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</style><article id="node-735867" 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/3662951" rel="bookmark">Base Replacements</a>
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</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/3662951/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/3662951/delete?destination=email/send">Delete</a></li></ul></div>
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Lognumber <a href="https://logbooks.jlab.org/entry/3662951" class="lognumber" data-lognumber="3662951">3662951</a>. Submitted by <a href="https://logbooks.jlab.org/user/gleasonc">gleasonc</a> on <time datetime="2019-03-04T11:53:39-0500" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1551714819&end_date=1551722019&book=HDFCAL">Mon, 03/04/2019 - 11:53</a></time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hdfcal">HDFCAL</a></td></tr><tr><th>Entry Makers: </th><td>gleasonc</td></tr></table></div>
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<p>Three bases were replaced today. One of them was the problematic base at (1,2) from over the weekend. The HV on this channel was stable Sunday, but on Monday morning it began dropping again. To avoid hv issues over the next week, I decided to swap it out. On the test bench, the signal from this base was around the average value, so I do not expect the signal to change much. This is also seen in the scaler rate, which is similar to its neighbors. It might be good to check the pi0 peak for this channel for a run just to make sure the pi0 peak did not shift.</p>
<p>X FCAL FCAL Base ID Reason New Base ID Old CAN ID New CAN ID<br />
1 2 21971 hv 21935 7565702 7496262<br />
-5 -12 22182 hv 22411 7549045 7491681<br />
11 22 22578 hv 21700 7522193 7513117</p>
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