Aggregator

Log Number: 4511554Logbook(s): 

• ELOG

Entry Makers: deirBody: 

Noticed only three of the cavities were masked in the FSD anomalies but FSD was clear...

It's not stopping us from sending beam, but it is weird.

Log Number: 4511553Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19.5 was successfully run for the South Linac on 2026-06-15 00:14:07. The application phase took 00:02:22 to complete.

Log Number: 4511552Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl05

Saved: deir 06-15-26 00:12:25 {A:i B:1 C:3 E:1060 A=BS B=BS C=BS D=BS 0R08=0.00 2R dump in. A B C dump(s) in.

Log Number: 4511551Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System UN-Masking for: CryoModule
User: samari
Areas: SouthLinac

CryoModule Devices:
2L14
2L03
2L02
2L04
2L05
2L07
2L06
2L08
2L11
2L09
2L10
2L12
2L15
2L13
2L16
2L19
2L17
2L18
2L20
2L21
2L22
2L23
2L24
2L25
2L26

Log Number: 4511550Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Samari
DATE:             06/15/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4511549Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Shriner
DATE:             06/15/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4511547Logbook(s): 

• ELOG
• RFLOG

Entry Makers: alexsBody: 

Recovered without issue

Log Number: 4511546Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been GSET 0:
2L17-5
Username: deir
Date/Time: 06-15-26_00:02:22
RF Status: Bad
Tuner Status: Good
Comment: GSET 0 - stepped off +100k - Unstable CRFP w/ Loops Open
Special Instructions: .

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4511544Logbook(s): 

• ELOG

Body: HALLC=>BEAMDUMP=>IOPD102 has been disabled in alarm handler

Multiple log entries for this alarm dating back to 3/26/2026. This sensor has been reading >1% O2 since the end of the 2025 run.

The Ops-PR: https://logbooks.jlab.org/entry/4480409

Facilities Confirmation for running with alarms: https://logbooks.jlab.org/entry/4480679

Confirmation that the tank O2 sensor is broken:
https://logbooks.jlab.org/entry/4480922

Log Number: 4511543Logbook(s): 

• ELOG

Body: HALLC=>BEAMDUMP=>IOPD102 has been enabled in alarm handler

ena

Log Number: 4511541Logbook(s): 

• ELOG

Body: HALLC has been enabled in alarm handler

ena

Log Number: 4511540Logbook(s): 

• ELOG
• LERFLOG

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

Date : 06-14-26
Time : 23:28:37
Day : Sunday
Shift : Owl

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

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

Log Number: 4511538Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Phasing and waiting for SL CHL recovery from 4K trip.

Log Number: 4511537Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4511530Logbook(s): 

• ELOG

Entry Makers: lrichard

Log Number: 4511529Logbook(s): 

• CLOG
• ELOG

Entry Makers: johnwjwilsonBody: 

SLinac/FEL SC1R Pumpdown Complete.

Log Number: 4511526Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

Took setpoint and cycled fine.

Log Number: 4511525Logbook(s): 

• ELOG
• RFLOG

Entry Makers: alexsBody: 

Log Number: 4511524Logbook(s): 

• ELOG

Body: Results where Job # is 1018 {200} CAVITY PHASE ERROR (DEGREES) OUTCOME PHASE (DEGREES) START DATE DURATION (SECONDS) CORRECTION DATE CORRECTION ERROR REASON 1L22-8 BYPASSED 14-Jun-2026 18:37 0 14

Log Number: 4511522Logbook(s): 

• ELOG

Body: Results where Job # is 1018 {200} CAVITY PHASE ERROR (DEGREES) OUTCOME PHASE (DEGREES) START DATE DURATION (SECONDS) CORRECTION DATE CORRECTION ERROR REASON 1L22-8 BYPASSED 14-Jun-2026 18:37 0 </