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Estimation of superconducting cavity bandwidth and detuning using a Luenberger observer
Citation Link: https://doi.org/10.15480/882.16812
Publikationstyp
Preprint
Date Issued
2025-07-10
Sprache
English
TORE-DOI
Citation
arXiv.2506.21207 (2025)
Publisher DOI
ArXiv ID
Peer Reviewed
false
Enabled by progress in superconducting technology, several continuous wave linear accelerators are foreseen in the next decade. For these machines, it is of crucial importance to track the main cavity parameters, such as the resonator bandwidth and detuning. The bandwidth yields information on the superconducting state of the cavity. The detuning should be minimized to limit the required power to operate the cavity. The estimation of these parameters is commonly implemented in the digital electronics of the Low-Level RF control system to minimize the computation delay. In this proceeding, we present a way to compute the bandwidth and detuning using a Luenberger observer. In contrast to previous methods, a state observer yields estimations at the native control system sample rate without explicitly filtering the input signals. Additionally, the error convergence properties of the estimations can be controlled intuitively by adjusting gain parameters. Implementation considerations and test results on the derived observer are presented in the manuscript.
Subjects
physics.acc-ph
eess.SY
DDC Class
621.38: Electronics, Communications Engineering
004: Computer Sciences
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