan for a few days starting today:<br />
===================<br />
In order to take data on LH2 target, we need to empty the existing LD2 target and fill in LH2.<br />
Dave Meekins will start the target work soon.</p>
<p> Tuesday, June 24 (morning, ~10:00 AM):<br />
Controlled Access<br />
Empty LD2 target (Dave Meekins)<br />
We will take data on Carbon single foil while waiting on the empty target (Beam Current 0.5 uA)<br />
We will take empty target data overnight (until Wednesday morning) with Beam current: up to 2 µA</p>
<p> Wednesday, June 25 (morning):<br />
Hall to Controlled Access<br />
Switch from deuterium to hydrogen loop (~8 hours)<br />
Condense target<br />
We will start taking LH2 data (~2 shifts)</p>
<p> Thursday, June 26 (tentative, depending on LH2 data collected):<br />
Move SHMS to 13.5°<br />
Move HMS to 13.5°<br />
We will take hydrogen and/or empty target data (~8 hours)</p>
<p>We will have an in-person meeting today at CH conference room and via zoom.<br />
Zoom Info and online information: <a href="https://hallcweb.jlab.org/wiki/index.php?title=June_24,_2025">https://hallcweb.jlab.org/wiki/index.php?title=June_24,_2025</a></p>
<p>Many Thanks to our shift takers for their hard work. We still need many shift crews starting Friday Owl Shift. Please consider signing up if you are available.<br />
Shift Sign Up link: <a href="https://misportal.jlab.org/mis/physics/shiftSchedule/index.cfm?experimentRunId=HALLC-LAD">https://misportal.jlab.org/mis/physics/shiftSchedule/index.cfm?experimen...</a></p>
<p>==============================</p>
<p>Day Shift Summary Today: <a href="https://logbooks.jlab.org/entry/4404552">https://logbooks.jlab.org/entry/4404552</a></p>
<p>Day Shift, June 23<br />
Summary: <a href="https://logbooks.jlab.org/entry/4403878">https://logbooks.jlab.org/entry/4403878</a><br />
Checklist: <a href="https://logbooks.jlab.org/entry/4404101">https://logbooks.jlab.org/entry/4404101</a><br />
BTA: <a href="https://logbooks.jlab.org/entry/4404117">https://logbooks.jlab.org/entry/4404117</a><br />
Target Status: <a href="https://logbooks.jlab.org/entry/4404029">https://logbooks.jlab.org/entry/4404029</a></p>
<p>Swing Shift, June 23<br />
Summary: <a href="https://logbooks.jlab.org/entry/4404130">https://logbooks.jlab.org/entry/4404130</a><br />
Checklist: <a href="https://logbooks.jlab.org/entry/4404228">https://logbooks.jlab.org/entry/4404228</a><br />
BTA: <a href="https://logbooks.jlab.org/entry/4404323">https://logbooks.jlab.org/entry/4404323</a><br />
Target Status: <a href="https://logbooks.jlab.org/entry/4404140">https://logbooks.jlab.org/entry/4404140</a><br />
Magnet Screenshots: <a href="https://logbooks.jlab.org/entry/4404207">https://logbooks.jlab.org/entry/4404207</a></p>
<p>Owl Shift, June 24<br />
Summary: <a href="https://logbooks.jlab.org/entry/4404351">https://logbooks.jlab.org/entry/4404351</a><br />
Checklist: <a href="https://logbooks.jlab.org/entry/4404532">https://logbooks.jlab.org/entry/4404532</a><br />
BTA: <a href="https://logbooks.jlab.org/entry/4404524">https://logbooks.jlab.org/entry/4404524</a><br />
Target Status: <a href="https://logbooks.jlab.org/entry/4404332">https://logbooks.jlab.org/entry/4404332</a><br />
Magnet Screenshots: <a href="https://logbooks.jlab.org/entry/4404528">https://logbooks.jlab.org/entry/4404528</a></p>
<p>Strip Charts: <a href="https://logbooks.jlab.org/entry/4404571">https://logbooks.jlab.org/entry/4404571</a></p>
<p>=======================================<br />
RC Report: June 18, 2025: <a href="https://logbooks.jlab.org/entry/4400382">https://logbooks.jlab.org/entry/4400382</a><br />
RC Report: June 19, 2025: <a href="https://logbooks.jlab.org/entry/4401192">https://logbooks.jlab.org/entry/4401192</a><br />
RC Report: June 20, 2025: <a href="https://logbooks.jlab.org/entry/4401859">https://logbooks.jlab.org/entry/4401859</a><br />
RC Report: June 21, 2025: <a href="https://logbooks.jlab.org/entry/4402574">https://logbooks.jlab.org/entry/4402574</a><br />
RC Report: June 22, 2025: <a href="https://logbooks.jlab.org/entry/4403272">https://logbooks.jlab.org/entry/4403272</a><br />
RC Report: June 23, 2025: <a href="https://logbooks.jlab.org/entry/4403949">https://logbooks.jlab.org/entry/4403949</a></p>
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