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</style><article id="node-1086226" 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/4013194" rel="bookmark">RC Daily Summary July 9</a>
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Lognumber <a href="https://logbooks.jlab.org/entry/4013194" class="lognumber" data-lognumber="4013194">4013194</a>. Submitted by <a href="https://logbooks.jlab.org/user/holtrop">holtrop</a> on <time datetime="2022-07-09T11:53:29-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1657378409&end_date=1657385609&book=HBLOG">Sat, 07/09/2022 - 11:53</a></time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hblog">HBLOG</a></td></tr><tr><th>Entry Makers: </th><td>holtrop</td></tr></table></div>
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<p><strong>RC Summary Saturday July 9th</strong></p><p> </p><p>Friday day shift started with data taking, run 16270, 35M events, and 16271, 5.7M events.<br />Friday around 1pm beam started to get poor. MCC worked on the injector.<br />Friday at 2pm We went to controlled access to anneal the target: <a href="https://logbooks.jlab.org/entry/4012891">https://logbooks.jlab.org/entry/4012891</a><br /> The target material was taken out, mixed, allowed to warm up in Argon, then replaced in target cell.<br />Friday at 6pm Target group is done and we close the hall.<br />Friday 6pm - 0am MCC is trying to get the injector problems fixed for us, which were causing high counts on beam halo monitors.</p><p>Saturday owl - Spend most of the night trying to get the raster optimized. <br />Saturday owl - New raster offsets: X = -0.3 Y = 0.4 <a href="https://logbooks.jlab.org/entry/4013087 ">https://logbooks.jlab.org/entry/4013087 </a> 2H01: (-2.3, 1.8) <a href="https://logbooks.jlab.org/entry/4013089">https://logbooks.jlab.org/entry/4013089</a> <br />Saturday day - Taking data with 4nA to 50M events. Then another ~3 hours of 50nA, then more 4nA data taking.</p><p>Results from Cold Target Irradiation: <br />Dose calculation, Chris Keith: approximately 2E15 e-/cm^2 <a href="https://logbooks.jlab.org/entry/4012951 ">https://logbooks.jlab.org/entry/4012951 </a> <br />Effect on Forward Tagger, Raffaella DeVita: We should not over-raster for 50nA running: <a href="https://logbooks.jlab.org/entry/4013181">https://logbooks.jlab.org/entry/4013181</a> and <a href="https://logbooks.jlab.org/entry/4012927">https://logbooks.jlab.org/entry/4012927</a> Target polarization at start of 50nA running was up to 9% after 1 hour of 50nA down tp 5.9%</p><p> </p><p>Summaries:<br />Day: <a href="https://logbooks.jlab.org/entry/4012627">https://logbooks.jlab.org/entry/4012627</a><br />Swing: <a href="https://logbooks.jlab.org/entry/4012856">https://logbooks.jlab.org/entry/4012856</a><br />Owl: <a href="https://logbooks.jlab.org/entry/4012993">https://logbooks.jlab.org/entry/4012993</a><br />Day Saturday: <a href="https://logbooks.jlab.org/entry/4013125">https://logbooks.jlab.org/entry/4013125</a></p><p> </p><p>Runs: <a href="https://clasweb.jlab.org/clas12online/timelines/rg-c/RGC2022_progress_charge.html">https://clasweb.jlab.org/clas12online/timelines/rg-c/RGC2022_progress_ch...</a></p><p>16270 35M events.<br />16271 5.7M events.<br />16273 32M events. 4nA raster optimization in process, still production run.<br />16276 10M events<br />16277 51M events </p><p> </p><p>Total production running charge on ND3 ~ 0.1 mC</p> </div>
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