Publication

Linear and non-linear studies of spurious backward-wave instabilities in a smooth-wall gyrotron beam duct

Abstract

Recently developed self-consistent models for beam-wave interaction simulations of a gyrotron oscillator are used to study spurious backward-wave instabilities in smooth-wall metallic beam ducts. Starting from a simple case with a basic geometry, the influence of the beam duct geometry and the magnetic field profile on the instabilities threshold and on the quality of the electron beam are studied.

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