Network representation of multi-cell accelerating structures

Author

Raguin, J.Y.

Author_Institution

CERN, Geneva, Switzerland

Volume

4

fYear

2001

fDate

2001

Firstpage

3027

Abstract

The analysis of the electrodynamic properties of a complete multi-cell accelerating structure using electromagnetic numerical simulation codes is presently at the edge of existing computer capabilities. To overcome this limitation, a network representation is proposed which derives the overall scattering transfer matrix of such multi-cell structures from single-cell data calculated using the commercial finite-element code HFSS. For a constant-impedance structure, computation of the eigenvalues of this matrix allows dispersion diagrams to be obtained. In the more general case, this formalism leads to a representation of the coupled-chain of cavities as a set of cascaded non identical multipoles

Keywords

S-matrix theory; accelerator cavities; eigenvalues and eigenfunctions; finite element analysis; high energy physics instrumentation computing; transfer function matrices; HFSS; constant-impedance structure; coupled cavities chain; dispersion diagrams; eigenvalues; electrodynamic properties; electromagnetic numerical simulation codes; finite-element code; multicell accelerating structures; network representation; scattering transfer matrix; single-cell data; Acceleration; Computational geometry; Dispersion; Electrodynamics; Electromagnetic scattering; Finite element methods; Frequency; Maxwell equations; Particle scattering; Transmission line matrix methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001

Conference_Location

Chicago, IL

Print_ISBN

0-7803-7191-7

Type

conf

DOI

10.1109/PAC.2001.987993

Filename

987993