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COMMENT ON Post SAM FE onset measurements C75 and C100 cryomodules
QuickPic - MBC4R03H mismatched, and stays mismatched after cycling
Program Deputy Summary, presented 2026-08-21
COMMENT ON: Measure R30-4 gun optics at 140 kV
Heat & Activation done under ATLis https://tasklists.jlab.org/atlis/tasks/121145
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Control Room Fully Staffed
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CREW CHIEF SIGN IN
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 08-21-26
Time : 08:05:01
Day : Friday
Shift : Day
Crew Chief : Schoene
Program Deputy: Park
Team : B
Arm : Barker
Designated SSO: Thomas
LERF Operator:
Operators : Barker, Thomas, Shenenberger
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
Crew Chief Shift Log, 2026-08-21 SWING
IPMAS04 has been enabled
Crew Chief Timesheet Summary: 21 Aug 2026 OWL
Crew Chief Timesheet Summary: 20 Aug 2026 SWING
COMMENT ON Commissioning of Helicity Decoder Board
Results from first look at the timing of the signals:
https://logbooks.jlab.org/entry/4543891
Need to figure out why Tsettle is starting 50 us after Beam Sync.
Follow-up Re: Many Trims Mismatching in North Access, Correlates w/ Room Temperature
MCC -> reduced staffing (SSO+ Crew Chief on call) PSS Mode 0
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Many Trims Mismatching in North Access, Correlates w/ Room Temperature
The room temperature is jumping up about 10 degrees every 1.5 hours and seems to be associated with many trim magnets in the room mismatching at once. I can't head out there at the moment, but I'll drop by on my way out to see if anything is amiss. For the time being, I'm OPS-PRing this because it just seems very strange.
COMMENT ON Perform rfMiram12GeV 1-0
Ran Miram curves program in 2L15 first. Picked a zone with no bypassed cavities, Klsytron jumpers removed, or known issues with high KMAI. Cavities in 2L15 did not show high KMAV or KMAI during testing. Program ran to completion and Plots of curves attached here ("2L15_20260820_MiramPlots.png").










