Aggregator
COMMENT ON MPS system general maintenance tasks for 2025 SAM
COMMENT ON MST magnet installation and related magnet work at 1L09,2L03, 2L25, 1L26
COMMENT ON Adjust Airflow interlock on shunt chassis associated with the ODD dogleg power supplies
COMMENT ON MST magnet installation and related magnet work at 1L09,2L03, 2L25, 1L26
Field Emission around NL22 as seen by the NDX detectors
Observed the field emission from the NL22 Cavity 1 earlier today. NDX NL22 photon dose rate increase was about 50 mR/h correlated with the gradient increase from zero to 10 MV/m in Cav.1. NDX NL22 and NL23 are currently set in the high sensitivity mode (10 pF capacitor and 5 sec integration time)
COMMENT ON Replace Multiple Faulty 20A SCE
APPROVED Replace Multiple Faulty 20A SCE
North Access Rack Room Very Hot
DC Power noted that the rack room in the North Access building is very hot. This is not good for the trim cards in that room. The door to that room has been propped open as a mitigation but this is not a permanent solution. Additionally, the temp readback in that room doesn't appear to be representative of the actual temperature (see figure 1).
iocse17 restored
iocse20 restored
iochlc3 restored
Program Deputy Summary, presented 2026-02-06
Operator SIGN IN
COMPLETED B999 Replace lamps out throughout the Tunnel.
COMPLETED B999 Replace defective exit light fixture
CREW CHIEF SIGN IN
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 02-06-26
Time : 07:34:22
Day : Friday
Shift : Day
Crew Chief : Blackshaw
Program Deputy: Mock
Team : E
Arm : RadCon
Designated SSO: Janak
LERF Operator:
Operators : Janak
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
COMMENT ON RF HCO & Gradient Ramp 2026
Started gradient recovery for 1L02. Ran out of time so more may be recovered. Updated spreadsheet. Log : https://logbooks.jlab.org/entry/4468800










