Aggregator
Box Supplies Over the Weekend
CREW CHIEF SIGN IN
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 02-23-26
Time : 07:15:32
Day : Monday
Shift : Day
Crew Chief : Mock
Program Deputy: Buttles
Team : B
Arm : RADCON
Designated SSO: Thomas
LERF Operator:
Operators : Thomas
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
RF On/Off turned HV Off
Gun HV Turned Off
RF On/Off turned RF Off
Gun HV Rampdown Initiated
RF On/Off turned HV Off
RF On/Off turned RF Off
COMMENT ON Measure Voltages of Laser Intensity Attenuator System in CEBAF
Box Supplies Were Turned Off
The following box supplies were TURNED OFF by version 2-16 of the Box Supply Cycling Script:
ARC1A Ramp Rate = 6.941 A/s
ARC2A Ramp Rate = 6.712 A/s
ARC3A Ramp Rate = 8.789 A/s
ARC4A Ramp Rate = 9.299 A/s
ARC8A Ramp Rate = 11.455 A/s
ARCAA Ramp Rate = 11.756 A/s
DOG2E Ramp Rate N/A
DOG4E Ramp Rate N/A
DOG5E Ramp Rate N/A
DOG6E Ramp Rate N/A
DOG7E Ramp Rate N/A
DOG8E Ramp Rate N/A
DOG9E Ramp Rate N/A
RSEP9A Ramp Rate = 8.846 A/s
XSEP2T Ramp Rate = 5.386 A/s
XSEP4T Ramp Rate = 4.802 A/s
XSEP6T Ramp Rate = 8.551 A/s
Reduced 1L19 to Target GSets
2L09 Reduced to Target GSets
QE Measurement
FSD Masking Tool: Successful System UN-Masking for: BeamLossMonitor
FSD Masking Tool: Successful System UN-Masking for: BeamLossMonitor
COMMENT ON RF HCO & Gradient Ramp 2026
The following cavities have been GSET 0: 1L21-7
The following cavities have been GSET 0:
1L21-7
Username: deir
Date/Time: 02-23-26_04:12:20
RF Status: Bad
Tuner Status: Good
Comment: GSET 0 - stepped off +100k - No CRFP: https://logbooks.jlab.org/entry/4469872
Special Instructions:
Maintenance Tag: Component: Operator Entry - See SME
MOLLER Install Update 02/22/2026
MOLLER Install Update 02/20/2026
Hall A techs continued process of preparing drilled holds for installation of anchors/epoxy. Hall techs contacted I & H, to test steel plates for lead, once bricks were removed. Techs preformed general house keeping.










