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<article id="node-1494797" class="node node-logentry article ia-n clearfix" role="article">
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<a href="https://logbooks.jlab.org/entry/4421733" rel="bookmark">RC Update - July 19, 2025</a>
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<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/4421733" class="lognumber" data-lognumber="4421733">4421733</a>. Submitted by <a href="https://logbooks.jlab.org/user/kinney">kinney</a> on <time datetime="2025-07-19T09:16:42-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1752927402&end_date=1752934602&book=HCLOG">Sat, 07/19/2025 - 09:16</a></time>. </p>
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<tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hclog">HCLOG</a></td></tr>
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<p>Major progress was made during the data as the coincidence time calculation from the ROC readouts (see log entry <a href="https://logbooks.jlab.org/entry/4420966">https://logbooks.jlab.org/entry/4420966</a>). Thanks to Mark Jones for coming out to help us! Estimated yields are now much closer to those estimated by Peter and Provakar.</p>
<p>Bill Henry provided a temporary fix for the broken cable connection on one end of an SHMS hodoscope paddle (<a href="https://logbooks.jlab.org/entry/4421094">https://logbooks.jlab.org/entry/4421094</a>). After discussion at the 2:30 meeting, we agreed with Bill that the FADC offsets needed adjustment, which he then implemented (<a href="https://logbooks.jlab.org/entry/4421084">https://logbooks.jlab.org/entry/4421084</a>). I believe this means that reference time cuts need to be checked/changed, but time difference cuts should not need changing.</p>
<p>Data collection continued on pi- SIDIS data at x=0.25, Q2=3.3, z=0.36 through day, swing and owl shift. The accelerator turned off for a relatively brief time (< 1hr) during the passage of a thunderstorm overhead. During the owl shift, we completed measurements of DIS in the HMS and SHMS for all the targets, then returned to finish the remaining cycles of SIDIS at this kinematic. Beam has generally been very good, even with the higher currents used in the dummy runs.</p>
<p>After finishing the z=0.36 pi- SIDIS kinematic, we will move to the z=0.9 pi- SIDIS. At 2pm we hope to perform a BCM calibration with Dave Mack's help.</p>
<p>There will be an RC meeting today at 2:30 pm in the meeting room on the 2nd floor of the Counting House. The usual Zoom information is below:</p>
<p><a href="https://jlab-org.zoomgov.com/j/1618227115?pwd=8JkhFg6YNesVc3HNgWjwUSIKIu">https://jlab-org.zoomgov.com/j/1618227115?pwd=8JkhFg6YNesVc3HNgWjwUSIKIu</a>...<br />
Meeting ID: 161 822 7115<br />
Passcode: 253463</p>
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