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<a href="https://logbooks.jlab.org/entry/4386792" rel="bookmark">ECal temperatures comparatively erratic</a>
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Lognumber <a href="https://logbooks.jlab.org/entry/4386792" class="lognumber" data-lognumber="4386792">4386792</a>. Submitted by <a href="https://logbooks.jlab.org/user/jonesdc">jonesdc</a> on <time datetime="2025-05-30T11:29:48-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1748615388&end_date=1748622588&book=HALOG">Fri, 05/30/2025 - 11:29</a></time>. </p>
<p class="last-update">
Last updated on <time datetime="2025-05-30T11:36:59-0400" pubdate="pubdate">Fri, 05/30/2025 - 11:36</time> </p>
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<tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/halog">HALOG</a></td></tr>
<tr><th>Entry Makers: </th><td>jonesdc</td></tr>
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<p>Around 13:00 hrs yesterday, ECal temperatures began to oscillate somewhat erratically and decrease away from their usual mean of 210degC on the crystals. The behavior was not alarming, but was different and not normal. I wondered if the P and I control values had been changed but that was not the case. I noticed that the current started frequently dropping to 0 simultaneously on all circuits (see attachment 2). This is likely a radiation issue. This morning I remotely restarted the cRIO in the hall. We will see if that helps.</p>
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<div class="image-wrapper"><img view_mode="elog_email" class="image-style-plentybig" src="https://logbooks.jlab.org/files/styles/plentybig/public/2025/05/4386792/Screenshot from 2025-05-30 11-24-41.png" width="960" height="526" alt="" /></div> <div class="image-wrapper"><img view_mode="elog_email" class="image-style-plentybig" src="https://logbooks.jlab.org/files/styles/plentybig/public/2025/05/4386792/Screenshot from 2025-05-30 11-35-13.png" width="960" height="513" alt="" /></div> </div>
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