Aggregator

Log Number: 4496887Logbook(s): 

• HBLOG
• ELOG

Body: 

Comments

Log Number: 4496886Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Yoon
DATE:             05/09/2026
SHIFT:               Swing

The operator has read the following:

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

Log Number: 4496889Logbook(s): 

• DCLOG
• ELOG

Entry Makers: yoonBody: 

took setpoint, will cycle at next beam trip

no TC swap needed

Log Number: 4496884Logbook(s): 

• ELOG

Entry Makers: bjacobBody: 

We received some complaints about beam stability. That and the energy drift seen earlier prompted us to re-engage the hall C witness beam.

Log Number: 4496882Logbook(s): 

• HBLOG
• ELOG

Body: 

Comments

Log Number: 4496880Logbook(s): 

• HBLOG
• ELOG

Body: 

Comments

Log Number: 4496878Logbook(s): 

• HBLOG
• ELOG

Body: 

Comments

Log Number: 4496876Logbook(s): 

• HBLOG
• ELOG

Entry Makers: bjacobBody: 

Hall B's beam is too large on the 2H00A Harp (see linked ELog). I made a small adjustment to MQK2C22, MQR2C23, and MQK2C24 (see fig 1), to try and squish it down.

Upon sending back, the halo rates look worse so it is possible that this was the wrong direction. Hall B is scanning their harps now.

Profile looks tighter but they are still seeing a vertical tail.

I made a larger adjustment to MQR2C23. The guidance indicates the middle quad is the one to use when only one plane needs to be adjusted. Halo rates seem unaffected.

Hall B is doing a harp swipe now.

Log Number: 4496874Logbook(s): 

• HBLOG
• ELOG

Body: 

Comments

Log Number: 4496873Logbook(s): 

• HBLOG
• ELOG

Body: 

changed fit limits to see tail better
the tail on Y profile is towards lower Y

Log Number: 4496872Logbook(s): 

• ELOG
• LERFLOG

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

Date : 05-09-26
Time : 15:33:46
Day : Saturday
Shift : Swing

Crew Chief : Forman
Program Deputy: Drury
Team : F
Arm : Yoon
Designated SSO: Schaumloffel
LERF Operator:
Operators : Schaumloffel, Yoon

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

Log Number: 4496871Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-05-09 15:33:10 The output from the myRestore execution was as follows: iocsoftw4spce systemEnum@2026-05-09 15:33 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: 4496870Logbook(s): 

• HBLOG
• ELOG

Body: 

Comments

Log Number: 4496868Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Beam to HB/HC

Log Number: 4496867Logbook(s): 

• HDLOG
• ELOG

Entry Makers: zisisBody: 

Yesterday I was not able to save the BTM after 15:00 as required by the Crew Chief. However, I was able to submit it a few min after 16:00.
Today I had the same problem at 15:00. See attached screenshot.
Both yesterday and today I spoke with the Crew Chief and he made a note of this.

Log Number: 4496866Logbook(s): 

• ELOG

Body: ACC=>BOXES=>RSEP8A=>MRSEP8AFLOW has been enabled in alarm handler

Re-enable after clearing alarm

Log Number: 4496865Logbook(s): 

• ELOG

Body: ACC=>BOXES=>RSEP8A=>MRSEP8AFLOW has been disabled in alarm handler

Won't allow acknowledge

Log Number: 4496861Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4496860Logbook(s): 

• ELOG

Body: 

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.0532 Peak 2 - u Sigma: 0.0532 Peak 3 - y Sigma: 0.0394

Log Number: 4496857Logbook(s): 

• HBLOG
• ELOG

Body: 

orbit locks off