[Halla_running] [New Logentry] Hall A RC report - May 20th, 2025

[arunts at jlab.org]

Logentry Text:
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We took production data at 18uA during the day, swing and owl shifts. During the swing shift, the beam current, thresholds of ECAL and HCAL were tweaked while watching the DAQ live time (https://logbooks.jlab.org/entry/4378590). Other than CODA crashes (https://logbooks.jlab.org/entry/4378366), occasional GEM HV trips (both addressed by alert experts) and HCAL timing shifts, we continue to collect smooth production data. Wednesday is maintenance day and MCC hopes to close the halls and provide beam by 2:30 pm. The work that needs to be done in the hall is listed below. Let's have an RC meeting today at 1:00 pm EST to discuss more. The zoom connection details are below.

Zoom link: https://jlab-org.zoomgov.com/j/1616220064
Meeting ID: 161 622 0064
Passcode: 314159

Work in the hall tomorrow during maintenance day:
1. Alex needs an FADC surveyed and taken out of the hall
2. DC power needs to look at Q4 power supply issues for Moller
3. GEM experts and Hall A Techs need to remove the lead wall, repair some layers, and reinstallation the lead wall.
4. Don wants to look at the ECAL heater system
5. HCAL firmware upgrade to address the timing shift issue (remote work)

ECAL alarm handler issues addressed: https://logbooks.jlab.org/entry/4378498
Recovery of ECAL temperatures: https://logbooks.jlab.org/entry/4378602


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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/4379235
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