Aggregator

SL C100 FE Scan

14 hours 15 minutes ago
Log Number: 4542122Logbook(s): Entry Makers: samariBody: 

Found 3 cavities that moved the needle with a .1 MV/m step: 2L22-5 (-1.7 MV/m), 2L24-7 (-.9 MV/m), and 2L25-6 (-3 MV/m). These three reductions nearly halved the SL neutron dose for a loss of 3.9 MeV.

Once again did not change drive high, I'll let experts decide.

samari

2L14-3 Drive Line Failing?

14 hours 25 minutes ago
Log Number: 4542114Logbook(s): Entry Makers: samariBody: 

Cavity started SOSing, so I attempted a quick close loop tune, but the TDOff seemed to be in a good spot. Lowered attenuator to 0, but now its creeping back up. We'll derate it and hope it stays stable.

samari

Scanned all NL C75/C100s for FE

15 hours 28 minutes ago
Log Number: 4542093Logbook(s): Entry Makers: samariBody: 

Only found 2 cavities that changed the neutron dose rate at all by changing .1 MV/m: 1L10-1 and 1L23-7
Derating these cavities until they no longer moved the needle (-1 MV/m and -1.3 MV/m respectively, so total -1.4 MeV) reduced the total neutron dose across the NL by 15%.

I haven't updated DRVHs yet in case the experts would prefer the headroom

samari

iCalibrate: Hall D

16 hours 42 minutes ago
Log Number: 4542066Logbook(s): Body: Calibration ParametersHall:DTarget: JD80-213 80um 0/90 degPass: 5.5Note: Calibrated On:2026-Jul-30 09:33Calibrated By: dthomasFile:D-2026-07-30_0933_JD80-213_80um_0_90_deg_Pass-5.5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)
msmith

Operator SIGN IN

18 hours 18 minutes ago
Log Number: 4542037Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Samari
DATE:             08/13/2026
SHIFT:               Owl

The operator has read the following:
  • ELOG
  • PD Shift Plan
  • Radiation Surveys for PSS Segments in Controlled Access
  • PSS Log
samari

Operator SIGN IN

18 hours 23 minutes ago
Log Number: 4542034Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Smith
DATE:             08/13/2026
SHIFT:               Owl

The operator has read the following:
  • ELOG
  • PD Shift Plan
  • Radiation Surveys for PSS Segments in Controlled Access
  • PSS Log
msmith

smartRAT Cavity Instability Detection Daily Report

18 hours 32 minutes ago
Log Number: 4542025Logbook(s): Entry Makers: dturnerBody: smartRAT Vpro 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 2026-08-05-2026-08-12"


Data directory: /cs/prohome/apps/s/smartRAT2/pro/fileio/pca_data/output_cavityOutDet/calibrated_cavitylevel_centralize_tsfresh_minimal_gmespmes/whole/rcntnp/2026-08-05-2026-08-12/PCA/
dturner

iCalibrate: Hall D

18 hours 35 minutes ago
Log Number: 4542021Logbook(s): Body: Calibration ParametersHall:DTarget: 4.5x10-4 Al 40umPass: 5.5Note: Calibrated On:2026-Jul-11 10:12Calibrated By: alexsFile:D-2026-07-11_1012_4.5x10-4_Al_40um_Pass-5.5_High_Current.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)
dthomas

CREW CHIEF SIGN IN

19 hours 18 minutes ago
Log Number: 4542012Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 08-12-26
Time : 23:13:12
Day : Wednesday
Shift : Owl

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

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

Late Entry: 2L14-8 OLT

19 hours 20 minutes ago
Log Number: 4542010Logbook(s): Entry Makers: shrinerBody: 

While recovering zone from HV trip, cavity 8 was SOSing and had high GASK. Attempted OLT several times and had to lower attenuator from 9.0 to 5.0

shriner

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CEBAF Program
MCC Crew Chief Richardson
MCC Operators Anthony, Shriner
Program Deputy Park
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