Aggregator

Log Number: 4527301Logbook(s): 

• ELOG
• LERFLOG

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

Date : 07-19-26
Time : 23:15:51
Day : Sunday
Shift : Owl

Crew Chief : Price
Program Deputy: KLarrieu
Team : D
Arm : Chaudhary
Designated SSO: Christian
LERF Operator:
Operators : Howard, Chaudhary, Christian

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

Log Number: 4527299Logbook(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)Compton1,823</

Log Number: 4527297Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: CW beam to B, C, and D.

Log Number: 4527298Logbook(s): 

• HCLOG
• ELOG

Entry Makers: yoonBody: 

Log Number: 4527291Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4527275Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

Looks good.

Log Number: 4527273Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

Turned back on without trouble.

Log Number: 4527272Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17463Title:
Pass 4 RF separator tripped

Summary:
pass 4 separator tripped off, ops recovered and checking separationDuration:
13 minutes

Time Down:
19-Jul-2026 21:55

Ti

Log Number: 4527271Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System UN-Masking for: BeamLossMonitor
User: bschauml
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
IL

Log Number: 4527270Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17463Title:
Pass 4 RF separator tripped

Summary:
pass 4 separator tripped off, ops recovered and checking separationDuration:
11 minutes

Time Down:
19-Jul-2026 21:55

Ti

Log Number: 4527269Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System Masking for: BeamLossMonitor
User: bschauml
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: 4527258Logbook(s): 

• HCLOG
• ELOG

Entry Makers: yoonBody: 

Log Number: 4527257Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4527255Logbook(s): 

• HCLOG
• ELOG

Entry Makers: yoonBody: 

Log Number: 4527254Logbook(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)Compton1,800</

Log Number: 4527253Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4527241Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

This cavity dropped out on a P1 fault and I was unable to bring it back up the usual way. I tried the first few steps of an OLT but whenever the RF output switch was closed the "Hardware interrupt iir2 (vacuums)" and "P1 ... micro fault" would illuminate and the switch would open again. Vacuum seems fine. The cavity has been GSET 0 and stepped off.

Log Number: 4527238Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

Noted that Arc 9 is out of range so we only applied correction through Arc 8. This brought all passes within spec.

Log Number: 4527237Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17462Title:
2L13-2 Hardware interrupt fault (vacuum) - GSETting 0

Summary:
2L13-2 Hardware interrupt fault (vacuum) - Not allowing RFON.

Log Number: 4527235Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System UN-Masking for: BeamLossMonitor
User: bschauml
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
IL