Publications related to Energetic ion dynamics and confinement in 3D saturated MHD configurations

Experimental demonstration of an up-down asymmetry effect on intrinsic rotation in the TCV tokamak

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

A new mechanism has recently been proposed that generates a radial flux of parallel momentum in toroidal plasmas. Namely, by considering up-down asymmetric flux surfaces, the symmetry following the magnetic field can be broken and an additional contributio ...

Institute of Physics2010

Global Nonlinear Electromagnetic Simulations of Tokamak Turbulence

Laurent Villard, Stephan Brunner, Trach-Minh Tran, Alberto Bottino, Sébastien Jolliet, Ben McMillan, Thibaut Vernay

The particle-in-cell code ORB5 is a global gyrokinetic turbulence simulation code in tokamak geometry. It has been developed at CRPP, Lausanne, Switzerland, with major contributions from IPP, Garching, Germany, and IPP, Greifswald, Germany, under a long-st ...

Institute of Electrical and Electronics Engineers2010

Measurement of the magnetic field errors on TCV

Jean-Marc Moret, Francesco Piras, Jonathan Rossel

A set of 24 saddle loops is used on the Tokamak à Configuration Variable (TCV) to measure the radial magnetic flux at different toroidal and vertical positions. The new system is calibrated together with the standard magnetic diagnostics on TCV. Based on t ...

Fusion Engineering and Design2010

A 3D multi-mode geometry-independent RMP optimization method and its application to TCV

Yves Martin, Jean-Marc Moret, Jonathan Rossel

Resonant magnetic perturbation (RMP) and error field correction (EFC) produced by toroidally and poloidally distributed coil systems can be optimized if each coil is powered with an independent power supply. A 3D multi-mode geometry-independent Lagrange me ...

IOP2010

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

Blob motion and control in simple magnetized plasmas

Ambrogio Fasoli, Ivo Furno, Paolo Ricci, Benoît Labit, Christian Gabriel Theiler, Nicola Vianello, Davoud Iraji

Intermittent convective transport caused by coherent structures, or blobs, are universally observed in the edge of laboratory plasmas. Besides being of fundamental physics interest, the dynamics of these structures in fusion reactors influence the density ...

2010

The Dependence of the Damping Rate of Medium-n Toroidal Alfvén Eigenmodes on the Edge Plasma Elongation in JET

Ambrogio Fasoli, Duccio Testa, Patrick Blanchard, Theodoros Panis, Nicolas Mellet

This paper reports the first quantitative analysis of the measurements of the damping rate (gamma/omega) for stable Alfvén Eigenmodes (AEs) with toroidal mode number (n) in the range |n|=3-15 as function of the edge plasma elongation (kappa95). We find tha ...

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

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

Hamiltonian approach to hybrid plasma models

Cesare Tronci

The Hamiltonian structures of several hybrid kinetic-fluid models are identified explicitly, upon considering collisionless Vlasov dynamics for the hot particles interacting with a bulk fluid. After presenting different pressure-coupling schemes for an ord ...

2010

Energetic ion dynamics and confinement in 3D saturated MHD configurations

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Experimental demonstration of an up-down asymmetry effect on intrinsic rotation in the TCV tokamak

Global Nonlinear Electromagnetic Simulations of Tokamak Turbulence

Measurement of the magnetic field errors on TCV

A 3D multi-mode geometry-independent RMP optimization method and its application to TCV

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

Blob motion and control in simple magnetized plasmas

The Dependence of the Damping Rate of Medium-n Toroidal Alfvén Eigenmodes on the Edge Plasma Elongation in JET

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

Gyrokinetic Simulations of Microturbulence in TCV Electron Internal Transport Barriers

Hamiltonian approach to hybrid plasma models

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

Measurement of the magnetic field errors on TCV

A 3D multi-mode geometry-independent RMP optimization method and its application to TCV

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

Hamiltonian approach to hybrid plasma models

Experimental demonstration of an up-down asymmetry effect on intrinsic rotation in the TCV tokamak

Global Nonlinear Electromagnetic Simulations of Tokamak Turbulence

Blob motion and control in simple magnetized plasmas

The Dependence of the Damping Rate of Medium-n Toroidal Alfvén Eigenmodes on the Edge Plasma Elongation in JET

Gyrokinetic Simulations of Microturbulence in TCV Electron Internal Transport Barriers