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<a href="https://logbooks.jlab.org/entry/4415829" rel="bookmark">Hall C RC Update: July 11, 2025</a>
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Lognumber <a href="https://logbooks.jlab.org/entry/4415829" class="lognumber" data-lognumber="4415829">4415829</a>. Submitted by <a href="https://logbooks.jlab.org/user/gaskelld">gaskelld</a> on <time datetime="2025-07-11T08:26:20-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1752233180&end_date=1752240380&book=HCLOG">Fri, 07/11/2025 - 08:26</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>Yesterday we continued taking data on the empty 20 cm LAD cell at 1.9 uA. At 4 pm we rotated the HMS from 17.0 to 13.5 degrees and continued empty target data taking. A brief test was performed moving the beam ~+/-1 mm vertically and horizontally to check for possible scraping of the beam on the cell walls. While there was some change observed in the singles rates in the spectrometers when moving horizontally, this can likely be attributed to changes in the average scattering angle of electrons entering the spectrometer. This will be looked at further in offline analysis.</p>
<p>Today we will be in Controlled Access to allow Dave Meekins to fill the 20 cm cell with hydrogen. The radiation survey is underway, and the hall should be ready for access by 9 am. If you have any work to be done in the hall today, please contact the RC. </p>
<p>The 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=8JkhFg6YNesVc3HNgWjwUSIKIu5SvP.1">https://jlab-org.zoomgov.com/j/1618227115?pwd=8JkhFg6YNesVc3HNgWjwUSIKIu...</a></p>
<p> Meeting ID: 161 822 7115<br />
Passcode: 253463</p>
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