Work

A model of electron beam neutralization for gyrotron simulations

Year: 2024

Type: article

Abstract: A numerical model is presented to describe the electron beam neutralization during long-pulse and continuous-wave operation in gyrotrons. This model has been implemented in the electrostatic, self-consistent electron optics code Ariadne. Using this model, the electron beam parameters in the cavity could be determined as a function of the level of neutralization. The electron beam was shown to be partially neutralized in the cavity, and the effect of neutralization on the beam properties was investigated for a cylindrical gyrotron. This study was extended to a coaxial cavity gyrotron, identifying two ion trapping regimes, which only had a minor impact on the beam parameters.

Source: Physics of Plasmas

DOI: 10.1063/5.0202187

Authors: Leif Sieben, Ioannis Gr. Pagonakis, Jérémy Genoud, Jean-Philippe Hogge, Alexander B. Barnes

Institutions: ETH Zurich, École Polytechnique Fédérale de Lausanne

Language: English

Topic: Gyrotron and Vacuum Electronics Research

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

Award: G4806986705