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</style><article id="node-1258357" class="node node-logentry contextual-links-region article ia-n clearfix" role="article"><header class="node-header"><h1 class="node-title">
<a href="https://logbooks.jlab.org/entry/4185313" rel="bookmark">RC Summary 09/22/2023</a>
</h1>
</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/4185313/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/4185313/delete?destination=email/send">Delete</a></li></ul></div>
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<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/4185313" class="lognumber" data-lognumber="4185313">4185313</a>. Submitted by <a href="https://logbooks.jlab.org/user/jpoudel">jpoudel</a> on <time datetime="2023-09-22T13:05:30-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1695398730&end_date=1695405930&book=HALOG">Fri, 09/22/2023 - 13:05</a></time>. </p>
<p class="last-update">
Last updated on <time datetime="2023-09-22T13:07:35-0400" pubdate="pubdate">Fri, 09/22/2023 - 13:07</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>jpoudel</td></tr></table></div>
<div class="logentry node-content">
<p>Yesterday Swing (09/21/2023): Moeller measurement was completed around 9pm after the DC power fixed the issue related to Moller dipole magnet. During the time DC power were fixing dipole (took ~ 4hr and completed around 5pm), accelerator was also down for the maintenance of 1L11 transformer wiring <a href="https://logbooks.jlab.org/entry/4184663">https://logbooks.jlab.org/entry/4184663</a> . So beam was available to the hall only after 7 pm.</p>
<p>Polarisation for HWP OUT: 80.61+/-0.24 and HWP IN: -80.39+/-0.21 <a href="https://logbooks.jlab.org/entry/4184594">https://logbooks.jlab.org/entry/4184594</a></p>
<p>After the Moeller, we followed the beam checkout procedure and took a carbon hole run: <a href="https://logbooks.jlab.org/entry/4184795">https://logbooks.jlab.org/entry/4184795</a> which looks beam centered to the hole. So, reference cell was purged and filled with H2: <a href="https://logbooks.jlab.org/entry/4184808">https://logbooks.jlab.org/entry/4184808</a> and started taking data on H2 reference cell with correct SOFs.</p>
<p>Today OWL (09/22/2023): Beam current was ramped up to 30 uA, continued taking H2 data on reference cell. We took around 4.5M events on H2, and then switch to He3 target towards the end of owl shift.</p>
<p>Today DAY (09/22/2023): Continued taking production data on He3 cell, and beam current is also increased to 35uA for 30uA <a href="https://logbooks.jlab.org/entry/4185175">https://logbooks.jlab.org/entry/4185175</a> . Target group also completed EPR measurement <a href="https://logbooks.jlab.org/entry/4185268">https://logbooks.jlab.org/entry/4185268</a> .</p>
<p>It was smooth running during these shifts, and we found no major issues. I urge sub-system experts to look at the online plots, and let us know about the status of their sub-system.</p>
<p>We will discuss details during the RC meeting at 3:30pm today in the CH conference room. You could also join remotely with the following info:</p>
<p><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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