Coupled ion temperature gradient and trapped electron mode to electron temperature gradient mode gyrokinetic simulations
نویسندگان
چکیده
منابع مشابه
Gyrokinetic Particle-In-Cell Global Simulations of Ion-Temperature-Gradient and Collisionless-Trapped- Electron-Mode Turbulence in Tokamaks
The goal of thermonuclear fusion research is to provide power plants, that will be able to produce one gigawatt of electricity. Among the different ways to achieve fusion, the tokamak, based on magnetic confinement, is the most promising one. A gas is heated up to hundreds of millions of degrees and becomes a plasma, which is maintained or confined in a toroidal vessel by helical magnetic field...
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Global gyrokinetic simulations of ion temperature gradient (ITG) driven turbulence in an ideal MHD ITER equilibrium plasma are performed with the ORB5 code. The noise control and field-aligned Fourier filtering procedures implemented in ORB5 are essential in obtaining numerically healthy results with a reasonable amount of computational effort: typical simulations require 109 grid points, 109 p...
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We examine the convergence of particle-based nonlinear \gyrokinetic simulations" of ion-temperature-gradient (ITG) turbulence [1] with respect to numerical parameters. Our main focus is on convergence with respect to particle number, both through direct particle number scans and through \scrambling tests" that determine the relative e ect of the noise due to particle discreteness. Results will ...
متن کاملElectron temperature gradient turbulence.
The first toroidal, gyrokinetic, electromagnetic simulations of small scale plasma turbulence are presented. The turbulence considered is driven by gradients in the electron temperature. It is found that electron temperature gradient (ETG) turbulence can induce experimentally relevant thermal losses in magnetic confinement fusion devices. For typical tokamak parameters, the transport is essenti...
متن کاملElectron temperature gradient driven turbulence*
Collisionless electron-temperature-gradient-driven ~ETG! turbulence in toroidal geometry is studied via nonlinear numerical simulations. To this aim, two massively parallel, fully gyrokinetic Vlasov codes are used, both including electromagnetic effects. Somewhat surprisingly, and unlike in the analogous case of ion-temperature-gradient-driven ~ITG! turbulence, we find that the turbulent electr...
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ژورنال
عنوان ژورنال: Physics of Plasmas
سال: 2007
ISSN: 1070-664X,1089-7674
DOI: 10.1063/1.2436851