Nonlinear Analysis of Ubitron, Orbitron, and Gyroharmonitron Mechanisms

Abstract

The research program during the contract period consisted of the analysis of the Ubitron/FEL amplifier in three-dimensions. The principal configuration of interest consisted of the propagation of an energetic electron beam through a loss-free rectangular waveguide in the presence of a linearly polarized wiggler field with parabolically tapered pole pieces. The purpose of the tapered pole faces is to provide a mechanism for focussing the electron beam in the plane of the bulk wiggler induced oscillation. A nonlinear theory and simulation code has been developed to study this configuration which can treat a multiple mode interaction, harmonic growth, efficiency enhancement by means of a tapered wiggler, the effect of beam thermal spread on the interaction, the injection of the beam into the wiggler, and detailed facets of the particle dynamics such as Betatron oscillations and velocity shear. Comparisons of the experiment at the Lawrence Livermore National Laboratory are excellent. (rh)

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1987
Accession Number
ADA225472

Entities

Organizations

  • Leidos

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Coherent Radiation
  • Differential Equations
  • Electron Beams
  • Free Electron Lasers
  • Free Electrons
  • Frequency
  • High Gain
  • Laser Amplifiers
  • Lasers
  • Linear Accelerators
  • Magnetic Fields
  • Nonlinear Analysis
  • Numerical Analysis
  • Radiation
  • Simulations
  • Three Dimensional

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Plasma Physics / Magnetohydrodynamics
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Microelectronics