Aggregator

Log Number: 4527890Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19.5 was unsuccessfully run for the North Linac on 2026-07-20 16:21:25. The operation terminated after 00:00:01 with the following results.
Cavity summarySuccess: 0 Abort: 200 Fail: 0

Log Number: 4527885Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17473Title:
1L09-5 stuck on Cav FSD fault

Summary:
Ops unable to recover, Rama cleared fault and brought cavity back into RFDuration:
6 minutes

Time Down:
20-Jul-2026 16:10

Log Number: 4527884Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17473Title:
1L09-5 stuck on Cav FSD fault

Summary:
Ops unable to recover, Rama cleared fault and brought cavity back into RFDuration:
6 minutes

Time Down:
20-Jul-2026 16:10

Log Number: 4527883Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19.5 was successfully run for the North Linac on 2026-07-20 16:19:48. The application phase took 00:00:17 to complete.

Log Number: 4527882Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
1L15-4
Username: bschauml
Date/Time: 07-20-26_16:16:37
RF Status: Good
Tuner Status: Good
Comment: DRVH=10.000 Arc Rate Management
Previous OPS DRVH: 11.5
Special Instructions:

Log Number: 4527877Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17472Title:
Bringing back 1L15-4 to give us a better trip rate

Summary:
Bringing back 1L15-4 to give us a better trip rate.

Log Number: 4527876Logbook(s): 

• ELOG
• SRFLOG

Body: 

No major update.

Log Number: 4527875Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been UnGSET 0:
1L15-4
Username: bschauml
Date/Time: 07-20-26_16:12:44
RF Status: Good
Tuner Status: Good
Comment: UnGSET 0 - stepped on -100k - Trying Lower Gradient, Per ELOG 4527803
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4527871Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Yoon
DATE:             07/20/2026
SHIFT:               Swing

The operator has read the following:

• ELOG
• PD Shift Plan
• Radiation Surveys for PSS Segments in Controlled Access
• PSS Log

Log Number: 4527860Logbook(s): 

• ELOG

Entry Makers: lhansenBody: A corrective action for an Assessment / Audit / Management has been completed in the JLab Corrective Actions Tracking System.

Org: Environmnt,Safety &Health
Corrective Action:
Evaluate implementation of PA announcements via the Cisco desk phones during severe
weather alerts (Tornados only)

Closure Evidence: Memo to file on decision

You can view this corrective action here:
https://misportal.jlab.org/ehs/tracking/view_action.php?action_id=42036

Log Number: 4527857Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-07-20 15:41:59 The output from the myRestore execution was as follows: iocsoftw4spce systemEnum@2026-07-20 15:41 2(2) restored Execute: /usr/csite/certified/bin/ced2Epics -ced ced -A -i iocsoftw4spce (success) PVs modified: 0 PVs modified: 0 PVs modified: 0 PVs modified: 0 PVs modified: 0 PVs modified: 0 PVs modified: 0 Procedure return status: Success

Log Number: 4527840Logbook(s): 

• ELOG
• LERFLOG

Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 07-20-26
Time : 15:24:44
Day : Monday
Shift : Swing

Crew Chief : Forman
Program Deputy: KLarrieu
Team : F
Arm : Schaumloffel
Designated SSO: Yoon
LERF Operator:
Operators : Schaumloffel, Yoon

This stamp certifies that the above Crew Chief has read/reviewed/received the following:

Log Number: 4527837Logbook(s): 

• ELOG

Entry Makers: chumphryBody: 

Log Number: 4527830Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: CW beam to B/C/D.

Log Number: 4527827Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

Body:  Accelerator PHYSICS STUDIES RESTORE ACC DOWN OFF (SAM) Planned 8 0 0

Log Number: 4527819Logbook(s): 

• ELOG

Body: 

Once the PTW is on-issue this task is approved to occur during 7/21 maintenance day.

Log Number: 4527817Logbook(s): 

• ELOG

Body: 

Added to 7/21 SAM Cal.

Log Number: 4527811Logbook(s): 

• CLOG
• ELOG

Entry Makers: mptBody: 

Unit back on line.

Log Number: 4527807Logbook(s): 

• ELOG

Entry Makers: chumphry

Log Number: 4527804Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD