[Halla_running] [Revised Logentry] late RC summary Hall A July 17 2025

[pentchev at jlab.org]

Logentry Text:
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Dear Collaborators,

We were taking production data at 20 uA on LH2. Yesterday Hall C started ramping up and initially for a short time the beam was tripping often. Our running efficiency was ~84%. There was ~3h accelerator down due to RF issues. We are in restricted access since 11:10, but now started locking the Hall. 

Important events to your attention:
- One HCAL HV channel couldn't keep HV - https://logbooks.jlab.org/entry/4419554, Jiwan fixed it today during the access
- GEM L15M1 (one of the Isobutane candidates) tripped and voltage was reduced - https://logbooks.jlab.org/entry/4419880 
- Communication issue with ECAL was fixed by Kip
- There was a PSS problem this morning and the access to the Hall was delayed till 11:10 - we ended up in restricted access.
- Ibrahim and Imani discussed in the Hall the Iso gas system - expecting approval soon.

Experiment progress:
-Charge collected during the last ~24 hour period: 1.26 C
-Total accumulated charge at Kin3 so far: 58.63 C (Goal 100 C)
-Total accumulated charge at Kin3 since July 16 : 1.26 C
-Effective experiment running efficiency since July 16 Day shift (ABU tot)/(AU tot + BANU tot): 83%

Shift summaries:
07/16/2025 DAY: https://logbooks.jlab.org/entry/4419097
07/16/2025 SWING:https://logbooks.jlab.org/entry/4419451
07/17/2025 OWL:https://logbooks.jlab.org/entry/4419676

BTAs:
07/16/2025 DAY:  https://logbooks.jlab.org/entry/4419452
07/16/2025 SWING: https://logbooks.jlab.org/entry/4419665
07/17/2025 OWL: https://logbooks.jlab.org/entry/4419951

We had already a RC meeting today at 1 pm in the conference room in 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

First day as a Hall A RC
Lubomir Pentchev


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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/4420188
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