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<div><span style="font-family:Calibri,Helvetica,sans-serif">Hi All,</span></div>
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<div><span style="font-family:Calibri,Helvetica,sans-serif">this is the status and report of the BONuS experiment (Run Group F), Monday, August 17th, 2020</span></div>
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What was expected and apparently it was going to be a quiet day in a beautiful sunny day, became a bit hellish during the afternoon.</div>
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<li>OWL: </li><ul>
<li>a very quiet shift</li><li>37.1M events collected</li></ul>
<li>DAY:</li><ul>
<li>beam current ramping increased <br>
</li><li>from Yuri G. "beam quality for the recent runs is worse than for the reference run 12521 (low occupancy peak dominates the signal peak)"
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</li><li>Raffaella D. recompiled clas12mon<br>
</li><li>37.48M events collected</li></ul>
<li>SWING:</li><ul>
<li>there was a concern about the increase of event rate (of the order ~20%) with the same current (200nA). ~18:10<br>
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<li>Sebastian K. suggested to do a harp scan to check the beam profile --> it shows similar reference spectra.</li></ul>
<li>In order to find out the origin of such increase, we turn off the Hall B laser and monitor the BOM observing bleedtrough from the injector and the separation of beams in the other halls.
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<li>From Jerry G. "Eugene P. noticed the increased event rate started last night about midnight."</li><li>Different attempts to improve the separation between Hall B and C were unsuccessful</li><li>Reducing the opening of the slits and increase current from injector also failed.
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</li><li>Since tomorrow was planned to tune the source, it was decided to continue as it is.
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</li><li><a href="https://logbooks.jlab.org/entry/3829516" id="LPlnk445368">https://logbooks.jlab.org/entry/3829516</a></li></ul>
<li>returning to data acquisition ~21:30</li><li>29.4M events collected</li></ul>
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<div>TOTAL NUMBER OF EVENTS THIS DAY: 66.78M<br>
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<div>Beam will be off tomorrow morning at 7:45 to allow reduce the radiation in the air, mainly in Hall A. It is IN PRINCIPLE a beam down period of 4 hours. I will recall in the MCC meeting the need to study and solve the bleedthrough issue. I didn't get any
notification for access to the hall, so I guess nobody is interested to do it. In case a sudden case of access the hall appears, please note that we are the last of the list
<a href="https://logbooks.jlab.org/entry/3829470" id="LPlnk826291">https://logbooks.jlab.org/entry/3829470</a>.
<a href="https://wiki.jlab.org/clas12-run/index.php/Run_Group_F#Schedule" id="LPNoLPOWALinkPreview_0">
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<div>I created a spreasheet to fill the number of event per shift. Since the shift workers are already indicating the number of events with the number of run (among more information) I am just couting the number of events. Nevertheless, I undestand that anybody
with good knowledge of python can reach that number from RCDB (sql). <a href="https://wiki.jlab.org/clas12-run/index.php/Run_Group_F#Schedule">
https://wiki.jlab.org/clas12-run/index.php/Run_Group_F#Schedule</a><br>
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Tomorrow seems to be an interesting day<br>
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<div><span>Logbook Shift summaries:</span><br>
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<div>Owl: <a href="https://logbooks.jlab.org/entry/3828939" id="LPlnk379712">https://logbooks.jlab.org/entry/3828939</a><br>
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<div>Day: <a href="https://logbooks.jlab.org/entry/3829137" id="LPlnk303770">https://logbooks.jlab.org/entry/3829137</a><br>
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<div>Swing: <span style="font-family:Calibri,Helvetica,sans-serif"><a href="https://logbooks.jlab.org/entry/3829400" id="LPlnk655995">https://logbooks.jlab.org/entry/3829400</a><br>
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<div><span style="font-family:Calibri,Helvetica,sans-serif">We will have our RC Daily meeting at 12 pm
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<div><span style="font-family:Calibri,Helvetica,sans-serif">BlueJeans link:</span><span style="font-family:Calibri,Helvetica,sans-serif"><br>
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<div><span style="font-family:Calibri,Helvetica,sans-serif">https://bluejeans.com/7576835804</span><span style="font-family:Calibri,Helvetica,sans-serif"><br>
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<div><span style="font-family:Calibri,Helvetica,sans-serif">Cheers</span><span style="font-family:Calibri,Helvetica,sans-serif"><br>
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<div><span style="font-family:Calibri,Helvetica,sans-serif">-Carlos</span></div>
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