A network analyzer is presently connected to cavity 7 in 1L12 to measure the resonant frequency after pumpdown to 2.07 K. REF and PROBE cables are also disconnected from the control module for the same reason.
The resonant frequencies of all 8 cavities will be measured, then all cables will be reconnected to the control modules. Larry King is helping with this task.
Resweep N. Linac, Do injector studies once NLinac is in proper state, recover RF skipping 1L12 until it is filled, no LEMMING, push cavities to DRVHs, turn off and submit OPS-PR for problem children to be addressed tomorrow, GSET=0 for 1L25-8. Wear masks appropriately at all times.
NL dropped to indeterminate state from controlled access. I was able to safely process two individuals into the North Linac. However, when they were leaving, the door locks would not disengage. One person was actually stuck in the personnel access trap. There was nothing unusual seen under the section labeled 'North Access Room.' Switch A, B to the right of the Exch Key were both labeled red and the release indicator (square) was red. This was normal because one of the keys were not returned.
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 07-15-20
Time : 15:39:42
Day : Wednesday
Shift : Swing
Crew Chief : Forman
Program Deputy: McGuckin
Team : X
Arm : RADCON
Designated SSO: Mock
Operators : Mock
This stamp certifies that the above Crew Chief has read/reviewed/received the following: