Aggregator

Log Number: 4531111Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: RF was turned on in:
R12
R13
R14
R15
R17
R18
R19
R1A
R1B
R1D
R1E
R1F
R1G
R1H
R1I
R1J
R1K
R1L
R1M
R1N
R1O
R1P
R1Q
R02
R03
R04

Log Number: 4531110Logbook(s): 

• ELOG

Body: ACC=>RFSEP=>PASS5 has been enabled in alarm handler

Preparing for xC + xD 5th pass

Log Number: 4531109Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4531107Logbook(s): 

• ELOG

Entry Makers: schoeneBody: 

Second spare bellows appears to hold pressure. RF has requested that we wait ~0.5h to turn the RF back on, to avoid the need for another survey if another leak arises in that time.

Log Number: 4531103Logbook(s): 

• ELOG
• RFLOG

Entry Makers: alexsBody: 

Leak has been found downstairs in the 1L12-5 waveguide. It initially appeared to be an aging gasket failing, but is now almost certain to be a cracked bellows. A spare has been secured and the swap will begin shortly.

Log Number: 4531101Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-07-25 10:36:39 The output from the myRestore execution was as follows: iocsoftw4spce systemEnum@2026-07-25 10:36 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: 4531100Logbook(s): 

• ELOG

Body: 

Did not clarify in earlier ATLis comments: SSG has been in periodic communication with ADSO since 8:20am this morning on this issue.

Log Number: 4531099Logbook(s): 

• ELOG

Body: 

It's just a formal confirmation that the proposed plan was developed in consultation with SSG group leader.
SSG is on the stand by in case it has to be enacted.

Log Number: 4531098Logbook(s): 

• ELOG

Body: 

Observing intermittent issues accessing applications on https://ace.jlab.org (PD Shiftplans, Presenter, SRM) from offsite this morning that seem like the may be Cloudflare-related. Symptoms include "unauthorized" error immediately after login via keycloak or else "419 page expired" errors later when working with forms.

Log Number: 4531097Logbook(s): 

• ELOG

Entry Makers: schoeneBody: 

RF on-call is currently on site, working with an operator to check for a waveguide leak in the tunnel. RF is also working on the paperwork required to cap off the waveguide, and coordinating with SSG. See ATLis 120804.

Log Number: 4531096Logbook(s): 

• ELOG

Body: 

Good to go.

Log Number: 4531095Logbook(s): 

• ELOG

Body: 

ADSO has consulted with AESRF and the Accelerator Safety Program Manager (ASPM) on this approach and this is a reasonable path without impacting the PSS interlocks that would impact the safety of personnel. If we need to bypass PSS interlocks, the path forward will need additional scrutiny to avoid conflicts with the CEBAF ASE.

Log Number: 4531094Logbook(s): 

• ELOG

Body: 

This ATLis is an addendum to the ePAS PTW 11396. Isolation occurs under IC 16964. RadCon has already surveyed the north linac and is aware of what's going on. SSG has been notified.

Log Number: 4531092Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Thomas
DATE:             07/25/2026
SHIFT:               Day

The operator has read the following:

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

Log Number: 4531090Logbook(s): 

• ELOG

Body: 

Start of shift: No beam

Log Number: 4531089Logbook(s): 

• ELOG
• RADLOG

Entry Makers: bbarkerBody: 

Log Number: 4531088Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Shenenberger
DATE:             07/25/2026
SHIFT:               Day

The operator has read the following:

Log Number: 4531087Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Barker
DATE:             07/25/2026
SHIFT:               Day

The operator has read the following:

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

Log Number: 4531078Logbook(s): 

• ELOG
• LERFLOG

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

Date : 07-25-26
Time : 07:23:31
Day : Saturday
Shift : Day

Crew Chief : Schoene
Program Deputy: KLarrieu
Team : B
Arm : Thomas
Designated SSO: Shenenberger
LERF Operator:
Operators : Barker, Thomas, Shenenberger

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

Log Number: 4531077Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Down for 1L12 WG Pressure