Title :
Network representation of multi-cell accelerating structures
Author_Institution :
CERN, Geneva, Switzerland
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;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.987993
