[Hallc_running] [New Logentry] RC Daily Update

[munoz at jlab.org]

Logentry Text:
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Status:

- We've been running smoothly overnight and during the day today, with 6-7h ABU/shift.

- An incident around 5PM brought the SHMS Q3 and HB down simultaneously. This was also correlated to some C100's and other power supplies dropping in the accelerator side, and issues in Hall D. Probably all related to a glitch in the power grid due to the storm.
Steve Lassiter instructed us to go into the Hall C and power cycle the corresponding power supplies. This fixed the issue and we were ready in less than 1h. However, MCC is still working on their issues and we are still awaiting beam.

- The plan overnight is to continue taking data cycling over the 3 beam currents every 2-3 hours in order to match statistics.

Beam will stop at 6AM for the energy change, and we'll go to restricted access. Shift leader positions are cancelled on Monday DAY, Monday SWING and Tuesday OWL. Target operators must come in, though. Stay tuned for the situation after that (most likely SL will be on call on Tuesday).

Notices in effect for shift crews:
- Shift leaders, please fill out the check list once per shift.
- Shift leaders, please do a quick cross-check of the BTA numbers against your shift summary.
- Check that the pre-scaler gui is active and hasn't frozen / doesn't need re-started.
- Be on the lookout for any errors when running the replay, particularly errors concerning missing reference times.
- Note the new beam positions for this energy (on the whiteboard / note on wall)
- NB If the HV trips for SHMS S1Y5B contact Simona M. '''DO NOT change the HV from the nominal value!'''



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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/3636812
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