Beam coupling impedances of axial symmetric structures

Author

Bruns, W.

Author_Institution

Tech. Univ. Berlin, Germany

fYear

1993

fDate

17-20 May 1993

Firstpage

3714

Abstract

The transverse and longitudinal coupling impedances of axial symmetric geometries with an arbitrary number of cross section jumps are calculated. Field matching with renormalized wave amplitudes is applied at planes z=z_n. The resulting linear equations are solved straightforward, leading to good numerical stability. The Dirac-like pulses of the impedances below cut-off or of structures with trapped modes are avoided using a complex permittivity. Numerical results are presented for a sample detuned structure with more than 400 different radii

Keywords

beam handling equipment; numerical analysis; particle beams; Dirac-like pulses; axial symmetric geometries; axial symmetric structures; beam coupling impedances; complex permittivity; cross section jumps; cut-off; field matching; linear equations; longitudinal coupling impedance; numerical results; numerical stability; renormalized wave amplitudes; sample detuned structure; transverse coupling impedance; trapped modes; Boundary conditions; Geometry; Impedance; Integral equations; Linear systems; Numerical stability; Optical coupling; Scattering; Testing; Transmission line matrix methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.309840

Filename

309840