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iCalibrate: Hall C
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"Hall C BNR for configuration change"
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Put South Linac Gang Phase Off-Crest
Going up to 18.5 uA to hall C we saw a large uptick in hall B upstream halo rates as well as IIX6S01 dose. Going off crest +1.3 degrees in the south lowered the upstream halo rates by a factor of 10 as well as decreased the 6S01 ose by 4. The only negative is a slight uptick in dose at 4E02.
QuickPic - Hall C: 18.5 uA-> 10 cm Dummy
iCalibrate: Hall C
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VIP2L01 Slowly degrading
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smartRAT Cavity Instability Detection Daily Report
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 2026-04-26-2026-05-03"
Data directory: /cs/prohome/apps/s/smartRAT2/3-4/fileio/pca_data/output_cavityOutDet/calibrated_cavitylevel_centralize_tsfresh_minimal_gmespmes/whole/rcntnp/2026-04-26-2026-05-03/PCA/
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CREW CHIEF SIGN IN
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 05-03-26
Time : 23:18:52
Day : Sunday
Shift : Owl
Crew Chief : Deir
Program Deputy: Sereno
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:
Crew Chief Shift Log, 2026-05-03 SWING
Start of shift: CW Beam to xB/C/D.
Crew Chief Timesheet Summary: 03 May 2026 SWING
2L10-7 tuner bad position errors
Twice now, the cavity's tuner position readback has jumped -60k steps and triggered a bad position error. It's definitely a faulty readback since there is no change in GMES or forward power, so leaving the cavity on for now, but could use addressing on a maintenance day.
ODH head OM216 at LERF User Lab #4 has been bypassed.
Hall D 5C11B PID lock parameters changed to reduce orbit oscillation
Hall D's positions have been very swingy since bringing them up, and it appears the PID orbit locks are partially to blame. When the PID locks are engaged, almost every change to the associated magnet has been the maximum allowed value, 150 BdL, suggesting the PID parameters are not set to helpful values. I am also no expert on these loops, but for the time being, changing the max change from 150 to 30 has reduced the amplitude of the X position oscillations.










