Linear and nonlinear analysis of a gyrotron traveling wave amplifier with misaligned electron beam

Journal Article · Wed Nov 15 00:00:00 EST 2006 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2363176· OSTI ID:20860386

Chongqing, Jiao; Jirun, Luo ^[1]

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1. Institute of Electronics, Chinese Academy of Sciences, P.O. Box 2652, Beijing 100080 (China) and Graduate School of the Chinese Academy of Sciences, Beijing 100039 (China)

This paper presents linear and self-consistent nonlinear theories to describe the beam-wave interaction in a gyrotron traveling wave amplifier (gyro-TWA) with a misaligned electron beam. A linear theory based on the linearized Vlasov equations is developed by using Laplace transforms. By setting appropriate initial values of the electron guiding center, the nonlinear theory without misalignment can be used to study the misalignment effect. The two theories are in good agreement in the small-signal region for the gyro-TWA. The effects of beam misalignment on the TE{sub 01} mode gyro-TWA operating at the fundamental are discussed and the corresponding physical mechanism is analyzed.

• OSTI ID: 20860386
• Journal Information: Physics of Plasmas, Vol. 13, Issue 11; Other Information: DOI: 10.1063/1.2363176; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BOLTZMANN-VLASOV EQUATION
ELECTRON BEAMS
ELECTRONS
LAPLACE TRANSFORMATION
MICROWAVE AMPLIFIERS
NONLINEAR PROBLEMS
TRAVELLING WAVES
WAVEGUIDES