Aggregator

Log Number: 4491887Logbook(s): 

• DCLOG
• ELOG

Entry Makers: bjacobBody: 

Took set point and cycled without issue.

Log Number: 4491882Logbook(s): 

• ELOG
• LERFLOG

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

Date : 04-26-26
Time : 15:16:05
Day : Sunday
Shift : Swing

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

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

Log Number: 4491880Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl05

Saved: eforman 04-26-26 15:17:49 {A:i B:3 C:2 E:345 A=BS B=CW C=CW D=BS 0R08=9.57 No dumps in.

Log Number: 4491875Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Beam to HB/HC

Log Number: 4491874Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4491868Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Log Number: 4491867Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16802Title:
Hall C Target/Spectrometer/Magnet Change

Summary:
BNR for Hall changesDuration:
47 minutes

Time Down:
26-Apr-2026 13:22

Time Up:
26-Apr-2026 14:09

Log Number: 4491857Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4491856Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: Loop 3 4cmPass: 2Note: SHMS angle -10.67,current -396.1Calibrated On:2026-Mar-31 17:58Calibrated By: yoonFile:C-2026-03-31_1758_Loop_3_4cm_Pass-2.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)

Log Number: 4491851Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Log Number: 4491850Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16802Title:
Hall C Target/Spectrometer/Magnet Change

Summary:
BNR for Hall changesDuration:
2 minutes

Time Down:
26-Apr-2026 13:22

Time Up:

Log Number: 4491849Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4491840Logbook(s): 

• HBLOG
• ELOG

Entry Makers: bjacobBody: 

Turned on the current lock to see how it handles the increased current.

Log Number: 4491831Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Log Number: 4491828Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4491827Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: 4cm DummyPass: 2Note: SHMS angle -17.34,current -422.3Calibrated On:2026-Mar-30 23:40Calibrated By: yoonFile:C-2026-03-30_2340_4cm_Dummy_Pass-2.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)

Log Number: 4491826Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4491810Logbook(s): 

• ELOG

Entry Makers: bjacobBody: 

OM205 in the LERF gallery went into alarm. I and the other operator responded and found no signs of hazard (no plumes, no hissing noises, our personal oxygen monitors didn't alarm). Bypassed the head for now. When we returned to the control room we found that the oxygen monitor seemed to reading appropriately again. We are leaving it bypassed for now and we'll let SSG take a look at it on Monday

Log Number: 4491801Logbook(s): 

• ELOG
• LERFLOG

Body: The following entry was placed in the Accelerator Bypassed-Interlocks Log (ABIL) Device: OM205 Function: Oxygen Monitor Location: LERF RF Gallery - Zone 01 Purpose: Sensor alarmed. Area surveyed and sensor bypassed. No adjacent heads in alarm/bypassed Exp.

Log Number: 4491792Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16801Title:
Hall B: Beam Centering

Summary:
Request if beam centering is required from RCDuration:
31 minutes

Time Down:
26-Apr-2026 10:38

Time Up:
26-Apr-2026