Aggregator

Log Number: 4539869Logbook(s): 

• ELOG
• LERFLOG

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

Date : 08-08-26
Time : 07:29:55
Day : Saturday
Shift : Day

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

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

Log Number: 4539864Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Beam to xBCD

Log Number: 4539863Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4539837Logbook(s): 

• ELOG

Entry Makers: deirBody: 

Log Number: 4539836Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-08-08 03:28:50 The output from the myRestore execution was as follows: iocsoftgunspce systemEnum@2026-08-08 03:28 2(2) restored Execute: /usr/csite/certified/bin/ced2Epics -ced ced -A -i iocsoftgunspce (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: 4539826Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-08-08 02:37:56 The output from the myRestore execution was as follows: iocsoftw4spce systemEnum@2026-08-08 02:37 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: 4539819Logbook(s): 

• ELOG

Entry Makers: samariBody: 

Running fastfeedback energy we lost about 1.2 MeV from 2L19. Since we'll only be using 2L19 I figured putting it back would be beneficial.

Log Number: 4539817Logbook(s): 

• ELOG

Entry Makers: samariBody: 

Log Number: 4539815Logbook(s): 

• DCLOG
• ELOG

Entry Makers: msmith

Log Number: 4539814Logbook(s): 

• DCLOG
• ELOG

Entry Makers: msmithBody: 

Arcs ramped down around 23:23. Photos taken by swing shift between 23:50-00:05.

Log Number: 4539808Logbook(s): 

• ELOG

Entry Makers: samariBody: 

Log Number: 4539807Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17640Title:
Arc9 down due to 9A28 Overtemp

Summary:
Limited to first pass beam for the night.

Log Number: 4539805Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System UN-Masking for: BeamLossMonitor
User: msmith
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
ILM8

Log Number: 4539804Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19.5 was successfully run for the South Linac on 2026-08-08 00:44:49. The application phase took 00:00:18 to complete.

Log Number: 4539803Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17635Title:
Arc 9 Tripped on Overtemp

Summary:
This is the second time in the span of ~2 hours.

Log Number: 4539802Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

FudgeIt 5.0 changed the South Linac fudge factor from 0.998 to 0.999.

Log Number: 4539801Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19.5 was successfully run for the South Linac on 2026-08-08 00:43:27. The application phase took 00:02:34 to complete.

Log Number: 4539800Logbook(s): 

• ELOG

Entry Makers: deirBody: 

Recovering from the SL access to get thermal images of the arc 9 and arc 5 dipoles.

We are leaving Arc9 off for the night, so no beam to Hall C or Hall D. We will resume 3 nA to Hall B once the machine is restored.

Log Number: 4539798Logbook(s): 

• ELOG

Body: 

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

Area.Arcs.Arc1.Spreader
Area.Arcs.Arc1.Arc
Area.Arcs.Arc1.Recombiner
Area.Arcs.Arc1.Extraction
Area.Arcs.Arc2.Spreader
Area.Arcs.Arc2.Arc
Area.Arcs.Arc2.Recombiner
Area.Arcs.Arc2.Extraction
Area.Arcs.Arc3.Spreader
Area.Arcs.Arc3.Arc
Area.Arcs.Arc3.Recombiner
Area.Arcs.Arc3.Extraction
Area.Arcs.Arc4.Spreader
Area.Arcs.Arc4.Arc
Area.Arcs.Arc4.Recombiner
Area.Arcs.Arc4.Extraction
Area.Arcs.Arc5.Spreader
Area.Arcs.Arc5.Arc

Log Number: 4539797Logbook(s): 

• DCLOG
• ELOG

Entry Makers: deirBody: 

Shunt mismatched by ~0.4 amps for about 30 seconds before returning to setpoint without any operator intervention.

We're not sending beam beyond first pass tonight, so if this happens again it shouldn't be an issue.