THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 06-20-21
Time : 02:10:48
Day : Sunday
Shift : Owl
Crew Chief : Surles-Law
Program Deputy: Carlino
Team : X
Arm : RADCON
Designated SSO: Garcia
Operators : Garcia
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
Radiation area signs flipped prior to turning on C100s.
Noted mention of this for the NL/SL C100 klystron galleries when Accelerator in Beam Permit in RWP 2021-S011, but couldn't find mention of only RF turn-on operation in current 2021 RWPs.
Can mask the HV permit on cavity 4 to get it into hv, but no rf do to BLVF . The CPS is not showing on when it really is. We have cathode current on all klystrons but no CPS voltage or current readbacks. E. Valentine worked on this on Friday but we didn't have permit to check. Still not working.
Late entry from home that I made at 1100 am but forgot to enter logbook so it didn't go !!! Dang it !! Load resistors in zones NL02, NL04, NL06, NL12, NL13, NL18, NL19, and NL20 were removed last Thursday to get these zones into HV for PSS. They do not have cathode current (KCCU) without loads and will not produce RF. For this reason, they should not be put into RF or they will just indicate sos'ing !!! Check the EXPERT page off the combo screen to see if there is KCCU. If 0.0 amps, leave RF off and log it. Thanks you all !!
Cavity 5 klystron current was low, but RF experts managed to goose it up.
All cavities' phase and gradient loops were saved Open in expert mode, dropping zone out of HV each time expert mode was engaged. Corrected.
All cavities open-loop tuned.