<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: arial,helvetica,sans-serif; font-size: 10pt; color: #000000'>Hello Dave,<br>The Hall C HMS magnets all tripped off around the time of the Hall A trip due to VCL flow interlocks.<br>I don't see where a magnet started to warm up. Could you ID the magnet in question for us?<br><br>Thanks<br>Steven<br><br><hr id="zwchr"><div style="color: rgb(0, 0, 0); font-weight: normal; font-style: normal; text-decoration: none; font-family: Helvetica,Arial,sans-serif; font-size: 12pt;"><b>From: </b>kashy@jlab.org<br><b>To: </b>devita@jlab.org, sandoval@jlab.org, hallb-engineering@jlab.org, esr-users@jlab.org<br><b>Sent: </b>Monday, January 22, 2018 6:55:03 AM<br><b>Subject: </b>[Esr-users] [Revised Logentry] Follow-up Re: Controlled Ramp on VCL Flow<br><br>
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</style><h1 class="node-title">
<a href="https://logbooks.jlab.org/entry/3518798" rel="bookmark" target="_blank">Follow-up Re: Controlled Ramp on VCL Flow</a>
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<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/3518798" class="lognumber" target="_blank">3518798</a>. Submitted by <a href="https://logbooks.jlab.org/user/kashy" target="_blank">kashy</a> on Mon, 01/22/2018 - 00:13. </p>
<p class="last-update">
Last updated on Mon, 01/22/2018 - 06:50</p>
<table class="field-vitals"><tbody><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/halog" target="_blank">HALOG</a> <a href="https://logbooks.jlab.org/book/hblog" target="_blank">HBLOG</a> <a href="https://logbooks.jlab.org/book/hbsolenoid" target="_blank">HBSOLENOID</a> <a href="https://logbooks.jlab.org/book/hclog" target="_blank">HCLOG</a> <a href="https://logbooks.jlab.org/book/clog" target="_blank">CLOG</a></td></tr><tr><th>Entry Makers: </th><td>kashy</td></tr><tr><th>References: </th><td><a href="https://logbooks.jlab.org/entry/3518790" target="_blank">3518790 - Controlled Ramp on VCL Flow</a></td></tr></tbody></table></div>
<div class="logentry node-content">
<p>There were two events that effected our solenoid.<br>
1) the Hall A Q2 tripped and ramped down at 22:53<br>
This caused a large flow increase in the warm return line and thus temporary pressure increase.<br>
The solenoid lead flow bumped but it recovered.</p>
<p>2) The Hall C magnet started to warm </p>
<p>It looked like it went down first then went up. This may or may not have effected the Solenoid.<br>
At present all looks OK to continue the run</p>
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