[Prex] [New Logentry] RC Daily Update (final one)

[covrig at jlab.org]

Logentry Text:
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<p><strong>Summary: </strong></p><ul><li>Acc down 4+ hours due to Halls A+B drive lasers lost power</li><li>One last PITA scan and one last pedestal scan</li><li>CREX/Hall instrumentation has been behaving</li><li>ABU for the past 22h has been 41.5%</li></ul><p> </p><p> <strong>Notable events:</strong></p><p> Thu - Day</p><ul><li>PITA scan done</li><li>Acc down for more than 4 hours due to drive lasers in Halls A and B losing power, caused by RF https://logbooks.jlab.org/entry/3850453</li><li>ABU 2h / BNA 5.9h / BANU 0.1h</li></ul><p>Thu - Swing</p><ul><li>Unser scan (which also doubles as a current scan on C-1%) aborted after taking 3 clean beam current steps (50, 80 and 120 uA) due to beam instabilities</li><li>Due to beam intabilities decided to give up on the remainder of the raster area scan study and go into production on Ca-48</li><li>MCC cannot deliver 150uA with a reasonable trip rate, lowered Hall A current to 130 uA for the shift</li><li>Conmpl!
 eted a pedestal scan https://logbooks.jlab.org/entry/3850715 </li><li>BCM receiver check for Shujie with tune beam for a few minutes</li><li>ABU 4.2h / BNA 3.7h / BANU 0.6h</li></ul><p>Fri - Owl</p><ul><li>6 hours shift for CREX (10+ for Victoria and Siyu!), pretty good beam delivery overnight, high trip rate though </li><li>Beam increased to 140 uA Production on Ca-48 https://logbooks.jlab.org/entry/3851000 </li><li>ABU 3h / BNA 3h / BANU 0h</li></ul><p> </p><p><strong>Final Remarks</strong></p><ul><li>We are done with CREX, we have accummulated 481.36 C total charge, of which 382.56 C is Good charge, which is 81.91% of proposal!!!</li><li>List of prompt shutdown actions (thanks to Victoria and Siyu) https://logbooks.jlab.org/entry/3850998 https://logbooks.jlab.org/entry/3851070 </li><li>The target is warm https://logbooks.jlab.org/entry/3851097</li><li>Magnets are in Jack's hands now https://logbooks.jlab.org/entry/3851112</li><li>VDCs and GEMs wi!
 ll be available, Jack would like a heads up when we will be do!
 ne with cosmics runs</li></ul><div> </div><p><strong>Last RC Daily Meeting at 3:30pm </strong></p><p>   BlueJeans calling instructions:</p><p>   Toll-Free Number (U.S.&  Canada):  888-240-2560</p><p>   International toll number:         408-740-7256</p><p>   Bluejeans CODE:                    256 205 934 </p><p>   Bluejeans link: https://bluejeans.com/256205934</p><p> </p>

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