Aggregator

Log Number: 4514304Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Schaumloffel
DATE:             06/20/2026
SHIFT:               Swing

The operator has read the following:

Log Number: 4514303Logbook(s): 

• DCLOG
• ELOG

Entry Makers: yoonBody: 

mismatching in the alarm handler, though the mismatches cleared on their own we decided to swap out the trim card

Log Number: 4514292Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Yoon
DATE:             06/20/2026
SHIFT:               Swing

The operator has read the following:

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

Log Number: 4514276Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl05

Saved: eforman 06-20-26 15:23:51 {A:i B:1 C:3 E:1060 A=BS B=CW C=CW D=BS 0R08=29.22 No dumps in.

Log Number: 4514275Logbook(s): 

• ELOG
• LERFLOG

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

Date : 06-20-26
Time : 15:11:24
Day : Saturday
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: 4514273Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System UN-Masking for: BeamLossMonitor
User: janak
Areas: All

BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8T

Log Number: 4514266Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Beam to HB/HC

Log Number: 4514265Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4514249Logbook(s): 

• HBLOG
• ELOG

Entry Makers: alexsBody: 

Log Number: 4514229Logbook(s): 

• HBLOG
• ELOG

Entry Makers: alexsBody: 

Log Number: 4514226Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
2L20-8
Username: alexs
Date/Time: 06-20-26_12:46:06
RF Status: Good
Tuner Status: Good
Comment: GASK railed with attenuator at 0 dB. RF drive is dying
Special Instructions:

Maintenance Tag: Component: Other

Log Number: 4514225Logbook(s): 

• ELOG
• RFLOG

Entry Makers: alexsBody: 

Cavity started SOSing with GASK railed at 10 V. Attenuator is already at 0 dB, so RF drive seems to be failing. Looks like there's still enough power to regulate at 4.5 MV/m for now, so reduced the drive high to get back to beaming. RFCM output and 2.5 W amp will need checking on a maintenance day.

Note: The sudden flat GMES readback after derating is due to RF fast feedback being paused.

Log Number: 4514224Logbook(s): 

• ELOG

Entry Makers: alexsBody: 

Forgot the pic of the after, but it's better.

Log Number: 4514221Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Log Number: 4514220Logbook(s): 

• DCLOG
• ELOG

Entry Makers: alexsBody: 

Log Number: 4514219Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17230Title:
Path length, SL LEM

Summary:
Derated 2L20-8 and had to LEM the South Linac.

Log Number: 4514217Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17230Title:
Path length, SL LEM

Summary:
Derated 2L20-8 and had to LEM the South Linac.

Log Number: 4514216Logbook(s): 

• ELOG

Body: 

HYST AREA Version 7-0 has successfully cycled the following:

Area.Linacs.South

Total Time: 3.150 mins

Log Number: 4514215Logbook(s): 

• ELOG
• BTLOG

Tags: 

• Autolog

Body: dogCalc V0-14 download

hostname: opsl03
CED workspace: OPS
CED login_key: pro

Log Number: 4514214Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

FudgeIt 5.0 changed the South Linac fudge factor from 0.999 to 1.