Aggregator
The following cavity histories have been updated: 2L08-3
The following cavity histories have been updated:
2L08-3
Username: kerns
Date/Time: 02-24-26_15:38:56
RF Status: Good
Tuner Status: Good
Comment: RF recovered to 4 Mv/m after fil. bd. replaced. RF restored to 10.7 Mv/m.
Special Instructions:
Maintenance Tag: Component: Other
NL beam permit / SL in power permit
QuickPic - 2L15-3 OLT
"2L15-3 OLT"
CREW CHIEF SIGN IN
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 02-24-26
Time : 15:24:51
Day : Tuesday
Shift : Swing
Crew Chief : Richardson
Program Deputy: Buttles
Team : X
Arm : RADCON
Designated SSO: Schaumloffel
LERF Operator:
Operators : Schaumloffel
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
COMMENT ON Powering Up and Performing HCO on 10 AMP & 20 Amp Trim System after SAM 2025
Powered up all 10 amp trim racks in the SL. HCO completed. All magnets, except for ones located on the 2L25 and 2L26 girders, have been ran and cycled successfully. All looks well. We will get to the few remaining magnets when work on those girders are finshed.
The following cavity histories have been updated: 2L19-6
The following cavity histories have been updated:
2L19-6
Username: kerns
Date/Time: 02-24-26_15:24:55
RF Status: Bad
Tuner Status: Good
Comment: Very weak 2.5W amp needs to be replaced after RFCM replaced.
Special Instructions:
Maintenance Tag: Component: 2.5W Amp
RF On/Off turned RF On
Survey and Alignment work summary
COMMENT ON Removal and Installation of Girders 2L25A & 2L26A
25A. Girder vacuum connections completed. Actively pumping on girder overnight. Final leak check and Neg pump activation in the morning.
26A. Girder vacuum connections completed. Actively pumping on girder overnight. Final leak check was good. Neg pump activation tomorrow.
2L09-6 no CWWT voltage measured
PR for tracking: 2L04-2 RFCM not communicating
PR for tracking: 1L20-1 No CRFP
The following cavity histories have been updated: 1L05-8
The following cavity histories have been updated:
1L05-8
Username: evonda
Date/Time: 02-24-26_14:51:39
RF Status: Good
Tuner Status: Good
Comment: Fiber optic cable was inserted in the AIB side and resolved the readback issues.
Special Instructions: to run LEM at 940
Maintenance Tag: Component: Other
The following cavity histories have been updated: 2L08-3
The following cavity histories have been updated:
2L08-3
Username: kerns
Date/Time: 02-24-26_14:50:52
RF Status: Good
Tuner Status: Good
Comment: Filament board replaced and filaments acquired.
Special Instructions:
Maintenance Tag: Component: Filament Board {Removed SN: 332, Replacement SN: 014}
The following cavity histories have been updated: 1L05-3
The following cavity histories have been updated:
1L05-3
Username: evonda
Date/Time: 02-24-26_14:50:19
RF Status: Good
Tuner Status: Good
Comment: Filament board replaced for no readbacks.
Special Instructions: to run LEM at 940
Maintenance Tag: Component: Filament Board {Removed SN: 241, Replacement SN: 243}
COMMENT ON Vacuum Activities CEBAF 2/18/2025 through 2/18/26
COMMENT ON 0L03 Vibration Isolation Block
The following cavities have been unbypassed: 1L21-5
The following cavities have been unbypassed:
1L21-5
Username: alexs
Date/Time: 02-24-26_14:11:22
RF Status: Bad
Tuner Status: Good
Comment: Unbypassed - stepped on -100k - Reinstalled filament board, mod anode board, and klystron jumper
Special Instructions:
Maintenance Tag: Component: Filament Board {Removed SN: , Replacement SN: 310}, Component: Mod Anode Board










