Multipactor Mitigation in Coaxial Lines by Means of Permanent Magnets

Author

Gonzalez-Iglesias, D. ; Perez, A.M. ; Anza, S. ; Vague Cardona, J. ; Gimeno, B. ; Boria, V.E. ; Raboso, D. ; Vicente, C. ; Gil, J. ; Caspers, F. ; Conde, L.

Author_Institution

Dept. of Appl. PhysicsInstitute of Mater. Sci., Univ. of Valencia, Valencia, Spain

Volume

61

Issue

12

fYear

2014

fDate

Dec. 2014

Firstpage

4224

Lastpage

4231

Abstract

The main aim of this paper is the analysis of the feasibility of employing permanent magnets for the multipactor mitigation in a coaxial waveguide. First, the study of a coaxial line immersed in a uniform axial magnetic field shows that multipactor can be suppressed at any RF if the external magnetic field is strong enough. Both theoretical simulations and experimental tests validate this statement. Next, multipactor breakdown of a coaxial line immersed in a hollow cylindrical permanent magnet is analyzed. Numerical simulations show that multipactor can be suppressed in a certain RF range. The performed experimental test campaign demonstrates the capability of the magnet to avoid the multipactor electron multiplication process.

Keywords

coaxial cables; coaxial waveguides; magnetic fields; microwave switches; permanent magnets; coaxial lines; coaxial waveguide; external magnetic field; hollow cylindrical permanent magnet; multipactor electron multiplication process; multipactor mitigation; uniform axial magnetic field; Discharges (electric); Magnetic domains; Magnetic resonance; Permanent magnets; Radio frequency; Trajectory; Coaxial waveguide; RF breakdown; RF breakdown.; dc magnetic field; multipactor effect; multipactor mitigation; permanent magnet;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2014.2361172

Filename

6926820