[Hallc_running] [New Logentry] Run plan tonight & tomorrow

smithg at jlab.org smithg at jlab.org
Mon Feb 24 19:00:01 EST 2020

Logentry Text:
<p>The run plan we discussed at today's RC meeting (https://hallcweb.jlab.org/wiki/index.php/RC_Meeting_and_Run_Plan,_Monday,_February_24th_2020) is to continue production running on the 3He cell with longitudinal polarization, taking NMRs every 5 h. Tomorrow beam will go off from 8:30-12:30. Hall C should be ready to enter at ~9 AM. Activities during the access are:</p><ul><li>The techs will pump the HMS SHMS xfer line IV space, and the Moller magnet IV.</li><li>Cryo will use a sonic sniffer to check for any helium leaks we might have, in an effort to track down a leak that developed somewhere at the lab after last Thursday's ESR crash.</li><li>The target experts will work on the target starting about 10 AM, and will put us in laser access CANS mode.</li></ul><p>Please let the RC know of any other activities that need to be done.</p><p>When we come back up we plan to take a 1 hour run with target out in order to characterize the beryllium window background, then return to p!
 roduction running with the 3He cell. We'll also precool the Moller lines in preparation for a Wednesday Moller cooldown, and a Moller measurement on Thursday.</p><p>Note that Wednesday morning, from 9-12, there will be an accelerator safety stand-down during which there will be no beam delivery.</p>


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/3791201
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