[Halla_running] [New Logentry] RC Update -- Saturday 05/31/25 [NO Meeting]

[pdbforce at jlab.org]

Logentry Text:
--
<h2>Accelerator and Hall Status</h2>
<ul>
  <li>Beam has been very stable and we have been taking production data @ 18uA. </li>
  <li>During yesterday's day shift, I made a brief, opportunistic escorted access to power cycle a CDET LV supply in an attempt to recover a missing detector section. The window was too short for any CDET expert to arrive, so I followed Ralph’s phone instructions. Unfortunately, the power cycle didn’t resolve the issue. The CDET team plans to investigate further during the upcoming maintenance day. <a href="https://logbooks.jlab.org/entry/4386813">https://logbooks.jlab.org/entry/4386813</a></li>
  <li>During mid-swing shift, a couple of GEM layers tripped. While investigating the cause, Asar (the GEM expert on call) noticed that the beam current was increased slightly (18uA -> ~18.6uA). SL notified MCC and they took care of it. <a href="https://logbooks.jlab.org/entry/4387092">https://logbooks.jlab.org/entry/4387092</a> </li>
  <li>The DAQ was stable during the day and swing shifts, but crashed multiple times during the owl shift, resulting in about <b>4 hours</b> of downtime. In addition to the GEMs, the HCAL VTPs have been causing frequent issues—often with unclear error types, making debugging difficult. Many thanks to Asar and Alex for their prompt efforts to resolve the problems.</li>
</ul>

<h2>Links to Shift Summaries</h2>
<ul>
  <li>Day Shift (Friday) --- <a href="https://logbooks.jlab.org/entry/4386699">https://logbooks.jlab.org/entry/4386699</a> </li>
  <li>Swing Shift (Friday) ---  <a href="https://logbooks.jlab.org/entry/4386962">https://logbooks.jlab.org/entry/4386962</a> </li>
  <li>Owl Shift (Saturday) --- <a href="https://logbooks.jlab.org/entry/4387247">https://logbooks.jlab.org/entry/4387247</a> </li>
</ul>

<h2>Sources of Major Downtime in the Hall</h2>
<table>
  <tr>
    <th>Source</th>
    <th>In the Last 24 hrs</th>
    <th>Since Wednesday May 28 Swing</th>
  </tr>
  <tr>
    <td>DAQ</td>
    <td>6 hrs</td>
    <td>18 hrs</td>
  </tr>
  <tr>
    <td>ECAL AC</td>
    <td>0 hr</td>
    <td>1 hr</td>
  </tr>
</table>

<h2>Accumulated Charge on LH2</h2>
<ul>
   <li>Total Accumulated Charge at Kin3 so far: <b>10.02 C</b> (Goal: 100 C) </li>
   <li>Total Accumulated Charge at Kin3 since Wednesday May 28 Swing: <b>2.27 C</b> </li>
</ul>

<h2>Run Plan for Today</h2>
<ul>
  <li>Continue taking production data @ 18uA</li>
</ul>

<p><b>We will not meet today. Please call the RC phone if you need me. Otherwise, have a great weekend!</b></p>


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This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/4387557
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