[Rgc] [New Logentry] RC Daily Summary Oct 13, 2022

[hauenst at jlab.org]

Logentry Text:
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<p>Welcome to the RC summary Oct 13:</p><p>I took over from Alexandre but so far not much more ABUs in my first 24h.</p><p>Yesterday, we moved to Carbon target and start taking data from noon till 6pm</p><p>At 6pm a blib in the end station refrigerator (ESR) occurred which took down our solenoid and torus and we lost all of the coolant. We had warmed up enough that it was necessary to take the<br> Torus and Solenoid to warm return for recovery. 4K flow to the Hall was choked of by warm gas returning up the transfer line. It took till this morning 4-5am till the magnets were cold again. Thank you very much Denny who a very very short night ( more details in his logbook entry https://logbooks.jlab.org/entry/4057090)</p><p>Solenoid interlocks could be reset but torus magnet failed. The magnet group was investigating and the issue was resolved around 10:30am when we start ramping the torus.</p><p>In the meantime, other issues came up:</p><ul><li>HV support for some ECAL PMTs act!
 ed weird after the magnet trips (https://logbooks.jlab.org/entry/4056889). Nathan came in and we replaced suspicious HV board as well as power supply when the crate didnt fail to came back up again (https://logbooks.jlab.org/entry/4056924)</li><li>RICH sector 1 gas system issues: Readbacks turned zero, Tyler replaced the gas system readout chassis (https://logbooks.jlab.org/entry/4057396)</li></ul><p>As of now (12:30pm), we get beam back and all magnets are online. The plan forward is to run on Carbon till tomorrow morning ~9am and then drop the hall to restricted for work on the magnet beacon, target change and walkthroughs.</p><p>Best,</p><p>Florian</p>

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This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/4057500
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