Aggregator
COMMENT ON 2025 SAM transformer installs
AES Electricians have disconnected the AC Lines from the external transformers in 1L09, 1L12, 1L13, & 2L05.
The diode stacks were disconnected from the external transformer and placed in front of 2L05. The bolts for the Transformer that's located inside of 2L05 CPS were removed to prepare for removal.
COMMENT ON IDX installation * 5 (SAM 2025-2026)
CREW CHIEF SIGN IN
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 09-11-25
Time : 15:47:14
Day : Thursday
Shift : Swing
Crew Chief : Merz
Program Deputy: RadCon
Team : C
Arm : RADCON
LERF Operator:
Operators :
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
COMMENT ON Site Honeywell (LCW) Controls Calibrations
COMMENT ON Install four 12A LNS in NL01B11
iocr999rffcc1 restored with warnings
Vacuum Group Summary 2025-09-11
Injector
- IHA0L03, IHA0L10 leak checks both look good
- DP Stations reactivation (VDP0L03 and VDP0L10) on hold due to electrical issue, waiting on breaker swap to proceed further
AS_Line through west arc AA_Line
- Ion pumps VIPAS02 to VIPAA18 powered off
- Vent scheduled for tomorrow morning
2L18
- Waveguide turbo pump restarted, not dead after all
- Gate valve open, turbo at full speed
COMMENT ON Telephone check during Accelerator Down
COMMENT ON Gun HVPS SF6 tank 75 PSIG relief valve swap with tested / certified valve
The HVPS tank was topped to nominal 60 PSIG, completing task 10. Task 11 was repeated today, no SF6 leaks found. Details: https://logbooks.jlab.org/entry/4456961
The boundary work area around the gun HVPS tank has been removed.
We will not perform task 12. The DILO SF6 gas recovery cart will remain in the CEBAF injector tunnel, as a dedicated system for the gun HVPS SF6 tank.
The only remaining task is 13. I will remove the admin LOTO on Monday Sept 15.
iocsoftrfcmtype restored
COMMENT ON Accelerator Warm Region Beamline/Component removal and reinstallation work
COMPLETED NL26B11 Chassis Relocation
COMPLETED Switchover of Existing Central Chilled Water System Chillers and Cooling Tower 58-CT-1 to New JCI Controllers and Programming
Building 60 chilled water system and associated cooling tower equipment has been successfully switched back to automatic control. I will submit another Atlis when the subcontractor is ready to begin startup of the two new 800 tons chillers and associated equipment.