Concept

Plasma propulsion engine

Publications associées (69)

DINA simulations of TCV electron cyclotron heating discharges

This paper reports on full tokamak discharge simulations in the TCV tokamak using the DINA code, of which a new open modular architecture version is presented. These new simulations include the effect of intense electron cyclotron heating, dissipated off-a ...

2003

Microwire arrays with plasmonic response at microwave frequencies

Olivier Martin

We study experimentally the response of three-dimensional arrays of microscopic wires. Very good agreement is found with previous theoretical work indicating that such a system can be considered as an effective plasmonic medium with a specific plasma frequ ...

2002

MHD characteristics in the high beta regime of the Large Helical Device

Wilfred Anthony Cooper, Kenji Tanaka

The highest volume averaged beta values beta (t) of 2.2% at B-t = 0.75 T (gas puff) and 2.4% at D-t = 1.3 T (pellet) in helical devices have been achieved in LHD. The beta (t) dependence of MHD activities has been investigated in NBI plasmas. The n/m = 1/2 ...

2001

Response of shielded cables to an external electromagnetic field excitation. Modeling and experimental validation

Michel Ianoz

Two methods for the calculation of internal responses of shielded cables submitted to an external impulse electromagnetic field are analyzed. One is the classical frequency-domain approach, the second is a new mixed frequency-time-domain model, which uses ...

1999

Experimental and theoretical stability limits of highly elongated tokamak plasmas

Olivier Sauter, Ivo Furno, Holger Reimerdes, Antoine Pochelon

Stability limits of highly elongated, D-shaped plasmas have been measured in the TCV (tokamak a configuration variable) tokamak. It is found that the plasma current is limited by kink-type disruptions, preceded by magnetohydrodynamic (MHD) mode activity. T ...

1998

Effect of plasma shape on confinement and MHD behaviour in TCV

Olivier Sauter, Basil Duval, Stefano Coda, Timothy Goodman, Yves Martin, Jean-Marc Moret, Stefano Alberti, Ivo Furno, Minh Quang Tran, Patrick Blanchard, Holger Reimerdes, Jean-Philippe Hogge, René Chavan, Damien Fasel, Xavier Llobet, Henri Weisen, Jonathan Bryan Lister, Richard Pitts, Antoine Pochelon, Roland Behn, Francis Troyon, Philippe Marmillod, Gilbert Tonetti, Albert Perez, Blaise Marlétaz, Pierre-François Isoz, Jean-Claude Magnin, Paolo Bosshard, Christian Deschenaux

The TCV tokamak (B-T < 1.5 T, R approximate to 0.88 m, a < 0.25 m) has produced a wide variety of plasma configurations, both diverted and limited, with elongations kappa(a), ranging from 0.9 to 2.58, triangularities delta(a) from -0.7 to 1 as well as disc ...

1997

Elm Control During Double-Null Ohmic H Modes in Tcv

Basil Duval, Yves Martin, Henri Weisen, Jonathan Bryan Lister, Richard Pitts, Antoine Pochelon

Precise control of the shape and position of double-null divertor configurations in the TCV tokamak has been used to trigger reliably the transition from ELM-free to ELMy ohmic H mode and back. Preprogrammed modulation of the magnetic axis height (+/- 1.25 ...

1995

The Properties of the Frequency Splitting of the Axisymmetrical Magnetoacoustic Wave and an Application to Current Profile Diagnosis

In the presence of finite plasma current, the axisymmetric (m = 0) magnetoacoustic wave resonance exhibits a frequency splitting for finite toroidal mode number (n not-equal 0) between oppositely directed traveling waves. Calculations are presented that de ...

1991

Ion-Cyclotron Modes in a Low-Density Plasma Cavity

Mark Sawley

Ion cyclotron modes excited in a low density, cylindrical plasma cavity using an external inductive antenna are investigated theoretically and experimentally. These modes, which have a long parallel wavelength, exhibit a strong electrostatic character and ...

1991

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