• Author: Stock, Andreas

    University of Stuttgart, Germany

  • Author: Neudorfer, Jonathan

    University of Stuttgart, Germany

  • Author: Riedlinger, Marc

    University of Stuttgart, Germany

  • Author: Pirrung, Georg

    Aeroelastic Design, Department of Wind Energy, Technical University of Denmark, Denmark

  • Author: Gassner, Gregor

    University of Stuttgart, Germany

  • Author: Schneider, Rudolf

    Karlsruhe Institute of Technology, Germany

  • Author: Roller, Sabine

    German Research School for Simulation Sciences GmbH (GRS), Germany

  • Author: Munz, Claus-Dieter

    University of Stuttgart, Germany

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Fast design codes for the simulation of the particle–field interaction in the interior of gyrotron resonators are available. They procure their rapidity by making strong physical simplifications and approximations, which are not known to be valid for many variations of the geometry and the operating setup. For the first time, we apply a fully electromagnetic (EM) transient 3-D high-order discontinuous Galerkin particle-in-cell method solving the complete self-consistent nonlinear Vlasov–Maxwell equations to simulate a 30-GHz high-power millimeter-wave gyrotron resonator without physical reductions. This is a computational expensive endeavor, which requires today's high-performance computing capacity. However, this enables a detailed analysis of the EM field, the excited TE2,3 mode, the frequencies, and the azimuthal particle bunching in the beam. Therefrom, we present new insights into the complex particle–field interaction of the electron cyclotron maser instability transferring kinetic energy from the electron beam to the EM field.

Original languageEnglish
JournalI E E E Transactions on Plasma Science
Publication date2012
Volume40
Issue7
Pages1860-1870
ISSN0093-3813
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 5

Keywords

  • Discontinuous Galerkin (DG), Electron cyclotron maser (ECM), Gyrotron resonator, High-order, Numerical plasma simulation, Particle-in-cell (PIC)
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