Aggregator

Log Number: 4487543Logbook(s): 

• ELOG

Body: 

Spare amp in SLSB, epas PTW 10103 on issue, preparing to swap.

Log Number: 4487541Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: jhoward 04-14-26 23:29:13 {A:i B:3 C:2 E:345 A=BS B=BS C=BS D=BS 0R08=0.00 1R dump in.

Log Number: 4487540Logbook(s): 

• ELOG
• LERFLOG

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

Date : 04-14-26
Time : 23:27:26
Day : Tuesday
Shift : Owl

Crew Chief : Howard
Program Deputy: Ogur
Team : D
Arm : Price
Designated SSO: Christian
LERF Operator:
Operators : Price, Chaudhary, Christian

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

Log Number: 4487539Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Beam

Log Number: 4487538Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

Body:  Accelerator PHYSICS STUDIES RESTORE ACC DOWN OFF (SAM) Planned 4 0 0

Log Number: 4487535Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

Log Number: 4487533Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

Log Number: 4487532Logbook(s): 

• ELOG

Body: 

Spare LO distr. Amp we had in since March gave out. Determining which spare to put in at the moment.

Log Number: 4487531Logbook(s): 

• ELOG

Entry Makers: dthomasBody: 

EESRF has found a SL driveline amp that they will swap. There is no guarantee that it will hold; may not be in the best condition.

Log Number: 4487530Logbook(s): 

• ELOG

Body: Results where Job # is 997 {200} CAVITY PHASE ERROR (DEGREES) OUTCOME PHASE (DEGREES) START DATE DURATION (SECONDS) CORRECTION DATE CORRECTION ERROR REASON 1L21-8 -2.24 MEASURED -75.45 14-Apr-2026 21:54 57<

Log Number: 4487529Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

Currently, there is no known ready spare. RF is searching around for one.

Log Number: 4487528Logbook(s): 

• ELOG

Body: 

Hall B control room reported that the PSS display was showing that they were in controlled access while they were very much in beam permit.

Log Number: 4487526Logbook(s): 

• ELOG

Entry Makers: yoonBody: 

Log Number: 4487523Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System Masking for: BeamLossMonitor
User: yoon
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
ILM8T09<B

Log Number: 4487522Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System Masking for: CryoModule
User: yoon
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: 4487520Logbook(s): 

• HBLOG
• ELOG

Entry Makers: dthomasBody: 

Log Number: 4487518Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16724Title:
SL zones dropped out of RF

Summary:
Entire south linac dropped out of RF, cavities unable to make gradient, RF-on-call contactedDuration:
9 minutes

Time Down:
14-Apr-20

Log Number: 4487517Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

Log Number: 4487514Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

Log Number: 4487513Logbook(s): 

• HBLOG
• ELOG

Entry Makers: dthomas