Y. Kang, G. Waldschmidt (Argonne National Laboratory, Argonne, IL 60439)
Twisted hollow waveguides with specific noncircular cross sections can be treated as a slow wave structure. Propagating radio frequency (rf) waveguide modes can have phase velocities slower than the phase velocities of similar modes in a straight waveguide. This property is very interesting since a twisted waveguide basically has a uniform cross section. In such a waveguide, periodic standing waves may exist regardless of the mechanical periodicity. This type of waveguide structure may have applications in acceleration, bunch compression, and deflection of charged particles, etc. Analytical and numerical results of the investigation of these waveguides for the above properties are presented.
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