Aggregator
COMMENT ON Tunnel Arc Magnet Flushing
COMMENT ON Vacuum Activities CEBAF 9/09/2026 through 12/31/26 (SAM26)
1L07. Completed insulating vacuum leak check. MDL 1e-9. Turbo pump actively pumping on insvac in preparation for 4k cool down.
Also leak checked questionable 1e-8 waveguide vacuum at cavity 7. No leaks detected. Flooded waveguide assembly & shot helium down the RF sweep.
COMMENT ON Upgrade Gamma SPCe PS Firmware for ARC A and Hall D Transport (2026 SAM)
iocsoftrfcrydev1 restoration failed
Operator SIGN IN
LOPW Readback issue for Chopper 1Y
Chopper 1Y is functioning fine, and RF hot checkout up to 1D in the injector was completed yesterday morning.
This appears to be a readback issue only.
The local oscillator power for Chopper 1Y (R012LOPW) appears to be low (1Y is about 0.023 mW while 1X, 2X, 2Y are all about 10-11 mW).
This issue alone is not substantial enough to pull the chassis, so LLRF will address this when something else motivates more thorough or involved injector work. It appears that this readback failed around May 2025.
APPROVED ISB crane operation with fall protection
final chopper checkout complete
Viewer application (with API) for 6GeV logbooks
A viewer application has been created to make it easier to access historic entries from the 6GeV era preserved in the old logbooks database. It contains log entries recorded between 2001 and 2013. When the current logbook was initially stood up in 2013, the most recent 5 years of data was imported, so data from 2008 - 2013 overlaps and is available from the current logbook application as well as this historic data viewer.
https://opsweb9.acc.jlab.org/elog6gev/ (the URL has been added to Useful Links)
COMMENT ON Electrical Testing of Arc Dipoles
COMMENT ON Routine CARM Maintenance & Calibrations (SAM 26)
COMMENT ON MPS system general maintenance tasks for 2026 SAM
COMPLETED Chiller mechanical pm's at 97
COMPLETED Building 98 mechanical pm's
iocsoftwatlowtcdev1 restored
Program Deputy Summary, presented 2026-10-14
Hall D - Daily Report
COMMENT ON Tunnel Arc Magnet Flushing
MCC IS UNSTAFFED
THOMSAS JEFFERSON NATIONAL ACCELERATOR FACILITY
MACHINE CONTROL CENTER UNSTAFFED STAMP
Date : 10/13/2026
Time : 23:24
Crew Chief On-Call : Forman
Program Deputy : Mock
The MCC is unstaffed. The following satisfies AOD and LOD requirements to leave the control room unstaffed:
SSO Comments: PLC Error/Unknown states expected










