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Anomaly detection at the European X-ray Free Electron Laser using a parity-space-based method

A. Eichler, J. Branlard, and J. H. K. Timm
Phys. Rev. Accel. Beams 26, 012801 – Published 4 January 2023

Abstract

A novel approach to detect anomalies in superconducting radio-frequency (rf) cavities is presented, based on the parity space method with the goal to detect quenches and distinguish them from other anomalies. The model-based parity space method relies on analytical redundancy and generates a residual signal computed from measurable rf waveforms. The residual is a sensitive indicator of deviation from the model and provides different signatures for different types of anomalies. This new method not only helps with detecting faults but also provides a catalog of unique signatures, based on the detected fault. The method was experimentally verified at the European X-ray Free Electron Laser (EuXFEL). Various types of anomalies incorrectly detected as quenches by the current quench detection system are analyzed using this new approach.

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  • Received 28 February 2022
  • Accepted 5 December 2022

DOI:https://doi.org/10.1103/PhysRevAccelBeams.26.012801

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Accelerators & Beams

Authors & Affiliations

A. Eichler*, J. Branlard, and J. H. K. Timm

  • Deutsches Elektronen-Synchrotron DESY, Germany

  • *Corresponding author. annika.eichler@desy.de

Article Text

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Issue

Vol. 26, Iss. 1 — January 2023

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