Publications associées à Effect of the Parallel Current-Density on the Local Ideal 3-D Mhd Stability of the Helias Configuration

Bifurcated Helical Core Equilibrium States in Tokamaks

Olivier Sauter, Basil Duval, Stefano Coda, Jonathan Graves, Wilfred Anthony Cooper, Holger Reimerdes, Benoît Labit, Antoine Pochelon, David Pfefferlé, Federico David Halpern, Daniele Brunetti, Jonathan Rossel, Mattia Albergante

Tokamaks with weak to moderate reversed central shear in which the minimum rotational transform

q_{min}

is in the neighbourhood of unity can trigger bifurcated MagnetoHydrodynamic (MHD) equilibrium states, one of which is similar to a saturated ideal ...

2012

Equilibrium and stability in a heliotron with anisotropic hot particle slowing-down distribution

Jonathan Graves, Wilfred Anthony Cooper

The equilibrium and linear fluid Magnetohydrodynamic (MHD) stability in an inward-shifted large helical device heliotron configuration are investigated with the 3D ANIMEC and TERPSICHORE codes, respectively. A modified slowing-down distribution function is ...

American Institute of Physics2012

MHD properties in the core of ITER-like hybrid scenarios

Jonathan Graves, Wilfred Anthony Cooper, Federico David Halpern, Daniele Brunetti

MHD stability is studied in the frame of ITER like hybrid scenarios, characterized by weak reversed shear, with particular attention on ideal internal kink modes and infernal mode stability. Numerical simulations for ITER like equilibria, with hollow q pro ...

Iop Publishing Ltd2012

MHD equilibrium and stability of tokamaks and RFP systems with 3D helical cores

Olivier Sauter, Jonathan Graves, Wilfred Anthony Cooper

Bifurcated magnetohydrodynamic (MHD) equilibrium states are computed for ITER hybrid scenario and RFX-mod SHAx configurations with very flat or reversed core magnetic shear conditions. In the ITER studies, the minimum inverse rotational transform qmin is n ...

IOP Publishing2011

Pedestal Characteristics and MHD Stability of H-Mode Plasmas in TCV

Andreas Pitzschke

The tokamak à configuration variable (TCV) is unique in its ability to create a variety of plasma shapes and to heat the electron population in high density regimes using microwave power at the third harmonic of the electron cyclotron frequency. In the fra ...

EPFL2011

Measurement and modeling of three-dimensional equilibria in DIII-D

Holger Reimerdes

A detailed experiment-theory comparison reveals that linear ideal MHD theory is in quantitative agreement with external magnetic and internal soft x-ray measurements of the plasma response to externally applied non-axisymmetric fields over a broad range of ...

American Institute of Physics2011

The JET Alfven Eigenmode Local Manager for the real-time detection and tracking of a frequency-degenerate spectrum of MHD instabilities

Ambrogio Fasoli, Duccio Testa, Patrick Blanchard, Pierre Lavanchy, Theodoros Panis

We present the real-time VME system used to detect and track MHD instabilities, and particularly Alfven Eigenmodes, on the JET tokamak [J.Wesson, Tokamaks, 3rd ed., Oxford Science Publication, Oxford, 2003, p.617]. This system runs on a 1 kHz clock cycle, ...

Elsevier2011

KSTAR equilibrium operating space and projected stabilization at high normalized beta

Holger Reimerdes, Joo Yeon Kim, Ji Hyun Kim

Along with an expanded evaluation of the equilibrium operating space of the Korea Superconducting Tokamak Advanced Research, KSTAR, experimental equilibria of the most recent plasma discharges were reconstructed using the EFIT code. In near-circular plasma ...

2011

Diamagnetic thresholds for sawtooth cycling in tokamak plasmas

Federico David Halpern

The cycling dynamics of the internal kink mode, which drives sawtooth oscillations in tokamak plasmas, is studied using the three dimensional, non-linear magnetohydrodynamic (MHD) code XTOR-2F [H. Lütjens and J.-F. Luciani, J. Comput. Phys. 229, 8130 (2010 ...

American Institute of Physics2011

Direct two-dimensional measurements of the eld-aligned current associated with plasma blobs

Ambrogio Fasoli, Ivo Furno, Christian Gabriel Theiler, Nicola Vianello

In simple magnetized toroidal plasmas, field-aligned blobs originate from ideal interchange waves and propagate radially outward under the effect of

\grad B

and curvature induced

E \times B

drifts. We report on the first experimental two-dimensional me ...

2011

Effect of the Parallel Current-Density on the Local Ideal 3-D Mhd Stability of the Helias Configuration

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Bifurcated Helical Core Equilibrium States in Tokamaks

Equilibrium and stability in a heliotron with anisotropic hot particle slowing-down distribution

MHD properties in the core of ITER-like hybrid scenarios

MHD equilibrium and stability of tokamaks and RFP systems with 3D helical cores

Pedestal Characteristics and MHD Stability of H-Mode Plasmas in TCV

Measurement and modeling of three-dimensional equilibria in DIII-D

The JET Alfven Eigenmode Local Manager for the real-time detection and tracking of a frequency-degenerate spectrum of MHD instabilities

KSTAR equilibrium operating space and projected stabilization at high normalized beta

Diamagnetic thresholds for sawtooth cycling in tokamak plasmas

Direct two-dimensional measurements of the eld-aligned current associated with plasma blobs

MHD equilibrium and stability of tokamaks and RFP systems with 3D helical cores

Measurement and modeling of three-dimensional equilibria in DIII-D

Pedestal Characteristics and MHD Stability of H-Mode Plasmas in TCV

The JET Alfven Eigenmode Local Manager for the real-time detection and tracking of a frequency-degenerate spectrum of MHD instabilities

Equilibrium and stability in a heliotron with anisotropic hot particle slowing-down distribution

KSTAR equilibrium operating space and projected stabilization at high normalized beta

Diamagnetic thresholds for sawtooth cycling in tokamak plasmas

MHD properties in the core of ITER-like hybrid scenarios

Bifurcated Helical Core Equilibrium States in Tokamaks

Direct two-dimensional measurements of the eld-aligned current associated with plasma blobs