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</style><article id="node-1106676" 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/4033642" rel="bookmark">RC Daily Summary August 25, 2022</a>
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</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/4033642/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/4033642/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/4033642" class="lognumber" data-lognumber="4033642">4033642</a>. Submitted by <a href="https://logbooks.jlab.org/user/gayoso">gayoso</a> on <time datetime="2022-08-25T08:12:34-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1661425954&end_date=1661433154&book=HBLOG">Thu, 08/25/2022 - 08:12</a></time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hblog">HBLOG</a></td></tr></table></div>
<div class="logentry node-content">
<p>RC Report 25 August 2022</p>
<p>General Summary<br />
- there is a new Sheriff in town (kinda).<br />
- NH3 target was annealed <a href="https://logbooks.jlab.org/entry/4033292">https://logbooks.jlab.org/entry/4033292</a><br />
- Harp scans --><a href="https://logbooks.jlab.org/entry/4033346">https://logbooks.jlab.org/entry/4033346</a> , <a href="https://logbooks.jlab.org/entry/4033346">https://logbooks.jlab.org/entry/4033346</a>,<br />
- Moller run: 84.630 +/- 1.490 --> <a href="https://logbooks.jlab.org/entry/4033346">https://logbooks.jlab.org/entry/4033346</a><br />
- Swing shift beam quite smooth<br />
- HPW out around midnight<br />
- Owl shift small issue with the DAQ solved by Sergey</p>
<p>Shift Summaries:<br />
-Day --> <a href="https://logbooks.jlab.org/entry/4033211">https://logbooks.jlab.org/entry/4033211</a><br />
-Swing --> <a href="https://logbooks.jlab.org/entry/4033211">https://logbooks.jlab.org/entry/4033211</a><br />
-Owl --> <a href="https://logbooks.jlab.org/entry/4033526">https://logbooks.jlab.org/entry/4033526</a></p>
<p>Day Plan:<br />
- continue taking data until ~ 3pm<br />
- Chris Keith and team will change the target with an empty cell with no liquid helium in the bath</p>
<p>TO DO with empty target<br />
-- turn off HV for sensitive detectors like the DCs, FT and SVT and put the BMT into “safe” mode (please experts need to confirm details about it)<br />
-- change trigger to --> rgf_elec_2secrs_ftof_ctof_zero_field.trg<br />
-- raster histogram on the empty cell using a ~25mm radius before the solenoid field is lowered.<br />
-- ramping down both magnets and turn all detectors back on.<br />
-- run all night with 0 field</p>
<p>--->> THERE ARE DETAILS IN THIS PLAN TO BE ADJUSTED/DISCUSSED</p>
<p>List of valid/production runs -- aprox #events -- runtime -- target/HWP (from RCDB) (note, I write the HWP setting according to the timeline in the logbook):<br />
16765 -- 58M -- 3h23m -- NH3 / IN<br />
16766 -- 24M -- 1h28m -- NH3 / IN<br />
16767 -- 57.5M -- 4h -- NH3 / IN<br />
16768 -- 59M -- 4h -- NH3 / IN<br />
16769 -- 27M -- 1h48m -- NH3 / OUT (DAQ crash, but data probably good)<br />
16770 -- 54M -- 4h -- NH3 / OUT </p>
<p>TOTAL EVENTS (from 'good' runs): 279.5<br />
TOTAL RUNTIME (from valid runs): 18h39m</p>
<p>Run Coordinator items:</p>
<p>- I was informed that the target polarization sign was changed. I checked with the MyaPlot, there is no logentry to this change (not in HBLOG at least). Perhaps it is not important for the next job . The plan was to change the HWP during the swing shift but it was not clear when to do it with the new polarization. I asked to the Shift crew to request the change the HWP before the end of the shift, somehow to compensate the time after the annealing.<br />
- I asked the shift leader to fill the info about HWP plate and any necessary information in the comments of CODA before/after any run<br />
- I am forwarding this entry to <a href="mailto:rgc@jlab.org">rgc@jlab.org</a>, <a href="mailto:clas_members@jlab.org">clas_members@jlab.org</a>,<a href="mailto:stepanya@jlab.org">stepanya@jlab.org</a>, please let me know if this is incorrect, or it is redundant.</p>
<p>RC meeting Coordinates:<br /><a href="https://jlab-org.zoomgov.com/j/1608674253?pwd=SFZyYmZLWXJieGtpV2dEdVRiUE">https://jlab-org.zoomgov.com/j/1608674253?pwd=SFZyYmZLWXJieGtpV2dEdVRiUE</a>...<br />
Meeting ID: 160 867 4253<br />
Passcode: 786506</p>
<p>We will have the RC meeting at 14h</p>
<p>Your humble RC</p>
<p>-Carlos Ayerbe</p>
<p>Fun Fact of the day: </p>
<p>Did you know that art 139 of the Weimar Republic (Germany 1919 - 1933) said:<br />
"Sundays and public holidays recognized by the State remain under legal protection as days of rest and spiritual edification" </p>
<p>Holidays were protected by the Constitution!!</p>
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