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physics.acc-ph2026
The transient behavior of superconducting multi-cell accelerating cavities
Volker Ziemann
We employ an equivalent-circuit model of a multi-cell cavity to explore its time-dependent behavior in order to understand differences between the multi-cell model and the commonly…
physics.acc-ph2026
Analytic Expressions for Shielded Halbach Multipoles
Volker Ziemann
We employ the method of images to derive analytic expressions for the magnetic field of Halbach multipoles that are enclosed in high-permeability shielding.
physics.acc-ph2023
A new method to measure the unloaded quality factor of superconducting cavities
Volker Ziemann
We describe an method that measures the unloaded quality factor , the external quality factor , and the cavity detuning with a recursive least-squares algorithm. It…
physics.acc-ph2023
Simulations of real-time system identification for superconducting cavities with a recursive least-squares algorithm
Volker Ziemann
We explore the performance of a recursive least-squares algorithm to determine the bandwidth and the detuning of a superconducting cavity. We base the simulations on…