Aggregator
COMMENT ON Hall B and Bldgs 91 & 92 Electrical PM
Homed laser steppers
Homed x/y stage as well as all four attenuator steppers. All of them had lost their reference position due to the power outage, causing the TMG tool to get stuck trying to move the motors past the limit switches.
However, homing the attenuators seems to have incorrectly reproduced the previous reference position at least in the case of D, which now has its minimum power at position 310. The others look reasonable: A 75, B 110, C 85. I tried homing D again and got the same result. This will need to be looked at but doesn't preclude the use of the TMG tool with the present configuration.
APPROVED ONGOING VME Crate Swaps (SAM 2025-2026)
iocea6 restoration failed
COMMENT ON CEBAF/Halls PSS Certification SAM25
2L25 Filling to 90%
Program Deputy Summary, presented 2025-12-04
iochelgen restored
COMMENT ON CEBAF/Halls PSS Certification SAM25
SSG will perform CEBAF PSS tests in preparation for the upcoming system certification.
Tests planned for the swing shift on Thursday December 4th cover Halls B and C, BSY and South Linac. It's possible other segments might be swept as well.
Work will start around 3 PM with individual segments swept one at a time.
APPROVED Hall B and Bldgs 91 & 92 Electrical PM
COMMENT ON Hall B and Bldgs 91 & 92 Electrical PM
COMMENT ON Hall B and Bldgs 91 & 92 Electrical PM
COMMENT ON Hall B and Bldgs 91 & 92 Electrical PM
COMMENT ON Startup of Two Additional Central Chilled Water System Chillers and Associated Primary and Secondary Pumps and Final Commissioning
cebaf laser HCO work
I planned to do a laser HCO this afternoon once the power outage was over. However the laser RF was not available due to an issue with the 1427 MHz amplifier. I turned lasers back on after was told the RF was ready but the RF frequency was not recovered from previous setting at 250MHz, so did a manual reset. Then did a partial HCO by checking the laser power and waveforms at different laser modes.
CIS Work Summary 12/03/2025
MOLLER Install Update 2025
SBS removal: All experimental platforms(SBS, ECal, CDet, and HCal) have all been removed from Hall. Target Chamber and Ladder are removed from pivot but remain in hall. We are working to secure storage location for these items. Regions 1 through 3 of upstream beam line girders, stands and grout pads have been removed. The 5 meter girder will be moved to ESB today, the upstream stands stored in tent 4 on site. Exit beam line pipe, stands and grout pads removed from pivot to beam dump. Awaiting intermodal to clear remaining RAD waste in Hall.
Lawrence










