Coupling structure for a high Q corrugated cavity as a microwave undulator

Zhang, Liang and He, Wenlong and Donaldson, Craig R. and Clarke, Jim and Ronald, Kevin and Phelps, Alan D. R. and Cross, Adrian W. (2019) Coupling structure for a high Q corrugated cavity as a microwave undulator. IEEE Transactions on Electron Devices. ISSN 0018-9383 (In Press)

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    Abstract

    Microwave undulators can achieve smaller wiggler periods when compared with permanent magnet undulators. This work follows on the design of a microwave undulator composed of a corrugated waveguide operating at 36 GHz. Compatible end caps and coupling structures for the waveguide to form a complete cavity were studied and are presented in this paper. Their design is scalable for different operating frequencies and periods of the corrugated waveguide. A set of empirical equations, that allows the geometry to be determined analytically, were found from the post-processing of the FDTD simulation.