Aggregator
The following cavity histories have been updated: 1L21-1
Log Number: 4472643Logbook(s): Tags: Body:
The following cavity histories have been updated:
1L21-1
Username: jkt
Date/Time: 02-23-26_15:30:17
RF Status: Good
Tuner Status: Good
Comment: recovered ( turned off for high current run)
Special Instructions:
Maintenance Tag: Component: Other
COMMENT ON C75 2L03 C100 1L26 Alignment
Log Number: 4472642Logbook(s): Body:
Both the 2L03 & 4cryomodules and the quad magnet are set to 2B tolerance (0.28 mm), and all flanges on the girder are set to <1 mm. In the attached picture, the flange labeled “MQB2L04_DS” — the upstream flange of the spool piece connected to the pump drop — is more than 4.5 mm BR. Since the typical beampipe tolerance for warm-region girders is <3 mm, this 4.5 mm offset will slightly reduce the clear aperture.
What is not shown are the offsets for the flange labeled “CA2L04_US,” which measures 0.34 mm BR and 0.00 mm vertically.
The following cavity histories have been updated: 2L08-3
Log Number: 4472641Logbook(s): Tags: Body:
The following cavity histories have been updated:
2L08-3
Username: kerns
Date/Time: 02-23-26_15:26:43
RF Status: Bad
Tuner Status: Good
Comment: Filament volt high fault. Bypassed and stepped off +100k.
Special Instructions:
Maintenance Tag: Component: Filament Board
CREW CHIEF SIGN IN
Log Number: 4472639Logbook(s): Body:
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 02-23-26
Time : 15:18:41
Day : Monday
Shift : Swing
Crew Chief : Richardson
Program Deputy: Buttles
Team : X
Arm : Yoon
Designated SSO: Chaudhary
LERF Operator:
Operators : Chaudhary, Yoon
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 02-23-26
Time : 15:18:41
Day : Monday
Shift : Swing
Crew Chief : Richardson
Program Deputy: Buttles
Team : X
Arm : Yoon
Designated SSO: Chaudhary
LERF Operator:
Operators : Chaudhary, Yoon
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
The following cavity histories have been updated: 1L05-7
Log Number: 4472637Logbook(s): Tags: Body:
The following cavity histories have been updated:
1L05-7
Username: jkt
Date/Time: 02-23-26_15:18:28
RF Status: Good
Tuner Status: Good
Comment: This is quenching at 4Mv/m. Need pulse processed
Special Instructions:
Maintenance Tag: Component: Other
Survey and Alignment work summary
The following cavity histories have been updated: 1L05-8
Log Number: 4472635Logbook(s): Tags: Body:
The following cavity histories have been updated:
1L05-8
Username: jkt
Date/Time: 02-23-26_15:17:31
RF Status: Good
Tuner Status: Good
Comment: Readback issues in the HPA screen values. read the CRFP till we fix
Special Instructions: to run LEM at 940
Maintenance Tag: Component: Other
The following cavity histories have been updated: 1L05-3
Log Number: 4472634Logbook(s): Tags: Body:
The following cavity histories have been updated:
1L05-3
Username: jkt
Date/Time: 02-23-26_15:15:41
RF Status: Good
Tuner Status: Good
Comment: recovered but need pulse processed. have readback issues in HPA values
Special Instructions: to run LEM at 940
Maintenance Tag: Component: Other
FSD Masking Tool: Successful System UN-Masking for: BeamLossMonitor
FSD Masking Tool: Successful System Masking for: BeamLossMonitor
HYST AREA 7-0 Cycles Magnets
COMPLETED (B02 S. Linac) Relocate (2) exit signs being blocked
FSD Masking Tool: Successful System UN-Masking for: BeamLossMonitor
COMMENT ON DC Power Work Assisting YBBS06 Repair
COMMENT ON PSS Runtime Miscallenous Repairs
FSD Masking Tool: Successful System Masking for: BeamLossMonitor
FSD Masking Tool: Successful System UN-Masking for: BeamLossMonitor
iocsoftnl05rf restored
Log Number: 4472619Logbook(s): Tags: Body: restorelib 3.0.1
Target restore date was 2026-02-23 14:20:16
The output from the myRestore execution was as follows:
iocsoftnl05rf
<NOTE> rf3int: Provided macro *IOC* is never used
<NOTE> rf3int: Provided macro *REBOOTPATH* is never used
<NOTE> rf3hpa: Provided macro *IOC* is never used
<NOTE> rf3hpa: Provided macro *REBOOTPATH* is never used
<NOTE> rf3stp: Provided macro *IOC* is never used
<NOTE> rf3stp: Provided macro *REBOOTPATH* is never used
<NOTE> rf3fcc1: Provided macro *IOC* is never used
<NOTE> rf3f
The following cavity histories have been updated: Zone 1L19
Log Number: 4472617Logbook(s): Tags: Body:
The following cavity histories have been updated:
Zone 1L19
Username: mock
Date/Time: 02-23-26_14:19:36
RF Status: Bad
Comment: All cavities are failing Arc test intermittently. Both auto and manual tests. SRF recommended downgrade zone in SRM and GSET0 cavities until issue is resolved. OPs-PR: https://logbooks.jlab.org/entry/4468320
Special Instructions:
Maintenance Tag: Component: Operator Entry - See SME
Shift Information
| Shift | Owl |
|---|---|
| CEBAF Program | |
| MCC Crew Chief | Deir |
| MCC Operators | Smith |
| Program Deputy | Buttles |
| Announcements |
Access Status
Recent PSS History
