Aggregator

Log Number: 4534447Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Shriner
DATE:             07/30/2026
SHIFT:               Swing

The operator has read the following:

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

Log Number: 4534444Logbook(s): 

• ELOG

Body: 

2.5w amp power supply ripple would affect all eight, not just 1,2, and 3. Cavity three is not going unregulated but instead, beam loading and the GLDER naturally goes up with drive and warns below 200 ppm. At the 75ua beam, I don't see GASK railing or CRFP going above 3k and more importantly, no major changes in GMES or phase. The little yellow hollow squares on the cavity mean the the fluctuations are greater the 100 ppm of the measured gradient as averaged over 25 seconds.

Log Number: 4534435Logbook(s): 

• ELOG
• LERFLOG

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

Date : 07-30-26
Time : 16:00:44
Day : Thursday
Shift : Swing

Crew Chief : Richardson
Program Deputy: Latosky
Team : C
Arm : Shriner
Designated SSO: Anthony
LERF Operator:
Operators : Anthony, Shriner

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

Log Number: 4534433Logbook(s): 

• DCLOG
• ELOG

Entry Makers: bbarkerBody: 

Took set point and cycled fine

Log Number: 4534430Logbook(s): 

• ELOG
• SRFLOG

Body: 

VIP7S03A
- I&C to check ion pak next maintenance day
- If pump is still bad, replace during next SAM

Log Number: 4534431Logbook(s): 

• ELOG

Entry Makers: mmerzBody: 

Log Number: 4534427Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17546Title:
Slight Machine Tuning - GP, PL

Summary:
Seeing a bit of beam instability, taking a moment to correct pathlength and gang phase around the machineDuration:
10 minutes

Time Down:

Log Number: 4534426Logbook(s): 

• ELOG

Body: 

During the PSS system check, a faded and worn sticker was observed on the North Access Building Door 4. In addition, several ODH signs were found to be faded due to prolonged sun exposure. These signs will be replaced at the earliest convenience.

Log Number: 4534424Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System UN-Masking for: BeamLossMonitor
User: mmerz
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
ILM8T

Log Number: 4534422Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17546Title:
Slight Machine Tuning - GP, PL

Summary:
Seeing a bit of beam instability, taking a moment to correct pathlength and gang phase around the machineDuration:
8 minutes

Time Down:

Log Number: 4534421Logbook(s): 

• ELOG
• BTLOG

Tags: 

• Autolog

Body: dogCalc V0-14 download

hostname: opsl02
CED workspace: OPS
CED login_key: pro

Log Number: 4534419Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System Masking for: BeamLossMonitor
User: mmerz
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<

Log Number: 4534406Logbook(s): 

• ELOG

Entry Makers: bbarkerBody: 

Log Number: 4534404Logbook(s): 

• ELOG

Body: Calibration ParametersHall:DTarget: JD80-213 80um 0/90 degPass: 5.5Note: Calibrated On:2026-Jul-30 09:33Calibrated By: dthomasFile:D-2026-07-30_0933_JD80-213_80um_0_90_deg_Pass-5.5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)

Log Number: 4534403Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: QE Measurement.

Log Number: 4534401Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4534382Logbook(s): 

• BTLOG
• ELOG

Body: 

Jerone pointed out the steps are likely switching between passes (arcs). So that is a known effect and not related to beam motion.

Log Number: 4534365Logbook(s): 

• ELOG

Body: 

OM01 xmitter & sensor replaced. power cable re-routed through a new conduit to prevent potential EMF interference with sensor signal cable.

Log Number: 4534364Logbook(s): 

• HDLOG
• ELOG

Entry Makers: bbarkerBody: 

Log Number: 4534357Logbook(s): 

• ELOG

Body: Calibration ParametersHall:DTarget: 4.5x10-4 Al 40umPass: 5.5Note: Calibrated On:2026-Jul-11 10:12Calibrated By: alexsFile:D-2026-07-11_1012_4.5x10-4_Al_40um_Pass-5.5_High_Current.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)