Aggregator

Log Number: 4517438Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: 10cm DummyPass: 3Note: Calibrated On:2026-Jun-15 07:14Calibrated By: samariFile:C-2026-06-15_0714_10cm_Dummy_Pass-3.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton2,000</td

Log Number: 4517434Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19.5 was successfully run for the North Linac on 2026-06-27 18:25:24. The application phase took 00:00:20 to complete.

Log Number: 4517436Logbook(s): 

• HCLOG
• ELOG

Entry Makers: shrinerBody: 

Log Number: 4517435Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4517430Logbook(s): 

• ELOG
• RFLOG

Entry Makers: alexsBody: 

A little after 1500, the MO drive line temperature at 1L12 started dropping, leveling out about 20 degrees C lower. This seems to coincide with a loss of energy throughout the North Linac, as 1L19 also started creeping up until the zone started hitting its drive high. The gang phase of the zone shifted about 4 degrees, but only accounts for a small amount of the 7 MV/m increase 1L19.

Log Number: 4517424Logbook(s): 

• ELOG

Entry Makers: shrinerBody: 

smooth running. xC still at 25uA on Loop 2.

Log Number: 4517417Logbook(s): 

• ELOG

Entry Makers: shrinerBody: 

smooth running. mostly RF trips, but everything resets and comes back fine.
xC taking 25uA on Loop 2.

Log Number: 4517410Logbook(s): 

• DCLOG
• ELOG

Entry Makers: shrinerBody: 

took setpoint and cycled; no TC swap

Log Number: 4517402Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Shenenberger
DATE:             06/27/2026
SHIFT:               Swing

The operator has read the following:

Log Number: 4517395Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Shriner
DATE:             06/27/2026
SHIFT:               Swing

The operator has read the following:

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

Log Number: 4517388Logbook(s): 

• ELOG
• LERFLOG

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

Date : 06-27-26
Time : 15:30:22
Day : Saturday
Shift : Swing

Crew Chief : Blackshaw
Program Deputy: Nissen
Team : E
Arm : Shenenberger
Designated SSO: Shriner
LERF Operator:
Operators : Shenenberger, Shriner

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

Log Number: 4517384Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: xC Beam

Log Number: 4517383Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4517381Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl03

Saved: dthomas 06-27-26 15:13:49 {A:i B:1 C:3 E:1060 A=BS B=BS C=CW D=BS 0R08=25.29 No dumps in.

Log Number: 4517375Logbook(s): 

• ELOG

Entry Makers: schoeneBody: 

Cavity tuner does not work, but the cavity is on resonance, and was draining ~0.2MV/m (Fig 1). Put gradient back in the cavity and re-lem'd, seems to be behaving for now (Fig 2). Leaving the tuner in manual.

Log Number: 4517367Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
1L18-8
Username: benesch
Date/Time: 06-27-26_14:14:36
RF Status: Good
Tuner Status: Good
Comment: DRVH=9.650 Arc Rate Management five at 9.8 in sixteen hours at 9.8, equally spaced
Previous OPS DRVH: 9.8
Special Instructions:

Log Number: 4517338Logbook(s): 

• ELOG

Entry Makers: bbarkerBody: 

Log Number: 4517334Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: Loop 2 10cmPass: 3Note: Calibrated On:2026-Jun-15 04:06Calibrated By: samariFile:C-2026-06-15_0406_Loop_2_10cm_Pass-3.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton2,000</

Log Number: 4517333Logbook(s): 

• HCLOG
• ELOG

Entry Makers: bbarkerBody: 

Log Number: 4517331Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD