Aggregator

Log Number: 4485098Logbook(s): 

• ELOG

Body: 

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.1070 Peak 2 - u Sigma: 0.3432 Peak 3 - y Sigma: 0.4596

Log Number: 4485097Logbook(s): 

• ELOG

Entry Makers: satogataBody: 

Looking over outliers on quad resistances and behaviors through machine. MQK4R03 stands out as having an odd negative resistance value. Not sure if actual magnet current is reversed.

Log Number: 4485096Logbook(s): 

• ELOG

Tags: 

• MCC8am

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: xC Preparing for Production Beam, xB waiting on Expert

Log Number: 4485094Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Thomas
DATE:             04/08/2026
SHIFT:               Day

The operator has read the following:

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

Log Number: 4485095Logbook(s): 

• ELOG

Entry Makers: deirBody: 

Fig 2 is a histogram of the changes in NL GP required to stay on crest. Most of these changes are within +/- 0.1 degrees as we had a lock running, but often operators took over because it slipped out from under us too quickly for the lock to keep up.

Log Number: 4485092Logbook(s): 

• ELOG

Body: 

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.3002 Peak 2 - u Sigma: 0.2793 Peak 3 - y Sigma: 0.3996

Log Number: 4485093Logbook(s): 

• DCLOG
• ELOG

Entry Makers: schoene

Log Number: 4485087Logbook(s): 

• ELOG
• BTLOG

Body: 

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.0789 Peak 2 - u Sigma: 0.3978 Peak 3 - y Sigma: 0.6045

Log Number: 4485086Logbook(s): 

• ELOG
• BTLOG

Body: 

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.3537 Peak 2 - u Sigma: 0.3598 Peak 3 - y Sigma: 0.2156

Log Number: 4485085Logbook(s): 

• ELOG
• BTLOG

Body: 

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.1627 Peak 2 - u Sigma: 0.2349 Peak 3 - y Sigma: 0.2218

Log Number: 4485084Logbook(s): 

• ELOG
• BTLOG

Body: 

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.0935 Peak 2 - u Sigma: 0.0998 Peak 3 - y Sigma: 0.2117

Log Number: 4485083Logbook(s): 

• ELOG
• BTLOG

Body: 

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.0758 Peak 2 - u Sigma: 0.2021 Peak 3 - y Sigma: 0.2208

Log Number: 4485082Logbook(s): 

• ELOG
• BTLOG

Body: 

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.3537 Peak 2 - u Sigma: 0.3598 Peak 3 - y Sigma: 0.2156

Log Number: 4485080Logbook(s): 

• BTLOG
• ELOG

Entry Makers: samariBody: 

Given the 4R Beam motion looked into the 4R quads and found one that has been seriously moving in voltage. Also got much more noisy in current as well.

Log Number: 4485074Logbook(s): 

• BTLOG
• ELOG

Entry Makers: samariBody: 

I tried to see the covariance given the beam shaking, and it seems that even after the 4R something is creating lots of coupled and shaky motion given the second strongest singular value.

Log Number: 4485073Logbook(s): 

• ELOG

Body: 

the issues originally encountered are no longer present. As such, consider complete. No work has been performed past the initial swap.

Log Number: 4485070Logbook(s): 

• ELOG
• LERFLOG

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

Date : 04-08-26
Time : 07:35:24
Day : Wednesday
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: 4485069Logbook(s): 

• ELOG
• HBLOG

Body: 

Comments:

harp trace altered by horizontal beam motion, source unknown.

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.0188 Peak 2 - u Sigma: 0.0198 Peak 3 - y Sigma: 0.0165

Log Number: 4485068Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: samari 04-08-26 07:33:18 {A:i B:5 C:2 E:345 A=BS B=Tune C=BS D=BS 0R08=4.74 dump(s) in.

Log Number: 4485066Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: 2R/3S quads back on design and revisiting 2R ballpark match.