Title :
Multipactor discharge on a dielectric
Author :
Kishek, R.A. ; Lau, Y.Y.
Author_Institution :
Dept. of Nucl. Eng., Michigan Univ., Ann Arbor, MI, USA
Abstract :
This paper proposes a novel theory of a single-surface multipactor discharge on a dielectric, such as an RF window. Using a Monte Carlo simulation, we obtain the susceptibility diagram, applicable to a wide range of materials, in terms of the RF electric field and of the DC electric field that may result from dielectric charging. The electron multiplication mechanism assumes realistic yield curves of secondary electrons, including distributions of emission velocities and angles for these electrons. The susceptibility diagram thus constructed allows an immediate assessment of the range of RF power over which multipactor may be expected to occur. A simple analytic theory which corroborates the simulation results is presented
Keywords :
Monte Carlo methods; accelerator RF systems; high energy physics instrumentation computing; DC electric field; Monte Carlo simulation; RF electric field; RF window; accelerator RF system; analytic theory; dielectric; electron multiplication; emission velocities; secondary electrons; single-surface multipactor discharge; susceptibility diagram; yield curves; Analytical models; Ceramics; Dielectric materials; Electron emission; Microwave devices; Rough surfaces; Surface charging; Surface discharges; Surface roughness; Surface treatment;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.753154