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<article id="node-1522263" class="node node-logentry article ia-n clearfix" role="article">
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<a href="https://logbooks.jlab.org/entry/4449195" rel="bookmark">RC Daily Summary August 23, 2025</a>
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Lognumber <a href="https://logbooks.jlab.org/entry/4449195" class="lognumber" data-lognumber="4449195">4449195</a>. Submitted by <a href="https://logbooks.jlab.org/user/ole">ole</a> on <time datetime="2025-08-23T12:23:18-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1755962598&end_date=1755969798&book=HCLOG">Sat, 08/23/2025 - 12:23</a></time>. </p>
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<tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hclog">HCLOG</a></td></tr>
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<p>Data taking over the last 24 hours was quite productive, with a total ABU of 15.86 hours (66% efficiency). We finished the (short, 6 hour) z=0.90 pi- theta_pq=2.0 sequence and the (long, 16 hour) z=0.67 pi- theta_pq=2.0 sequence. As of 11am today, we are on the z=0.50 pi- theta_pq=2.0 setting that'll take at least two shifts to complete.</p>
<p>Updates from Accelerator:<br />
- The box power supply for Arc 10 (aka ARCAA) trips due to oscillations. This prevents beam delivery to Hall D. Troubleshooting and repairs could be time-consuming (>= 1 shift) and will not be done before Monday: <a href="https://ace.jlab.org/dtm/open-events?event_id=21768">https://ace.jlab.org/dtm/open-events?event_id=21768</a><br />
- Attempts to bring the Hall C current to 60 uA were thwarted by BLM trips, possibly due to noisy BCM signals: <a href="https://logbooks.jlab.org/entry/4448944">https://logbooks.jlab.org/entry/4448944</a>. We currently can't go over 45 uA. However, MCC is attempting to work around the noise issue by raising the trip thresholds: <a href="https://logbooks.jlab.org/entry/4449178">https://logbooks.jlab.org/entry/4449178</a></p>
<p>Issues resolved:<br />
- SMHS dipole interlock: <a href="https://logbooks.jlab.org/entry/4448324">https://logbooks.jlab.org/entry/4448324</a> <a href="https://logbooks.jlab.org/entry/4448331">https://logbooks.jlab.org/entry/4448331</a> <a href="https://logbooks.jlab.org/entry/4448341">https://logbooks.jlab.org/entry/4448341</a><br />
- HMS dipole trip" <a href="https://logbooks.jlab.org/entry/4448934">https://logbooks.jlab.org/entry/4448934</a> <a href="https://logbooks.jlab.org/entry/4448940">https://logbooks.jlab.org/entry/4448940</a><br />
- HMS NMR - field might have been off for run 25159: <a href="https://logbooks.jlab.org/entry/4448955">https://logbooks.jlab.org/entry/4448955</a></p>
<p>Current issues:<br />
- Potentially bad SHMS preshower blocks: <a href="https://logbooks.jlab.org/entry/4448310">https://logbooks.jlab.org/entry/4448310</a></p>
<p>Shift summaries:<br />
8/22 DAY: <a href="https://logbooks.jlab.org/entry/4448603">https://logbooks.jlab.org/entry/4448603</a><br />
8/22 SWING: <a href="https://logbooks.jlab.org/entry/4448616">https://logbooks.jlab.org/entry/4448616</a><br />
8/22 OWL: <a href="https://logbooks.jlab.org/entry/4448843">https://logbooks.jlab.org/entry/4448843</a></p>
<p>We'll have the RC meeting at 2:30 pm today (remote is fine)<br />
Zoom link: <a href="https://jlab-org.zoomgov.com/j/1618227115?pwd=8JkhFg6YNesVc3HNgWjwUSIKIu5SvP.1">https://jlab-org.zoomgov.com/j/1618227115?pwd=8JkhFg6YNesVc3HNgWjwUSIKIu...</a><br />
Dial-in: 833 568 8864<br />
Meeting ID: 161 822 7115<br />
Passcode: 253463</p>
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