Publications related to Quasi-two-dimensional waves in three-dimensional magnetic confinement systems

Experimental Evidence of Momentum Transport Induced by an Up-Down Asymmetric Magnetic Equilibrium in Toroidal Plasmas

Olivier Sauter, Basil Duval, Alexander Karpushov, Yann Camenen, Alessandro Bortolon, Lucia Isabel Federspiel, Francesco Piras

The first experimental evidence of parallel momentum transport generated by the up-down asymmetry of a toroidal plasma is reported. The experiments, conducted in the Tokamak a` Configuration Variable, were motivated by the recent theoretical discovery of i ...

2010

Sheath boundary conditions for plasma fluid models

Ambrogio Fasoli, Ivo Furno, Paolo Ricci, Christian Gabriel Theiler, Joaquim Loizu Cisquella

A new definition of the sheath edge is rigorously derived taking into account the kinetic properties of the plasma, and a consistent set of local sheath edge conditions is presented for the case of a magnetic field perpendicular to the wall. These local bo ...

2010

Drift stabilization of ballooning modes in a high-$\langle \beta \rangle$ LHD configuration

Jonathan Graves, Wilfred Anthony Cooper, Lucie Brocher

Ideal MHD yields at best inconclusive predictions about the stability of the LHD heliotron for

\langle \beta \rangle \geq 3\%

. We investigate the impact of the drift stabilization of ballooning modes for the inward shifted LHD configuration (vacuum magne ...

2010

A new sawtooth control mechanism relying on toroidally propagating ion cyclotron resonance frequency waves: Theory and Joint European Torus tokamak experimental evidence

Stefano Coda, Jonathan Graves

The sawtooth control mechanism in plasmas employing toroidally propagating ion cyclotron resonance waves is extended. The asymmetrically distributed energetic passing ions are shown to modify the ideal internal kink mode when the position of the minority i ...

APS2010

A new sawtooth control mechanism relying on toroidally propagating ion cyclotron resonance frequency waves: Theory and Joint European Torus tokamak experimental evidence

Stefano Coda, Jonathan Graves

The sawtooth control mechanism in plasmas employing toroidally propagating ion cyclotron resonance waves is extended. The asymmetrically distributed energetic passing ions are shown to modify the ideal internal kink mode when the position of the minority i ...

2010

Gyrokinetic Simulations of Microturbulence in TCV Electron Internal Transport Barriers

Olivier Sauter, Laurent Villard, Stephan Brunner, Xavier Lapillonne

Using the Eulerian code GENE [1], gyrokinetic simulations of microturbulence were carried out under conditions relevant to electron-Internal Transport Barriers (eITB) in the TCV tokmak [2], generated under conditions of low or negative shear. For typical d ...

2010

Plasma rotation and momentum transport studies in the TCV tokamak based on charge exchange spectroscopy measurements

Alessandro Bortolon

Thermonuclear controlled fusion research is a highly active branch of plasma physics. The main goal is the production of energy from the fusion reaction of hydrogen isotope nuclei, the same reaction that powers stars. The most promising present approach ar ...

EPFL2009

Clarifications to the limitations of the s-alpha equilibrium model for gyrokinetic computations of turbulence

Laurent Villard, Stephan Brunner, Sébastien Jolliet, Xavier Lapillonne, Alessandro Marinoni

In the context of gyrokinetic flux-tube simulations of microturbulence in magnetized toroidal plasmas, different treatments of the magnetic equilibrium are examined. Considering the Cyclone DIII-D base case parameter set [Dimits et al., Phys. Plasmas 7, 96 ...

American Institute of Physics2009

Snowflake Divertor Plasmas on TCV

Olivier Sauter, Basil Duval, Stefano Coda, Yves Martin, Jean-Marc Moret, Ivo Furno, Benoît Labit, Federico Alberto Alfredo Felici, Richard Pitts, Antoine Pochelon, Costanza Zucca, Dávid Wágner, Francesco Piras, János Márki, Andreas Pitzschke, Attila Bencze

Starting from a standard single null X-point configuration, a second order null divertor (snowflake (SF)) has been successfully created on the Tokamak a Configuration Variable (TCV) tokamak. The magnetic properties of this innovative configuration have bee ...

EPS2009

Sawtooth-Control Mechanism using Toroidally Propagating Ion-Cyclotron-ResonanceWaves in Tokamaks

Stefano Coda, Jonathan Graves

The sawtooth control mechanism in plasmas employing off-axis toroidally propagating ion cyclotron resonance waves in tokamaks is reinvestigated. The radial drift excursion of energetic passing ions distributed asymmetrically in the velocity parallel to the ...

American Physical Society2009

Quasi-two-dimensional waves in three-dimensional magnetic confinement systems

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Experimental Evidence of Momentum Transport Induced by an Up-Down Asymmetric Magnetic Equilibrium in Toroidal Plasmas

Sheath boundary conditions for plasma fluid models

Drift stabilization of ballooning modes in a high-$\langle \beta \rangle$ LHD configuration

A new sawtooth control mechanism relying on toroidally propagating ion cyclotron resonance frequency waves: Theory and Joint European Torus tokamak experimental evidence

A new sawtooth control mechanism relying on toroidally propagating ion cyclotron resonance frequency waves: Theory and Joint European Torus tokamak experimental evidence

Gyrokinetic Simulations of Microturbulence in TCV Electron Internal Transport Barriers

Plasma rotation and momentum transport studies in the TCV tokamak based on charge exchange spectroscopy measurements

Clarifications to the limitations of the s-alpha equilibrium model for gyrokinetic computations of turbulence

Snowflake Divertor Plasmas on TCV

Sawtooth-Control Mechanism using Toroidally Propagating Ion-Cyclotron-ResonanceWaves in Tokamaks

Plasma rotation and momentum transport studies in the TCV tokamak based on charge exchange spectroscopy measurements

Sheath boundary conditions for plasma fluid models

Drift stabilization of ballooning modes in a high-$\langle \beta \rangle$ LHD configuration

A new sawtooth control mechanism relying on toroidally propagating ion cyclotron resonance frequency waves: Theory and Joint European Torus tokamak experimental evidence

A new sawtooth control mechanism relying on toroidally propagating ion cyclotron resonance frequency waves: Theory and Joint European Torus tokamak experimental evidence

Gyrokinetic Simulations of Microturbulence in TCV Electron Internal Transport Barriers

Clarifications to the limitations of the s-alpha equilibrium model for gyrokinetic computations of turbulence

Snowflake Divertor Plasmas on TCV

Sawtooth-Control Mechanism using Toroidally Propagating Ion-Cyclotron-ResonanceWaves in Tokamaks

Experimental Evidence of Momentum Transport Induced by an Up-Down Asymmetric Magnetic Equilibrium in Toroidal Plasmas