Aggregator

FFB flickering into standby

9 hours ago
Log Number: 4486312Logbook(s): Entry Makers: jhowardBody: 

We noticed some weird target lock deviations after a trip, and once we sent back, FFB started to flicker in and out. Sometimes the wire sum dipped, but not always. Position readbacks started to get more ratty, so we have paused FFB to investigate.

jhoward

1L10-2 discriminator is very slow to come to zero

12 hours 28 minutes ago
Log Number: 4486278Logbook(s): Entry Makers: kpriceBody: 

I don't think this is a new phenomenon, but perhaps worth noting. We're trying to understand why the discriminator value in this cavity (maybe other cavities in this zone?) seems to take so long to float back to zero when it trips into SEL, then again in the other direction when it switches into SELA. Plot shows the sinusoid we saw when we dropped the cavity for a POFF sweep and gave it time to walk itself back in.

kprice

iCalibrate: Hall C

12 hours 43 minutes ago
Log Number: 4486276Logbook(s): Body: Calibration ParametersHall:CTarget: Loop 3 4cmPass: 2Note: SHMS angle -10.67,current -396.1Calibrated On:2026-Mar-31 17:58Calibrated By: yoonFile:C-2026-03-31_1758_Loop_3_4cm_Pass-2.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)
dchri

Operator SIGN IN

14 hours 27 minutes ago
Log Number: 4486264Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Price
DATE:             04/11/2026
SHIFT:               Owl

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

Operator SIGN IN

14 hours 37 minutes ago
Log Number: 4486261Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Chaudhary
DATE:             04/11/2026
SHIFT:               Owl

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

smartRAT Cavity Instability Detection Daily Report

14 hours 54 minutes ago
Log Number: 4486254Logbook(s): Entry Makers: dturnerBody: smartRAT V3-3 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 2026-04-03-2026-04-10"


Data directory: /cs/prohome/apps/s/smartRAT2/3-3/fileio/pca_data/output_cavityOutDet/calibrated_cavitylevel_centralize_tsfresh_minimal_gmespmes/whole/rcntnp/2026-04-03-2026-04-10/PCA/
dturner

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MCC Crew Chief Humphry
MCC Operators Blackshaw, Janak
Program Deputy Ogur
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