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<span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131">Dear Collaborators,<o:p></o:p></span></p>
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<span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131">During Yesterday day shift, MCC made an access to Hall A due to an IOC for a beam position monitor down, and needed manual reboot; see log entry here:</span><span class="apple-converted-space"><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"> </span></span><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"><a href="https://logbooks.jlab.org/entry/4433820"><span style="color:#0000EE">https://logbooks.jlab.org/entry/4433820</span></a></span><span class="apple-converted-space"><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"> </span></span><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131">.
This roughly attributed 1-hour beam down for Hall A. Starting at around 11AM during Sunday day, it was decided to execute an ECal cluster threshold study; With the help of ECal experts, we took two 4-hour runs with different ECal cluster threshold, one run
at 40% ECal threshold with 10 uA beam current; the other run at 60% with 10 uA beam current. Both runs accumulated more than 0.15 C charge, see log entries here:</span><span class="apple-converted-space"><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"> </span></span><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"><a href="https://logbooks.jlab.org/entry/4433785"><span style="color:#0000EE">https://logbooks.jlab.org/entry/4433785</span></a></span><span class="apple-converted-space"><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"> </span></span><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131">and</span><span class="apple-converted-space"><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"> </span></span><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"><a href="https://logbooks.jlab.org/entry/4433787"><span style="color:#0000EE">https://logbooks.jlab.org/entry/4433787</span></a>.
The program took roughly 1.5 shifts, and was completed during Monday OWL shift around 4AM. There was a couple DAQ down per shift, but they usually get resolved quickly by DAQ experts on-call. Other than that, the rest in Hall A was going smooth.<br>
Today is scheduled for Hall B pass change, so most of the day shift will be no beam. Wednesday day shift is scheduled for both Hall A beam line Compton study and a maintenance day, during the 8AM MCC meeting, there was a suggestion that move maintenance day
to Thursday considering the amount of work required for both programs, it is not finalized yet.</span><span class="apple-converted-space"><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"> </span></span><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"><o:p></o:p></span></p>
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<span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131">Charge collected since yesterday's Day to today's owl:<br>
* Total Accumulated Charge at Kin3 so far: 74.496 C (Goal: 100 C)<br>
* Total Accumulated Charge at Kin3 since yesterday : 1.352 C<o:p></o:p></span></p>
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<span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131">Shift Summary:<br>
* Yesterday's Day:</span><span class="apple-converted-space"><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"> </span></span><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"><a href="https://logbooks.jlab.org/entry/4433696"><span style="color:#0000EE">https://logbooks.jlab.org/entry/4433696</span></a><br>
* Yesterday's Swing:</span><span class="apple-converted-space"><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"> </span></span><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"><a href="https://logbooks.jlab.org/entry/4433918"><span style="color:#0000EE">https://logbooks.jlab.org/entry/4433918</span></a><br>
* Today's Owl:</span><span class="apple-converted-space"><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"> </span></span><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"><a href="https://logbooks.jlab.org/entry/4434228"><span style="color:#0000EE">https://logbooks.jlab.org/entry/4434228</span></a><o:p></o:p></span></p>
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<span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131">RC Meeting:<br>
* We will have RC meeting today at 1 pm in the conference room in the second floor of the CH and on Zoom.<br>
*</span><span class="apple-converted-space"><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"> </span></span><span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131"><a href="https://jlab-org.zoomgov.com/j/1616220064"><span style="color:#0000EE">https://jlab-org.zoomgov.com/j/1616220064</span></a><br>
* Meeting ID: 161 622 0064<br>
* Passcode: 314159<o:p></o:p></span></p>
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<span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131">Best Regards,<o:p></o:p></span></p>
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<span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131">Xinzhan<o:p></o:p></span></p>
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<span style="font-size:10.5pt;font-family:"Trebuchet MS",sans-serif;color:#313131">Hall A RC<o:p></o:p></span></p>
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