[Halla_running] [New Logentry] RC Report for 27-Jun-2025

[cisbani at jlab.org]

Logentry Text:
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Key updates for the past 24h (Thu Day+Swing and Fri Owl):
- HCAL threshold increased to 20% yesterday before 12:00AM during Vertical RF Separator investigation beam downtime
- During Swing production runs, frequent trips of one back tracker GEM module (L15M1) and corresponding DAQ crashes; after investigation by the expert, the module HV has been switched off (from ~8PM);
- No extended DAQ crashes since Ben GEM VTP firmware upgrade (end of Wed/25 Swing)
- DAQ on-call until Jul 2: primary: Chandan (757-342-4035); secondary: C. H. Leung (217-693-1360)

- Total Accumulated Charge at Kin3 so far: 34.77 C (Goal: 100 C)
- Total Accumulated Charge at Kin3 since Jun 25 noon: 2.35 C

Run plan:
- Continue production on LH2 at 25 uA;
- starting from 11:00AM beam maintenance for about 1 or 2 hours; GEM expert will have a short access to check gas flow meter
- Possible Moller measurement before next Wed to be discussed
- Wein filter test for Moller postponed to Mon/30 during DAY shift

Current issues:
- HCAL calibration/coefficients tuning

Shift summaries:
26-Jun-2025 D https://logbooks.jlab.org/entry/4405974
26-Jun-2025 S https://logbooks.jlab.org/entry/4406342
27-Jun-2025 O https://logbooks.jlab.org/entry/4406472

Shift BTA:
26-Jun-2025 D https://logbooks.jlab.org/entry/4406243
26-Jun-2025 S https://logbooks.jlab.org/entry/4406456
27-Jun-2025 O https://logbooks.jlab.org/entry/4406661

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/4406757
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