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<div dir="ltr">Hi Don,</div>
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<div dir="ltr">We will look into the issues when the hall opens on Monday. </div>
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<div dir="ltr">Have the shifters monitor the controls and temperatures until the hall opens for configuration change. </div>
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<div dir="ltr">Marc</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Dsg-halla_ecal <dsg-halla_ecal-bounces@jlab.org> on behalf of jonesdc--- via Dsg-halla_ecal <dsg-halla_ecal@jlab.org><br>
<b>Sent:</b> Saturday, April 26, 2025 10:35:01 PM<br>
<b>To:</b> Bogdan Wojtsekhowski <bogdanw@jlab.org>; dsg-halla_ecal@jlab.org <dsg-halla_ecal@jlab.org><br>
<b>Subject:</b> [Dsg-halla_ecal] [Revised Logentry] ECal heater/cooling status</font>
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<h1 class="x_node-title"><a href="https://logbooks.jlab.org/entry/4365927" rel="bookmark">ECal heater/cooling status</a>
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<p class="x_author-datetime">Lognumber <a href="https://logbooks.jlab.org/entry/4365927" class="x_lognumber" data-lognumber="4365927">
4365927</a>. Submitted by <a href="https://logbooks.jlab.org/user/jonesdc">jonesdc</a> on
<time datetime="2025-04-26T22:27:43-0400"><a href="https://logbooks.jlab.org/entries?start_date=1745717263&end_date=1745724463&book=HALOG">Sat, 04/26/2025 - 22:27</a></time>.
</p>
<p class="x_last-update">Last updated on <time datetime="2025-04-26T22:30:25-0400">
Sat, 04/26/2025 - 22:30</time> </p>
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<th>Logbooks: </th>
<td><a href="https://logbooks.jlab.org/book/halog">HALOG</a></td>
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<th>Entry Makers: </th>
<td>jonesdc</td>
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<div class="x_logentry x_node-content">
<p>The heater system for ECal is performing well keeping the crystal temperatures around 210 degC, although the first 16 channels of the crystals are no longer reporting temperatures. All other temperatures are being reported as expected and since the controls
are not based on crystal but front plate temperatures, all zones are continuing to regulate temperature as expected. One of the pump pressures is also behaving weirdly with the pressure spiking up from its usual 12 to 16 and then staying at 14.94 and not changing.
I see no change in the ambient temperatures in the back so I don't think a pump actually failed. However, it could be that the read back card or the pressure sensor has given out. If the rest of the system continues to work, we can wait until Monday when the
hall is open and someone from DSG can take a look at what might be causing the readout failures.</p>
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