[Hallc_running] [Revised Logentry] Hall C, RC Report, Tuesday June 23, 2025

[hdbhatt at jlab.org]

Logentry Text:
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During the last 24 hours, we collected data for approximately 16.7 hrs : 4.22 hrs, 6.15 hrs, and 6.40 hrs during Day, Swing, and Owl shifts, respectively.

Yesterday, during the day shift, the accelerator was down from 9:20 am to 12:06 pm due to RF related issues. The beam was relatively stable during the Swing and Owl shifts.

There were three events of DAQ crashes during last 24 hours and were resolved by simple reset. 
12:15 pm https://logbooks.jlab.org/entry/4403336, one around 8:51 pm and another this morning 7:35 am the DAQ was frozen https://logbooks.jlab.org/entry/4403856. The shift crew continued data taking by opening a new DAQ, but the frozen DAQ was left there. During the beam down time Hanjie cleared the frozen DAQ https://logbooks.jlab.org/entry/4403913. 

This morning accelerator was down starting 8:20 am and beam is expected to be restored soon.

There will be no "maintenance day" this week, however, there will be RF recovery and Beam studies during the Day Shift on coming Wednesday, June 25.  Please let me know if there is any work in the Hall. We may be able to use the downtime for that purpose.

Run Plan:
We will continue data taking in the same configuration and will take two single arm runs, 10 minute each, during the swing shift with:
1) ps1= 0 and rest = -1
2) ps3 = 0 and rest = -1


Many thanks to our shift crews for their hard work. There are still many open shift slots, with an immediate need for Shift Leaders on Thursday (Day Shift), Friday (Owl Shift), and both SL and TO on Saturday (Owl Shift).  Please consider signing up if you can. The shift sign up link is:

https://misportal.jlab.org/mis/physics/shiftSchedule/index.cfm?experimentRunId=HALLC-LAD

There will be an in-person RC meeting at 2:30 pm at CH  conference room and via zoom. 
Zoom info: https://hallcweb.jlab.org/wiki/index.php?title=June_23,_2025

==============

Day Shift, June 22
Summary: https://logbooks.jlab.org/entry/4403236
Checklist: https://logbooks.jlab.org/entry/4403348
BTA: https://logbooks.jlab.org/entry/4403424
Target Status: https://logbooks.jlab.org/entry/4403350
Magnet Screenshots: https://logbooks.jlab.org/entry/4403347

Swing Shift, June 22
Summary: https://logbooks.jlab.org/entry/4403427
Checklist: https://logbooks.jlab.org/entry/4403556
BTA: https://logbooks.jlab.org/entry/4403630
Target Status: https://logbooks.jlab.org/entry/4403442
Magnet Screenshots: https://logbooks.jlab.org/entry/4403442

Owl Shift, June 23
Summary: https://logbooks.jlab.org/entry/4403636
Checklist: https://logbooks.jlab.org/entry/4403801
BTA: https://logbooks.jlab.org/entry/4403869
Target Status: https://logbooks.jlab.org/entry/4403646
Magnet Screenshots: https://logbooks.jlab.org/entry/4403779

=======================================
RC Report: June 18, 2025: https://logbooks.jlab.org/entry/4400382
RC Report: June 19, 2025: https://logbooks.jlab.org/entry/4401192
RC Report: June 20, 2025: https://logbooks.jlab.org/entry/4401859
RC Report: June 21, 2025: https://logbooks.jlab.org/entry/4402574
RC Report: June 22, 2025: https://logbooks.jlab.org/entry/4403272


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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/4403949
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