[Hallc_running] [New Logentry] Hall C RC Update: Wednesday, Sept. 20, 2023

[gaskelld at jlab.org]

Logentry Text:
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Yesterday we focused on taking optics data at high momentum in the HMS (6.117 and 5.639 GeV).  During the day shift, MCC performed an arc energy measurement resulting in E = 10544.437 +/-4.136 MeV, with HALLC:p = 10533 MeV (0.1% difference).  Some parasitic data were taken with the NPS on during the optics running to check the VTP configuration. Late on owl shift, the crew transitioned to kinematic setting x50-2,  but after only a few minutes of data-taking MBE3H05 (the 2-dipole chicane that adjusts the beam height before the target) tripped off on a waterflow fault.

Today is an accelerator maintenance day and Hall C is in Controlled access.  Tasks planned for the access include troubleshooting the smaller Moller quad power supply polarity switch and MBE3H05, and work to recover some missing NPS calorimeter channels.

There will be the usual RC meeting today at 11 am.  Zoom information is below:

https://jlab-org.zoomgov.com/j/1617015555?pwd=L09IQ216dml6ZmM5ODExVjFsMXdsUT09

Meeting ID: 161 701 5555
Passcode: 288953

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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/4183273
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