Benchmarking of the Gyrokinetic Microstability Codes GENE, GS2, and GYRO over a Range of Plasma Parameters

POSTER

Abstract

Comparing results from different gyrokinetic codes as a means of verification (benchmarking) is only convincing if the codes agree over a wide range of plasma conditions. Otherwise, agreement may simply be fortuitous. We present here linear and nonlinear comparisons of the Eulerian codes GENE, GS2, and GYRO for a variety of discharges and radii. These include the outer regions of DIII-D discharges with localized electron-cyclotron heating applied at different locations, the steep-gradient region of an EAST H-mode pedestal, a high poloidal beta DIII-D discharge with reversed magnetic shear in the core, and well-matched DIII-D discharges with varying degrees of toroidal rotation.

Authors

  • Ronald Bravenec

    Fourth State Research

  • Tobias Goerler

    Max Planck Institute for Plasma Physics

  • Daniel Told

    Max Planck Institute for Plasma Physics

  • Frank Jenko

    Max-Planck-Institut f{\"u}r Plasmaphysik, Boltzmannstr. 2, 85748 Garching, Germany, Max Planck Institute for Plasma Physics

  • M.J. Pueschel

    University of Wisconsin, Madison, University of Wisconsin-Madison, Univ. Wisconsin, Madison

  • G.R. McKee

    U. of Wisconsin-Madison, U. Wisc., Univ. Wisconsin, Madison, U. Wisc-Madison, U. Wisc, U. Wisc.-Madison

  • Jeff Candy

    General Atomics

  • A.M. Garofalo

    General Atomics, GA

  • S.P. Smith

    General Atomics, GA

  • G.M. Staebler

    General Atomics, GA

  • Michael Barnes

    Oxford University

  • Christopher Holland

    UC San Diego, UCSD, Center for Energy Research, University of California, San Diego, Univ. California, San Diego, University of California - San Diego

  • S. Ding

    Institute of Plasma Physics, Chinese Academy of Sciences, IPP-Hefei, CN

  • T.L. Rhodes

    UCLA, Univ. California, Los Angeles