Multipactor Mitigation in Coaxial Lines by Means of Permanent Magnets

作者：Gonzalez Iglesias Daniel^*; Perez Antonio M; Anza Sergio; Vague Cardona Joaquin; Gimeno Benito; Boria Vicente E; Raboso David; Vicente Carlos; Gil Jordi; Caspers Fritz; Conde Luis

来源：IEEE Transactions on Electron Devices, 2014, 61(12): 4224-4231.

DOI：10.1109/TED.2014.2361172

• Coaxial waveguide
• dc magnetic field
• multipactor effect
• multipactor mitigation
• permanent magnet
• RF breakdown

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.

• 出版日期2014-12