Aggregator

Log Number: 4500713Logbook(s): 

• ELOG

Entry Makers: msmithBody: 

An ABIL entry was added for OM225 earlier on Swing shift but the sensor was not bypassed on the ODH control module in the LERF. On Owl shift we got a brief PSS alarm for this ODH head. The head is now fully bypassed.

Log Number: 4500699Logbook(s): 

• ELOG

Tags: 

• CED

Body: The following control system variables were updated because they were detected to differ from their CED property counter-parts.

• R1A1ODVH: found 11.3; restored to CED value of 10.7

Log Number: 4500698Logbook(s): 

• ELOG
• RFLOG

Entry Makers: msmithBody: 

Zone dropped out of HV. We cleared the fault and attempted to bring it back into HV but it tripped again. Cavity 1 has been bypassed, zone is back in HV.

Log Number: 4500697Logbook(s): 

• ELOG
• RFLOG

Entry Makers: samariBody: 

Took .6 MV/m out of Cav 1 traded for a .8 R reduction

Log Number: 4500696Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been bypassed:
2L02-1
Username: msmith
Date/Time: 05-18-26_02:19:31
RF Status: Bad
Tuner Status: Good
Comment: Bypassed - stepped off +100k - KMAI faults
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4500695Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
1L10-1
Username: samari
Date/Time: 05-18-26_02:16:18
RF Status: Good
Tuner Status: Good
Comment: DRVH=10.700 nuetron dose redux until trading 1 R / 1 MV/m.
Previous OPS DRVH: 11.3
Special Instructions:

Log Number: 4500691Logbook(s): 

• ELOG
• RFLOG

Entry Makers: samariBody: 

1L02-2 is the main culprit, reduced by 0.6 MV/m and updated drive high

Log Number: 4500689Logbook(s): 

• ELOG

Tags: 

• CED

Body: The following control system variables were updated because they were detected to differ from their CED property counter-parts.

• R122ODVH: found 8.6; restored to CED value of 7

Log Number: 4500688Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
1L02-2
Username: samari
Date/Time: 05-18-26_01:57:16
RF Status: Good
Tuner Status: Good
Comment: DRVH=7.000 gamma rate reduction on IIX1L02
Previous OPS DRVH: 0
Special Instructions:

Log Number: 4500678Logbook(s): 

• HDLOG
• ELOG

Entry Makers: msmithBody: 

Log Number: 4500676Logbook(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: 4500671Logbook(s): 

• ELOG

Body: The following entry was removed from the Accelerator Bypassed-Interlocks Log (ABIL) Tag # 9753 Device: OMB06 Function: Oxygen Monitor Location: Hall B - Access Tunnel Purpose: Dying(?) sensor Removed By: samari

Log Number: 4500663Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Smith
DATE:             05/17/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4500659Logbook(s): 

• ELOG

Entry Makers: deirBody: 

Log Number: 4500657Logbook(s): 

• ELOG
• RFLOG

Entry Makers: dturnerBody: smartRAT V3-4 on opsrfdaqnl1

To view waveforms from a timestamp:

ssh opsrfdaqnl1 "smartRAT -m DAQ -d /data/fast_daq/<timestamp>"


To view waveforms of the top 25 from this report:

ssh opsrfdaqnl1 "smartRAT_view_daily_top25 2026-05-10-2026-05-17"


Data directory: /cs/prohome/apps/s/smartRAT2/3-4/fileio/pca_data/output_cavityOutDet/calibrated_cavitylevel_centralize_tsfresh_minimal_gmespmes/whole/rcntnp/2026-05-10-2026-05-17/PCA/

Log Number: 4500656Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Samari
DATE:             05/17/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4500655Logbook(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: 4500647Logbook(s): 

• DCLOG
• ELOG

Entry Makers: shrinerBody: 

took setpoint and cycled; no TC swap

Log Number: 4500645Logbook(s): 

• ELOG
• LERFLOG

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

Date : 05-17-26
Time : 23:19:32
Day : Sunday
Shift : Owl

Crew Chief : Deir
Program Deputy: Drury
Team : A
Arm : Smith
Designated SSO: Samari
LERF Operator:
Operators : Samari, Smith

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

Log Number: 4500642Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: CW to Halls B/C/D.