Aggregator

Log Number: 4514470Logbook(s): 

• FMLOG
• ELOG

Entry Makers: kpriceBody: 

The line-line voltage for this switchboard has been in minor alarm for quite a long time. Are these alarm limits correct?

Log Number: 4514468Logbook(s): 

• SRFLOG
• ELOG
• RFLOG

Entry Makers: jhowardBody: 

Recovered with no issue after clearing fault on VIP1L26A. No valves closed.

Log Number: 4514466Logbook(s): 

• HCLOG
• ELOG

Entry Makers: victorcBody: 

Log Number: 4514463Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4514460Logbook(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)Dump Left25,535<

Log Number: 4514459Logbook(s): 

• HCLOG
• ELOG

Entry Makers: victorcBody: 

Log Number: 4514458Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4514454Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Howard
DATE:             06/21/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4514451Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Christian
DATE:             06/20/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4514446Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: victorc 06-21-26 00:10:49 {A:i B:1 C:3 E:1060 A=BS B=CW C=CW D=BS 0R08=56.34 No dumps in.

Log Number: 4514445Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Chaudhary
DATE:             06/21/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4514441Logbook(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 2026-06-13-2026-06-20"


Data directory: /cs/prohome/apps/s/smartRAT2/3-4/fileio/pca_data/output_cavityOutDet/calibrated_cavitylevel_centralize_tsfresh_minimal_gmespmes/whole/rcntnp/2026-06-13-2026-06-20/PCA/

Log Number: 4514427Logbook(s): 

• ELOG
• LERFLOG

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

Date : 06-20-26
Time : 23:16:39
Day : Saturday
Shift : Owl

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

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

Log Number: 4514425Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Beam to Halls B & C

Log Number: 4514424Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4514416Logbook(s): 

• ELOG

Entry Makers: kernsBody: 

Wanted to post a follow up to Ben's ELOG 4514338 but the MyaPlot of 1L20-4 problem would attach for some reason so I'll use Jeli with a screen grab :
Can't have gradient if the zone isn't in HV. KCCU and GMES were still indicating after HV dropped at 1750. This is a latched gradient measured fault and should have cleared except the RFCM lost comm. Couldn't clear until comm's restored after a long reboot which it eventually did after I got remote screens up !!

Log Number: 4514397Logbook(s): 

• ELOG

Entry Makers: kernsBody: 

Watchdog fault was most likely caused by drop in HV at 1751 when all but cavity 4's KCCU went to 0.0 a except cavity 4's . Cavity 4's GMES and KCCU where still indicating until 1828 which is when Sam Holben oncall rebooted the RFCM per my instruction to clear the Watchdog faults that where stuck !! After it didn't recover comm. per Sam, Sam instructed OPS to try to bypass the cavity but this didn't clear the fault or allow the zone to go into filaments.

Log Number: 4514365Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
1L20-3
Username: benesch
Date/Time: 06-20-26_19:21:30
RF Status: Good
Tuner Status: Good
Comment: DRVH=3.300 Arc Rate Management five arc-only at 3.4, equally spaced
Previous OPS DRVH: 3.4
Special Instructions:

Log Number: 4514364Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
2L12-4
Username: benesch
Date/Time: 06-20-26_19:20:16
RF Status: Good
Tuner Status: Good
Comment: DRVH=5.600 Arc Rate Management four at 5.75, equally spaced
Previous OPS DRVH: 5.75
Special Instructions:

Log Number: 4514362Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
2L08-4
Username: benesch
Date/Time: 06-20-26_19:19:22
RF Status: Good
Tuner Status: Good
Comment: DRVH=7.400 Arc Rate Management one each at 7.1 and 7.47, two at 7.61
Previous OPS DRVH: 0
Special Instructions: