Self-Consistent Field Model for the Complex Cavity Gyrotron.

Abstract

Mode competition in gyrotrons with highly overmoded cavities can degrade efficiency and output mode purity. One approach to mode selection which has been demonstrated experimentally involves a sudden change in the cavity radius. Cavities with this feature are called complex-or step-cavities. This paper presents a theoretical model for the step-cavity gyrotron. The model applied to steady state operation. The axial variation of the cavity RF fields is determined self-consistently with the electron beam motion by integration of the wave equation simultaneously with the nonlinear electron equations of motion. The model accounts for mode conversion effects at the step as well as beam loading effects such cavity Q modification and frequency pulling. The model is applied to the analysis of a TE01/TE04 complex cavity gyrotron.

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Document Details

Document Type
Technical Report
Publication Date
Sep 17, 1987
Accession Number
ADA184983

Entities

People

  • Arne W. Fliflet
  • M. E. Read
  • R. C. Lee

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Classification
  • Competition
  • Conversion
  • Differential Equations
  • Efficiency
  • Electron Beams
  • Electrons
  • Engineering
  • Equations
  • Equations Of Motion
  • Frequency
  • Gyrotrons
  • Magnetic Fields
  • Millimeter Waves
  • Physics Laboratories
  • Steady State
  • Wave Equations

Fields of Study

  • Physics

Readers

  • Microwave Engineering.
  • Optical Physics and Photonics.
  • Plasma Physics / Magnetohydrodynamics

Technology Areas

  • Directed Energy
  • Microelectronics