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Three-dimensional full-wave propagation code for cold plasma

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Alfven mode stability and wave-particle interaction in the JET tokamak: prospects for scenario development and control schemes in burning plasma experiments

Ambrogio Fasoli, Duccio Testa

We have investigated the effect of different ion cyclotron resonance frequency (ICRF) heating schemes, of error field modes, of the plasma shape and edge magnetic shear, and of the ion delB drift direction on the stability of Alfven eigenmodes (AEs). The u ...

2004

Recent advances in the LHD experiment

Wilfred Anthony Cooper, Terunobu Akiyama, Kenji Tanaka

In the first four years of the LHD experiment, several encouraging results have emerged, the most significant of which is that MHD stability and good transport are compatible in the inward shifted axis configuration. The observed energy confinement at this ...

2003

Experiments are conducted on the JET tokamak to demonstrate the diagnostic potential of Magneto-Hydro-Dynamics (MHD) spectroscopy, for the plasma bulk and its suprathennal components, using Alfven eigenmodes (AEs) excited by external antennas and by energe ...

2002

Modelling of electron transport and of sawtooth activity in tokamaks

Transport phenomena in tokamak plasmas strongly limit the particle and energy confinement and represent a crucial obstacle to controlled thermonuclear fusion. Within the vast framework of transport studies, three topics have been tackled in the present the ...

EPFL2001

A particular configuration of the LHD stellarator with an unusually flat pressure profile has been chosen to be a test case for comparison of the MHD stability property predictions of different three-dimensional and averaged codes for the purpose of code c ...

1996

Nonlocal analyses of electrostatic and electromagnetic waves in hot, magnetized, nonuniform, bounded plasmas

Olivier Sauter

Heating of tokamak plasmas up to temperatures of the order of 10 keV (≈ 108 0K) is one of the main subjects in plasma physics research. Much experimental and theoretical effort has been devoted to the improvement of the heating efficiency and to the unders ...

EPFL1992

Chauffage par absorption résonnante d'ondes d'Alfvèn sur le plasma d'un thêta pinch

Antoine Pochelon

The concept of (shear) Alfvèn wave resonant absorption for heating a plasma has been demonstrated on a theta pinch. The m = 1 mode is excited by means of a helical launching structure with a given wave length, at different frequencies. When the frequency i ...

EPFL1977