[Halla_running] [New Logentry] RC Daily Update

[covrig at jlab.org]

Logentry Text:
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<p><strong>Summary: </strong></p><ul><li>For the last 24 h, Wed - Day, Wed - Swing and Thu - Owl, the beam has been trippy sometimes with more than 40 trips/h, of which up to 24 were caused by RF.</li><li>Since 7pm yesterday we were limited to 140 uA due to BLM trips in the injector</li><li>24h ABU = 627 min, BNA = 707 min, efficiency 43.75%</li><li>Total good charge to date 361.03 C (out of 467 C), 77.3% of proposal</li></ul><div> </div><p><strong>Notable events</strong>:</p><p style="padding-left: 30px;">Wed - Swing</p><ul><li>PITA scan and detector calibrations (97 min) <a href="https://logbooks.jlab.org/entry/3844756">https://logbooks.jlab.org/entry/3844756</a><a href="https://logbooks.jlab.org/entry/3845248">https://logbooks.jlab.org/entry/3845248</a></li><li>7:32pm due to BLM caused trips in the injector MCC limits us to 140 uA going forward <a href="https://logbooks.jlab.org/entry/3844844">https://logbooks.jlab.org/entry/3844844</a> Crew Chief!
  would not entertain re-steering in the injector so late in the day. Ops did suggest to try lowering the ramp rate to 5 uA/s to see if this would mollify the ILM0L02, but accounting for the enormous number of RF trips I decided to stay at 140 uA overnight</li><li>Charge asym width larger than normal, Weibin noticed that it may be a periodic effect <a href="https://logbooks.jlab.org/entry/3844923">https://logbooks.jlab.org/entry/38449</a></li></ul><p style="padding-left: 30px;">Thu - Owl</p><ul><li>3:57am Lost Compton laser power, recovered in an hour by rebooting the IOC</li></ul><p> </p><p><strong>Plans ahead</strong></p><ul><li>MCC to take the beam away around 9am for about 2 hours Thu - Day to resteer in the injector and do RF recovery on a cavity to fix both the cause of the BLM trips and the RF much higher than normal trip rate</li><li>Hall C will attempt a Moller measurement once the beam returns today and they will ask for changing the IHWP state during Mol!
 ler (and it will stay in the new state)</li><li>Production on !
 48Ca once the beam is restored</li></ul><div> </div><p><strong>Notices</strong> </p><ul><li>ABUs should be prorated if the MCC cannot deliver 150 uA</li></ul><p> </p><p>RC daily meeting at 3:30pm Bluejeans link : https://bluejeans.com/256205934 </p>

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