Theoretical study of the folded waveguide

Author

Chen, G.L. ; Owens, T.L. ; Whealton, J.H.

Author_Institution

Oak Ridge Nat. Lab., TN, USA

Volume

16

Issue

2

fYear

1988

fDate

4/1/1988 12:00:00 AM

Firstpage

305

Lastpage

311

Abstract

A three-dimensional (3-D) algorithm for solving Maxwell´s equations is applied to the analysis of folded waveguides used for fusion plasma heating at the ion cyclotron resonance frequency (ICRF). In this method a finite-difference method is used with a successive overrelaxation (SOR) convergence scheme and a method of treating boundaries that allows the cavity to have an arbitrary shape. A rigorous analysis of the magnetic-field structure in the folded waveguide is presented. The results are compared with experimental measurements in vacuum. To study breakdown problems, a much simpler two-dimensional (2-D) model is adopted. It is found from the 2-D analysis that the geometry, shape, and thickness of the vanes play an important role in avoiding voltage breakdown problems

Keywords

difference equations; plasma filled waveguides; waveguide theory; Maxwell´s equations; arbitrary shape; boundaries; cavity; convergence scheme; finite-difference method; folded waveguide; fusion plasma heating; ion cyclotron resonance frequency; magnetic-field structure; successive overrelaxation; thickness; three dimensional algorithm; vanes; voltage breakdown problems; Algorithm design and analysis; Cyclotrons; Heating; Magnetic analysis; Magnetic resonance; Maxwell equations; Plasma waves; Resonant frequency; Shape; Waveguide theory;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.3829

Filename

3829