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</style><article id="node-1083005" 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/4009973" rel="bookmark">RC Update - 02/07/22</a>
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</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/4009973/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/4009973/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/4009973" class="lognumber" data-lognumber="4009973">4009973</a>. Submitted by <a href="https://logbooks.jlab.org/user/sjdkay">sjdkay</a> on <time datetime="2022-07-02T10:51:19-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1656769879&end_date=1656777079&book=HCLOG">Sat, 07/02/2022 - 10:51</a></time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hclog">HCLOG</a></td></tr></table></div>
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<p>An update on our progress this morning, as a reminder, we won't have a meeting today and there are none planned for the long weekend.</p>
<p>Physics Update</p>
<p>- We got beam back during swing yesterday<br />
- We finished off the Q2 = 6.0, W = 2.40 LD2+ Left (SHMS = 16.91) setting towards the end of swing<br />
- The aluminium dummy for this setting was done too at the start of owl<br />
- We then made progress on the LH2 data taking for the same kinematic. We're roughly halfway through this now. My current projection is that we have ~6 hours or so left on this setting, after that we proceed to the central setting (SHMS = 14.91) for the same kinematic<br />
- The charge goal projections in the run plan are a bit off and will be updated</p>
<p>Accelerator Update</p>
<p>- We're not up to 70 or 80uA, but we have had fairly stable 50-60 uA beam through the night. The plan is to just keep this up over the long weekend<br />
- Due to a BCM mismatch, we may have been receiving ~10% less current than we thought. This has now been corrected. As a quick example, what swing shift thought was 57uA last night was actually 52uA. See - <a href="https://logbooks.jlab.org/entry/4009749">https://logbooks.jlab.org/entry/4009749</a><br />
- As a consequence of this update, the two current values on the wall display should now match up (with a small time delay)<br />
- There have been a few accelerator issues this morning, so we're falling a bit behind schedule</p>
<p>Hall Update</p>
<p>- We've had two HMS Q1 interlocks this morning, both have cleared without issue from the CH. Something to keep an eye on though.</p>
<p>Plan Going Forward</p>
<p>- We'll keep slowly chugging through the run plan. Compared to my projection yesterday (<a href="https://logbooks.jlab.org/entry/4009519">https://logbooks.jlab.org/entry/4009519</a>) we're roughly 5-6 hours behind my projected progress<br />
- I'll recalibrate my crystal ball once I have more data points. Unfortunately the LH2 rates seem to be just as low as the LD2 rates for this setting.<br />
- I've requested a BCM calibration for Tuesday, we'll see how reliable the "high" current is over the weekend and re-asses that if needed though<br />
- Looks like the rotation to small SHMS angles (6.79) is likely to be Tuesday or even into Wednesday unless things speed up significantly</p>
<p>I'll drop another mini update this evening with progress. Look for another full update tomorrow morning.</p>
<p>Have a great long weekend!</p>
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