Aggregator

Log Number: 4531570Logbook(s): 

• HCLOG
• ELOG

Entry Makers: schoeneBody: 

Log Number: 4531568Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: Loop 2 10cmPass: 4Note: Calibrated On:2026-Jul-16 03:55Calibrated By: msmithFile:C-2026-07-16_0355_Loop_2_10cm_Pass-4.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton1,937</

Log Number: 4531567Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4531563Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Thomas
DATE:             07/26/2026
SHIFT:               Day

The operator has read the following:

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

Log Number: 4531533Logbook(s): 

• HCLOG
• ELOG

Entry Makers: msmithBody: 

Log Number: 4531532Logbook(s): 

• ELOG
• LERFLOG

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

Date : 07-26-26
Time : 07:22:47
Day : Sunday
Shift : Day

Crew Chief : Schoene
Program Deputy: KLarrieu
Team : B
Arm : Thomas
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: 4531531Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: 10cm DummyPass: 4Note: SHMS -10.11degreesCalibrated On:2026-Jul-16 22:46Calibrated By: shrinerFile:C-2026-07-16_2246_10cm_Dummy_Pass-4.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compto

Log Number: 4531527Logbook(s): 

• HCLOG
• ELOG

Entry Makers: msmithBody: 

Log Number: 4531526Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4531524Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: 10cm DummyPass: 4Note: SHMS -10.11degreesCalibrated On:2026-Jul-16 22:46Calibrated By: shrinerFile:C-2026-07-16_2246_10cm_Dummy_Pass-4.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compto

Log Number: 4531522Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4531520Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: xC BNR for Config Change; CW to xBD

Log Number: 4531518Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4531516Logbook(s): 

• ELOG

Entry Makers: samariBody: 

Honestly all of this may have been placebo and we just needed to wait out whatever was shaking, but I mostly touched the 3rd, 4th, and 5th pass vertical west recombiner. Some of it seemed to help just based on being able to send beam.

Log Number: 4531506Logbook(s): 

• HCLOG
• ELOG

Entry Makers: msmithBody: 

Log Number: 4531503Logbook(s): 

• HCLOG
• ELOG

Entry Makers: msmithBody: 

Log Number: 4531502Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: Loop 2 10cmPass: 4Note: Calibrated On:2026-Jul-16 03:55Calibrated By: msmithFile:C-2026-07-16_0355_Loop_2_10cm_Pass-4.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton1,953</

Log Number: 4531492Logbook(s): 

• ELOG

Entry Makers: deirBody: 

Almost looks like BBU...

Figures 3-5. The SLM pictures are only with D beam in the machine. We don't really see this with xC in the mix.

Figures 1 and 2 are from the 3C12 waveforms. We turned off FFB to see if it was correcting for whatever was going on, and lo and behold, this popped out. That trip data captured pretty large vertical oscillations in the 3C12 line.

The 7S01 trips have been a pain tonight.

Log Number: 4531490Logbook(s): 

• DCLOG
• ELOG

Entry Makers: deir

Log Number: 4531484Logbook(s): 

• ELOG

Entry Makers: deirBody: 

Possibly the cause of our 7S01 trips.