[Sbs] [New Logentry] RC Report for 20-Jun-2025

[covrig at jlab.org]

Logentry Text:
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Key updates for the last 24h:
 - Beam delivery has been excellent, average trip rate 7/h over the past 24h (as reported at the 8am MCC meeting)
 - MCC to decide if they will attempt to repair 2L18 today, before the weekend. The issue: there is no head room for the SL. If any other cavity goes down in SL there may be significant down time for repairs.
 - Riad announced that the current laser spot is getting to the tail end of its lifetime and a spot move is planned over the next 7-10 days. Should we consider a Moller measurement before the spot move?
 - HCAL threshold changed to 15%, per Mark's recommendation, running at this setting since about 11am 19-Jun-25.
 - As for the previous 24h, during this period too most of the experimental down time was caused by DAQ crashes. If I count from BTAs we lost 6-7h of beam time over the past 24h due to DAQ! Can something be done about it?

 - Total Accumulated Charge at Kin3 so far: 26.8 C (Goal: 100 C)
 - Total Accumulated Charge at Kin3 since June 18 Swing: 1.8 C

Run plan: Production on the 30 cm LH2 target cell (loop 1) at 22 µA, with the current settings for GEMs, ECAL and HCAL (unless subsystem experts want to change them).

Shift summaries:
 19-Jun-2025 D https://logbooks.jlab.org/entry/4401145
 19-Jun-2025 S https://logbooks.jlab.org/entry/4401359
 20-Jun-2025 O https://logbooks.jlab.org/entry/4401558

Shift BTA:
 19-Jun-2025 D https://logbooks.jlab.org/entry/4401507
 19-Jun-2025 S https://logbooks.jlab.org/entry/4401551
 20-Jun-2025 O https://logbooks.jlab.org/entry/4401818

RC Daily Meetings1:00 PM , via Zoom and in person in the counting house meeting room (2nd floor).
No meeting planned for the weekend, unless something important comes up.

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/4401888
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