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</style><article id="node-917514" class="node node-logentry contextual-links-region article ia-n clearfix" role="article"><header class="node-header"><h1 class="node-title">
<a href="https://logbooks.jlab.org/entry/3844533" rel="bookmark">RC Daily Update </a>
</h1>
</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/3844533/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/3844533/delete?destination=email/send">Delete</a></li></ul></div>
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<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/3844533" class="lognumber" data-lognumber="3844533">3844533</a>. Submitted by <a href="https://logbooks.jlab.org/user/tianye">tianye</a> on <time datetime="2020-09-09T11:33:02-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1599661982&end_date=1599669182&book=HALOG">Wed, 09/09/2020 - 11:33</a></time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/halog">HALOG</a></td></tr><tr><th>Entry Makers: </th><td>tianye</td></tr></table></div>
<div class="logentry node-content">
<p>Production went smoothly during yesterday's day shift. After yesterday's beam study ( done at 20:40), MCC found out that the1H04B harp was inoperative while we were following the procedure of restoring the beam on our target. The 1H04A harp was reading A (305um,320um) (<a href="https://logbooks.jlab.org/entry/3844189">https://logbooks.jlab.org/entry/3844189</a>), which is consistent with recent configurations. There is no indication to show that the beam spot is too small at the target (<100um). So we feel confident to proceed for last night. Due to the 2L23-5 Solenoid Low Fault, the beam was off about 3.5 hours during today's owl shift. The I&C group has been debugging the 1H04B harp issue since the 8:00am MCC meeting. They thought that it might need to replace the pre-amplifier. At 9:27 am, the beam was off due to a vacuum problem in the South Linac. RadCon started a survey at 9:53 during the beam off period. Hall A is under control access now. Currently I&C experts are inside the hall to work on the 1H04B issue. (Hall A full survey <a href="https://logbooks.jlab.org/entry/3844513">https://logbooks.jlab.org/entry/3844513</a>)<br />
<br />
The plan is to continue production after fixing the harp 1H04B. The pedestal calibration will be taken during today's swing shift.</p>
<p>We will have our usual meeting at 3:30 PM today. Bluejeans link : <a href="https://bluejeans.com/256205934">https://bluejeans.com/256205934</a> </p>
<p>Ye Tian <br />
(Hall A Run Coordinator)</p>
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