Aggregator

Log Number: 4480513Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

Log Number: 4480512Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

Log Number: 4480511Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: chumphry 03-27-26 08:30:05 {A:i B:5 C:2 E:345 A=BS B=BS C=Tune D=BS 0R08=5.61 2R dump in. dump(s) in.

Log Number: 4480510Logbook(s): 

• ELOG

Tags: 

• MCC8am

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Prepping to send beam to 1R

Log Number: 4480509Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Humphry
DATE:             03/27/2026
SHIFT:               Day

The operator has read the following:

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

Log Number: 4480505Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Barker
DATE:             03/27/2026
SHIFT:               Day

The operator has read the following:

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

Log Number: 4480503Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Thomas
DATE:             03/27/2026
SHIFT:               Day

The operator has read the following:

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

Log Number: 4480499Logbook(s): 

• ELOG
• LERFLOG

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

Date : 03-27-26
Time : 07:37:24
Day : Friday
Shift : Day

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

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

Log Number: 4480498Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Log Number: 4480497Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4480496Logbook(s): 

• ELOG

Body: Results where Job # is 987 {88} CAVITY PHASE ERROR (DEGREES) OUTCOME PHASE (DEGREES) START DATE DURATION (SECONDS) CORRECTION DATE CORRECTION ERROR REASON 1L21-8 -1.94 MEASURED -75.52 27-Mar-2026 07:00 56</

Log Number: 4480494Logbook(s): 

• ELOG

Body: 

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

Area.Linacs.North

Total Time: 1.233 mins

Log Number: 4480493Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the North Linac on 2026-03-27 07:07:49. The application phase took 00:00:09 to complete.

Log Number: 4480491Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

FudgeIt 5.0 changed the North Linac fudge factor from 0.988 to 0.985.

Log Number: 4480490Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the North Linac on 2026-03-27 07:07:02. The application phase took 00:00:11 to complete.

Log Number: 4480489Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the North Linac on 2026-03-27 07:06:26. The application phase took 00:00:24 to complete.

Log Number: 4480488Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

FudgeIt 5.0 changed the North Linac fudge factor from 0.989 to 0.988.

Log Number: 4480487Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the North Linac on 2026-03-27 07:04:20. The application phase took 00:01:01 to complete.

Log Number: 4480486Logbook(s): 

• ELOG

Entry Makers: samariBody: 

Cavity 2 in particular was extremely off (18 degrees), and steering at 0L04H was necessary to phase these as orbit would change quite a bit. in total gained about .25 MeV from 0L03 given 0L04-8's correction. It seemed to tighten up our 1A spot by a solid amount.

Cavity 1: -10 degrees
Cavity 2: -18 degrees
Cavity 3: +10 degrees
cavity 4: +6 degrees
cavity 5: +7 degrees
cavity 6: +5 degrees
cavity 7: -5 degrees
cavity 8: -7 degrees

Log Number: 4480484Logbook(s): 

• ELOG

Entry Makers: samariBody: 

While running phaser had to pause and hand phase this cavity due to the huge change and it ended up being 40 degrees off. I think this is why the 1L07 gang phase was set ~4 degrees to compensate for the single cavity as the rest of the cavities were all about 6 degrees off as well. Phaser was run on it on the 12th, so phase must haver slipped in this cavity. Additionally, LEM had set this cavity way too low (3.67 MV/m), so it might be a good idea to fix the digital zones to have a mimimum GSET of 8?