Aggregator

Log Number: 4531038Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been GSET 0:
1L12-4
Username: samari
Date/Time: 07-25-26_00:29:05
RF Status: Good
Tuner Status: Good
Comment: GSET 0 - stepped off +100k - test, WG pressure
Special Instructions: , HPA breaker tripped

Maintenance Tag: Component: Other

Log Number: 4531033Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Samari
DATE:             07/25/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4531032Logbook(s): 

• ELOG
• RFLOG

Body: 

The leak has been isolated to 1L12-5 but no source of the leak can be seen upstairs. New tubing has been fabricated and attached but has not resolved the issue. Workers used Spotter to aid leak detection but could find no source of the leak upstairs. Both workers have been on the job as long as is allowed so work is being paused until morning when more support will be available.

Log Number: 4531028Logbook(s): 

• ELOG
• RFLOG

Entry Makers: dturnerBody: smartRAT V3-5 on opsrfdaqnl1

To view waveforms from a timestamp:

ssh opsrfdaqnl1 "smartRAT -m DAQ -d /data/fast_daq/<timestamp>"


To view waveforms of the top 25 from this report:

ssh opsrfdaqnl1 "smartRAT_view_daily_top25 2026-07-17-2026-07-24"


Data directory: /cs/prohome/apps/s/smartRAT2/3-5/fileio/pca_data/output_cavityOutDet/calibrated_cavitylevel_centralize_tsfresh_minimal_gmespmes/whole/rcntnp/2026-07-17-2026-07-24/PCA/

Log Number: 4531024Logbook(s): 

• ELOG
• LERFLOG

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

Date : 07-24-26
Time : 23:18:49
Day : Friday
Shift : Owl

Crew Chief : Deir
Program Deputy: KLarrieu
Team : A
Arm : Smith
Designated SSO: Samari
LERF Operator:
Operators : Samari, Smith

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

Log Number: 4531023Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Machine restoration in progress.

Log Number: 4531022Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4531017Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

Just heard from the crew and they think they may have found the issue.

Log Number: 4531009Logbook(s): 

• DCLOG
• ELOG

Entry Makers: yoonBody: 

took setpoint and cycled, no TC swap needed

Log Number: 4531003Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

Log Number: 4531002Logbook(s): 

• DCLOG
• ELOG

Entry Makers: yoonBody: 

took setpoint and cycled, no TC swap needed

Log Number: 4530999Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

Down for 1.5 hours due to1L12 Waveguide Pressure fault that dropped INJ/NL from Beam Permit to Power Permit. RF onsite getting paperwork approved.

Log Number: 4530998Logbook(s): 

• ELOG

Body: 

Crew Chief approved... Waveguide Pressure fault dropped the INJ/NL to Power Permit. As soon as paperwork is completed, the work can begin.

Log Number: 4530993Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

Gathering tools as this may be a busted hose. Ops runner is going to check for water.

Log Number: 4530991Logbook(s): 

• ELOG

Body: 

ReCap ran from opsl01
Restore from: 2026-07-24 18:09:00
Comments: Attempting to Restore xD Orbit

Restore
39(39) restored

List of magnet PVs:
MDB0L06H.BDL MDJ0L07V.BDL MDB0L08H.BDL MDJ0L09V.BDL
MBT1S09V.BDL MBT1S10H.BDL MBT1E01V.BDL MBT1E02H.BDL
MBT2S10H.BDL MBT2E02H.BDL MBT2E03V.BDL MBT2A03V.BDL
MBC3S10H.BDL MBM3E02H.BDL MBC3A01V.BDL MBC3A04V.BDL
MBC4S10H.BDL MBM4E02H.BDL MBC4A01V.BDL MBC4A04V.BDL
MBC5S10H.BDL MBM5E02H.BDL MBC5A01V.BDL MBC5A04V.BDL
MBC6S10H.BDL MBM6E02H.BDL MBC6A01V.BDL MBC6A04V.BDL
MBC7S10H.BDL MBM7E02H.BDL MBC7A01V.BDL MBC7A04V.BDL
MBD5C00H.BDL MBD5C00V.BDL MBD

Log Number: 4530989Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

Inj and NL dropped from Beam Permit to Power Permit due to 1L12 losing Waveguide pressure permissive. RF on-call paged and are actively investigating remotely.

Log Number: 4530988Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17508Title:
1L12 lost PSS permissive

Summary:
experts on call contactedDuration:
9 minutes

Time Down:
24-Jul-2026 18:44

Time Up:

Log Number: 4530987Logbook(s): 

• ELOG

Entry Makers: yoonBody: 

lost PSS permissive so took the INJ & NL down with it

Log Number: 4530982Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl05
Data from: /usr/opdata/burt/allsnap/07-20-26_10:01:45
Restored file: /tmp/07-24-26_18:35:05.snap

Log Number: 4530981Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl05

Saved: lrichard 07-24-26 18:34:51 {A:i B:1 C:4 E:1060 A=BS B=BS C=BS D=BS 0R08=0.00 No dumps in. Autosave prior to restore.