Aggregator
APPROVED CHLII CT Isolation Valve Replacement
APPROVED Bldg 60 CUP - Seasonal Commissioning (Cx) of Chillers/Controls
COMMENT ON PSS General maintenance tasks for SAM 2026
COMMENT ON Vacuum Activities CEBAF 9/09/2026 through 12/31/26 (SAM26)
1L10. Closed up and reestablished insulating vacuum in preparation for leak check.
1L25. Continue setting up for VBV1L25B vat valve swap. 1L25 & 1L26 insulating vacuums at 760 torr. 1L25 downstream cold valve is closed. 1L26 upstream cold valve is closed. We'll be swapping the valve in the morning. VBV1L25B & VBV1L26A will be forced open for leak check. Beamline pump/RGA @ VIP1L26B
COMMENT ON Install C-100 style Vacuum Controls and Cable Install NL08 (2026 SAM)
COMMENT ON Tunnel Crack and Concrete Repair
Please be advised that the Notice to Proceed (NTP) was formally issued on October 14. The contractor is currently in the process of drafting the baseline schedule and construction master plan. Further updates will be distributed upon receipt and review of these documents.
Hall B daily SAM update
COMMENT ON Tunnel Crack and Concrete Repair
COMMENT ON Tunnel Arc Magnet Flushing
APPROVED Master Oscillator System - Obsolete 70 MHz Chassis Removal
APPROVED Leak Repair at BE Ground Water Pumps 10/11 SE stub
APPROVED 4K Cooldown of Cryomodules at 1L06 and 1L07
COMMENT ON Electrical Testing of Arc Dipoles
COMMENT ON Install C-100 style Vacuum Controls and Cable Install NL08 (2026 SAM)
Turned on Gamma power supplies and updated the pump sizes of the ion pumps that are installed on the new C75.
High potted and tested HV cables using approved HV simulator boxes. All HV cables are in good working order and ready to be plugged into C75 ion pumps/cold cathodes when it is installed.
COMMENT ON Investigate MWF1I04 and MWF1I06 Supplies
COMPLETED B.98 5-Year Extensive Electrical PMs
iocsb4 restored
COMMENT ON BPM Maintenance - SAM '26
iocw3se1 - beam sync chassis power (https://logbooks.jlab.org/entry/4550127)










