[Hallc_running] [Revised Logentry] RC daily update

[simona at jlab.org]

Logentry Text:
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We ran efficiently since the last RC update. For yesterday's day and swing shifts the BANU was less than 0.5 hours per shift so Hall C was using the beam very efficiently. MCC delivered very stable beam as well. During the owl shift we had several DAQ crashed and the lost beam time due to those amounted to about 1.5 h. 
Shortly after 6 am this morning MCC interrupted beam delivery for the usual QE measurement. Upon beam restoration MCC had issues with running the "FudgeIt" application (https://logbooks.jlab.org/entry/4361386) and then more issues with BLM trips at higher passes (https://logbooks.jlab.org/entry/4361396). When beam was restored to Hall C one of the target orbit lock correctors railed trying to maintain our ideal beam trajectory into the target. MCC needed to do some resteering. We turned off the HV for GEMs and LAD. After resteering the beam positions were stable and the orbit locks showed reasonable Bdls but some quads in the C line needed to have trim cards swapped (https://logbooks.jlab.org/entry/4361430). Beam for production was restored to Hall C close to 8:30 am. We checked that the beam positions are stable and then we turned back ON the HV for GEMs and LAD and started production runs on LD2 at 0.3 muA.

There will be no RC meeting today.

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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/4361586
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