[Halla_running] [New Logentry] RC Report for 23-Jun-2025

[covrig at jlab.org]

Logentry Text:
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Key updates for the past 24h (Sun Day+Swing and Mon Owl):
 - 17.93h actual beam delivery on target. The beam was down for about 6h with major culprits RF and vacuum issues.
 - On our side we were down for less than 2h during beam delivery, which accounts for 9.5% of wasted beam time, a big improvement on previous recent 24h periods.
 - Opportunistic access by SL CH Leung during Day on Sun to power cycle a power strip, which improved coms in daq: https://logbooks.jlab.org/entry/4403280
 - DAQ on-call until Jul 10: primary C. H. Leung (217-693-1360), secondary Chandan (757-342-4035).

 - Total Accumulated Charge at Kin3 so far: 30.49 C (Goal: 100 C)
 - Total Accumulated Charge at Kin3 since June 18 Swing: 5.49 C 

Run plan: Continue production on the 30 cm LH2 target cell (loop 1) at 22 µA.

Current issues:
 - The last 24h have been quieter with respect to daq crashes, we only have 9.5% of "deadtime" in this period. The beam was also off during Owl, 2-3am, this may have helped our numbers some.
 -  APV baseline sagging/broadening: HV test showed a significant reduction of the width at lower gain.
 - Online zero suppression performance (common-mode min values for online zero suppression were changed to zero for the first iteration of averaging until we are ready to deploy ROI readout and histogramming firmware).
 - HCAL calibration/trigger efficiency, almost complete, still waiting on replays to finish.

Shift summaries:
22-Jun-2025 D https://logbooks.jlab.org/entry/4403223
22-Jun-2025 S https://logbooks.jlab.org/entry/4403448
23-Jun-2025 O https://logbooks.jlab.org/entry/4403639

Shift BTA:
22-Jun-2025 D https://logbooks.jlab.org/entry/4403426
22-Jun-2025 S https://logbooks.jlab.org/entry/4403633
23-Jun-2025 O https://logbooks.jlab.org/entry/4403867

We will have our daily RC meeting at 1pm in the conference room on the second floor of the CH and on zoom.
Zoom info:
Join ZoomGov Meeting
https://jlab-org.zoomgov.com/j/1616220064
Meeting ID: 161 622 0064
Passcode: 314159


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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/4403979
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