Aggregator
CREW CHIEF SIGN IN
Log Number: 4491882Logbook(s): 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:
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:
Autolog save
Crew Chief Shift Log, 2026-04-26 DAY
Log Number: 4491875Logbook(s): Tags: Body:
CEBAF SHIFT LOG
Shift Summary
Start of shift: Beam to HB/HC
Crew Chief Timesheet Summary: 26 Apr 2026 DAY
Log Number: 4491874Logbook(s): Tags: Body:
Accelerator
PHYSICS
STUDIES
RESTORE
ACC
DOWN
OFF (SAM)
Planned
8
0
0
QuickPic - HC request 10 uA on Loop 3
Downtime Incident CLOSED: Hall C Target/Spectrometer/Magnet Change
AutoLog - UNMasking Hall C Normal Target
iCalibrate: Hall C
"HC BNR for configuration change"
Downtime Incident CREATED: Hall C Target/Spectrometer/Magnet Change
AutoLog - Masking Hall C Normal Target
Hall B -> 3 nA empty target
QuickPic - HC request 25uA on 4cm Dummy
AutoLog - UNMasking Hall C Normal Target
iCalibrate: Hall C
AutoLog - Masking Hall C Normal Target
LERF ODH Alarm
Log Number: 4491810Logbook(s): 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
ODH head OM205 at LERF RF Gallery - Zone 01 has been bypassed.
Log Number: 4491801Logbook(s): 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.










