[clas_members] [New Logentry] RC Summary July 25 - July 26 Owl

[Sergey Boyarinov]

EC sector2 is not just communication problem - we lost triggers from sector 2, and very much all data from that sector. It seems HV for ecal/ltcc sector2 is off.
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From: clas_members <clas_members-bounces at jlab.org> on behalf of Axel via clas_members <clas_members at jlab.org>
Sent: Saturday, July 26, 2025 10:00 AM
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Subject: [clas_members] [New Logentry] RC Summary July 25 - July 26 Owl

RC Summary July 25 - July 26 Owl<https://logbooks.jlab.org/entry/4427470>

Lognumber 4427470<https://logbooks.jlab.org/entry/4427470>. Submitted by schmidta<https://logbooks.jlab.org/user/schmidta> on Sat, 07/26/2025 - 09:55<https://logbooks.jlab.org/entries?start_date=1753534526&end_date=1753541726&book=HBLOG>.

Logbooks:       HBLOG<https://logbooks.jlab.org/book/hblog>

This is the RC summary for Day Shift July 25 through Owl shift July 26.

This was another day of smooth running. The beam was good, and only a few DAQ/HV issues on our end, which were quickly resolved.
- 7/25 day shift summary: https://logbooks.jlab.org/entry/4426545
- 7/25 swing shift summary: https://logbooks.jlab.org/entry/4426847
- 7/26 owl shift summary: https://logbooks.jlab.org/entry/4427126

At the time of this writing, there are two issues that I note here:
- We have lost comms to EC sector 2 HV. This doesn't seem to be affecting the data taking. Nathan is currently working to resolve the issue. See: https://logbooks.jlab.org/entry/4427418
- The accelerator status is currently returning a proxy wide. This is site wide, not just Hall B. This issue was raised at the morning PD/RC meeting.

The plan for the first pass separator test on Tuesday is coming into focus. Work will begin at 10 AM, and accelerator estimates that beam will be interrupted for 1-2 hours starting about 10:30 AM. We will use this time to switch targets from helium-4 to hydrogen.

ABU for last 24h

- 18.0h of ABUs ~ 75% efficiency,

- Total ABUs since April 5th: 1190.7+18.0=1208.7 --> 1208.7 / (75.5 * 24) = 66.7%

- Day 112 of 151 scheduled: 112/151= 74.2%

- BANU: 1.3h almost entirely due to ATOF HV and DAQ issues.

Plan for today:
* Production on He with 325nA

RC meeting:

We will not have an RC meeting today or tomorrow. If any issues arise, please pick up the phone and call me, any hour: 757-575-7540.
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