Aggregator

Log Number: 4497050Logbook(s): 

• HDLOG
• ELOG

Entry Makers: dchriBody: 

BPM BS02 not being used by locks.
Monitoring it for now, will likely perform a local reset if it remains unresolved

FIG. 1
indicates lost comms & Heartbeat stopped shortly after restoring

FIG. 2
Shortly after lost comms & Heartbeat stopped

FIG. 3
BPM BS02 is the only BS BPM which was effected

FIG. 4
BPM BS02 not being used by locks

Log Number: 4497048Logbook(s): 

• HDLOG
• ELOG

Entry Makers: dchriBody: 

No intervention needed. IOC has restored

Signal List seems to include IPMBS02 and not much else

Log Number: 4497040Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Price
DATE:             05/10/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4497037Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Christian
DATE:             05/10/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4497036Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Chaudhary
DATE:             05/10/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4497035Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

Lost my screenshot of the earlier settings, but they can be found in the logbook. These two seem less prone to oscillation and respond quicker.

Log Number: 4497028Logbook(s): 

• ELOG

Entry Makers: dchriBody: 

Just a quick look at where everything is sitting....

Start of Shift save/restore, Save/restore number:
27135 (prior to Swing Opsbat9 reboot)
27136 (start of shift)

Figure 1:
Sections (restricted/controlled/power/beam)

Figure 2:
Status of all Halls & Wall Screens

Hall A - OFF (scheduled off per NPES)
Hall B - 3nA (1 um C) --> soon increasing to 5nA
Hall C - OFF (due to target ladder repairs)
Hall D - 25nA (JD70-107 55um 45/135 deg)

Figure 3:
Low Current Hall xB Halo Counters
Low Current Hall xB Positions

Figure 4:
Low Current Hall xD Ion Chambers

Figure 5:
Current and Asymmetry Lock Con

Log Number: 4497024Logbook(s): 

• HBLOG
• ELOG

Entry Makers: yoonBody: 

Log Number: 4497022Logbook(s): 

• DCLOG
• ELOG

Entry Makers: yoonBody: 

swapped TC

Log Number: 4497019Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: jhoward 05-09-26 23:23:09 {A:i B:5 C:2 E:345 A=BS B=CW C=Tune D=CW 0R08=5.40 dump(s) in.

Log Number: 4497018Logbook(s): 

• ELOG
• LERFLOG

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

Date : 05-09-26
Time : 23:21:33
Day : Saturday
Shift : Owl

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

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

Log Number: 4497016Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: CW to Hall D. Hall B halo investigation.

Log Number: 4497015Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4497012Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

Log Number: 4497011Logbook(s): 

• ELOG

Body: Calibration ParametersHall:DTarget: JD70-107 55um 45/135 degPass: 5.5Note: Calibrated On:2026-May-03 18:47Calibrated By: alexsFile:D-2026-05-03_1847_JD70-107_55um_45_135_deg_Pass-5.5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)

Log Number: 4497004Logbook(s): 

• ELOG

Entry Makers: eformanBody: 

Log Number: 4496998Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

Log Number: 4496997Logbook(s): 

• ELOG

Body: Calibration ParametersHall:DTarget: 1.1x10-3 Al 100umPass: 5.5Note: Calibrated On:2026-May-02 07:48Calibrated By: msmithFile:D-2026-05-02_0748_1.1x10-3_Al_100um_Pass-5.5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)East Wa

Log Number: 4496988Logbook(s): 

• HDLOG
• HBLOG
• ELOG

Entry Makers: eformanBody: 

We are awaiting Software to recover the current locks and generic locks (the Hall D position locks are run under the generic lock server). The system expert is about an hour away from being able to recover those.

Hall B should be unaffected as they were only running 3 nA without the current lock and the CLAS12 position locks are run from a different server.

Hall D has consulted their RC and has agreed to take beam without current or position locks. One of the operators has been tasked to watch Hall D positions and current and manually adjust as necessary until the software is fixed.

Log Number: 4496987Logbook(s): 

• HBLOG
• ELOG

Entry Makers: yoonBody: