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Design of couplers for traveling wave RF structures using 3D electromagnetic codes in the frequency domain

2007; Elsevier BV; Volume: 580; Issue: 3 Linguagem: Inglês

10.1016/j.nima.2007.06.045

1872-9576

David Alesini, A. Gallo, B. Spataro, Agostino Marinelli, L. Palumbo,

Gyrotron and Vacuum Electronics Research

In this paper, a simple equivalent circuit model of a traveling wave RF structure with input and output couplers is introduced. A few properties related to evaluating the reflection coefficient of the single coupler are then obtained and discussed. From these properties, a general procedure to design couplers for traveling wave structures using 3D electromagnetic codes in the frequency domain is derived. Finally, an example of coupler design for a 2π/3 X band accelerating structure is illustrated.