Aggregator

Log Number: 4515191Logbook(s): 

• ELOG

Body: 

Log Number: 4515190Logbook(s): 

• ELOG

Body: 

PTW on-issue. Added to MD activities for Wed 6/24.

Log Number: 4515187Logbook(s): 

• ELOG

Body: 

Once the PTW is on-issue this work is approved to occur. Slated for Wed 6/24 MD.

Log Number: 4515186Logbook(s): 

• ELOG
• LERFLOG

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

Date : 06-22-26
Time : 15:29:58
Day : Monday
Shift : Swing

Crew Chief : Forman
Program Deputy: Nissen
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: 4515182Logbook(s): 

• CLOG
• ELOG

Entry Makers: johnwBody: 

This morning, SLinac heater margin floated in and out of alarm. As a cryo response, we received permission to change some clip heat values in 2L22, 2L25, and 2L26.

2L22-1 was raised from 11W to 19W, 2L22-6 was raised from 17W to 25W. Heater Readback is 0.5-0.6W

2L25-5 was lowered from 15W to 1W. Heater Readback is 1.06W

2L26-1 was lowered from 10W to 1W, 2L26-3 was lowered from 15W to 1W, 2L26-7 was lowered from 15W to 1W. Heater Readback is 3.12W

In total, electric heat use in the C100s was reduced by about 70W. This equates to ~2.8W/module of heater margin increase.

Log Number: 4515181Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-06-22 15:40:17 The output from the myRestore execution was as follows: iocsoftw3spce systemEnum@2026-06-22 15:40 2(2) restored Execute: /usr/csite/certified/bin/ced2Epics -ced ced -A -i iocsoftw3spce (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: 4515175Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
2L25-2
Username: janak
Date/Time: 06-22-26_15:39:00
RF Status: Good
Tuner Status: Good
Comment: DRVH=15.400 Repeated Cold window faults
Previous OPS DRVH: 15.6
Special Instructions: was found.

Log Number: 4515172Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Down for W202B13 issues. DC Power is investigating.

Log Number: 4515171Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4515156Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Made some steering adjustments in 5R region, didn't get before pictures but there was a downward angle going into the HC dumplette.

Log Number: 4515155Logbook(s): 

• ELOG

Body: 

Discussed with Tom/Larry; ready for removal of 1L09 decarad.
Will install decarads at 1L24 & 1L25 to attempt pulse processing there.

Log Number: 4515154Logbook(s): 

• ELOG

Body: 

work ongoing for phase 1 of LERF sensor changeout. Lab 2, 4, and the vault are all back to ODH 0 conditions.

Log Number: 4515151Logbook(s): 

• ELOG
• LERFLOG

Body: The following entry was removed from the Accelerator Bypassed-Interlocks Log (ABIL) Tag # 9795 Device: OM201 Function: Oxygen Monitor Location: LERF Tunnel - Injector Pit, Low Purpose: False Alarm.

Log Number: 4515150Logbook(s): 

• ELOG
• LERFLOG

Body: The following entry was removed from the Accelerator Bypassed-Interlocks Log (ABIL) Tag # 9795 Device: OM201 Function: Oxygen Monitor Location: LERF Tunnel - Injector Pit, Low Purpose: False Alarm.

Log Number: 4515149Logbook(s): 

• ELOG
• LERFLOG

Body: The following entry was removed from the Accelerator Bypassed-Interlocks Log (ABIL) Tag # 9795 Device: OM201 Function: Oxygen Monitor Location: LERF Tunnel - Injector Pit, Low Purpose: False Alarm.

Log Number: 4515148Logbook(s): 

• ELOG
• LERFLOG

Body: The following entry was removed from the Accelerator Bypassed-Interlocks Log (ABIL) Tag # 9795 Device: OM201 Function: Oxygen Monitor Location: LERF Tunnel - Injector Pit, Low Purpose: False Alarm.

Log Number: 4515147Logbook(s): 

• ELOG

Entry Makers: chumphryBody: 

Log Number: 4515146Logbook(s): 

• ELOG

Entry Makers: chumphryBody: 

Log Number: 4515142Logbook(s): 

• ELOG
• SLOG

Body: 

While performing post troubleshooting on iocwa2mag running a vxWorks command "memShow(1)" to observe the memory status of the IOC (iocwa2mag) locked
up and needed a manual reboot. The IOC is back up now and restored.

Log Number: 4515141Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17243Title:
iocwa2mag tripped

Summary:
ioc trip Duration:
29 minutes

Time Down:
22-Jun-2026 13:35

Time Up:
22-Jun-2026 14:04