[Hallc_running] [New Logentry] Hall C, RC Report June 19, 2025

[hdbhatt at jlab.org]

Logentry Text:
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Yesterday, during the day shift we decided to continue data taking during the Hall A Beam Study, and were able to collect data for about 2.5 Hrs. Data talking was smooth during both the Day and Owl shifts,  for about 5.05 Hrs and 6.63 Hrs, respectively. The beam quality is excellent. The Beam current during the swing shift (after 3 pm) and throughout the swing shift was 0.33 uA, and later for Owl shift, we requested 0.30 uA and we are continuing data taking at this current. 

There was no DAQ (ROC8) crash during data taking after yesterday's day shift TO (Kei Nagai) rebooted ROC8 after run 23261 (following Hanjie's recommendations)
https://logbooks.jlab.org/entry/4400448 (the instructions can be found here : https://hallcweb.jlab.org/wiki/index.php?title=Hall_C_DAQ). However, there was one DAQ crash issue releted to PEB, while starting a new run,  during the swing shift https://logbooks.jlab.org/entry/4400865, and simple reset worked.
So, looks like we should reboot the ROCs if any of the them crash frequently (2-3 times in a shift).

There were minor issues (likely due to communication errors) that resulted in a target alarm during the Owl Shift, and was resolved https://logbooks.jlab.org/entry/4401129

Run Plan: Continue data taking at the current configuration and to take 2 single arm runs during the swing shift

We will NOT have a RC Meeting today.


Day Shift: 
Summary: https://logbooks.jlab.org/entry/4400356
BTA: https://logbooks.jlab.org/entry/4400604
Checklist: https://logbooks.jlab.org/entry/4400555

Swing Shift: 
Summary: https://logbooks.jlab.org/entry/4400624
BTA: https://logbooks.jlab.org/entry/4400870
Checklist: https://logbooks.jlab.org/entry/4400863

Owl Shift:
Summary: https://logbooks.jlab.org/entry/4400874
BTA: https://logbooks.jlab.org/entry/4401151
Checklist: https://logbooks.jlab.org/entry/4401030
Strip Charts: https://logbooks.jlab.org/entry/4401136 https://logbooks.jlab.org/entry/4401124

More information:
https://hallcweb.jlab.org/wiki/index.php?title=June_19,_2025


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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/4401192
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