1 Matching Results

Search Results

Advanced search parameters have been applied.

Surface Impedance Formalism for a Metallic Beam Pipe with Small Corrugations

Description: A metallic pipe with wall corrugations is of special interest in light of recent proposals to use such a pipe for the generation of terahertz radiation and for energy dechirping of electron bunches in free electron lasers. In this paper we calculate the surface impedance of a corrugated metal wall and show that it can be reduced to that of a thin layer with dielectric constant {epsilon} and magnetic permeability {mu}. We develop a technique for the calculation of these constants, given the geometrical parameters of the corrugations. We then calculate, for the specific case of a round metallic pipe with small corrugations, the frequency and strength of the resonant mode excited by a relativistic beam. Our analytical results are compared with numerical simulations, and are shown to agree well.
Date: August 30, 2012
Creator: Stupakov, G. & Bane, K. L. F.
Partner: UNT Libraries Government Documents Department