Concept

Flux tube

Related publications (93)

Anisotropic pressure bi-Maxwellian distribution function model for three-dimensional equilibria

A formulation of the anisotropic pressure magnetohydrodynamic equilibrium problem for three-dimensional plasmas with imposed nested magnetic surfaces is developed based on a bi-Maxwellian model of the distribution function for the energetic particle specie ...

2006

Measurement of edge electrostatic turbulence in the TCV tokamak plasma boundary

Jan Horacek

Almost since the first density profile measurements were made in the scrape-off layer (SOL) of the early tokamaks, it has been recognized that the rate of particle transport perpendicular to magnetic surfaces exceeds that expected on the basis of classical ...

EPFL2006

Influence of particle sources on electron density peaking in TCV and JET

Alexander Karpushov, Henri Weisen

Calculations of the particle flux caused by neutrals originating from the edge are performed for TCV and JET using the one-dimensional kinetic transport code Kn1D. The analysis, confirmed by experimental evidence, shows that for TCV and JET edge fuelling a ...

2006

Shear modulation experiments with ECCD on TCV

Timothy Goodman, Stefano Alberti, Roland Behn, Petri Nikkola

Anomalous electron transport is determined by turbulence, which in turn is affected by magnetic shear. A novel application of electron cyclotron current drive (ECCD), aiming at localized shear modulation, has been applied on the TCV tokamak for experiments ...

2006

ELMS and strike point jumps

Duccio Testa, Richard Pitts

If an ELM is a peeling of flux surfaces from the plasma, due to a broken separatrix, current density is lost as well as particles and energy. The fast loss of a current-carrying plasma layer modifies the plasma equilibrium, leading to sudden shifts in the ...

2005

A software package to manipulate space dependencies and geometry in magnetic confinement fusion

Jean-Marc Moret

Improvement in the performance of magnetic confinement devices for nuclear fusion relies on the optimization of the geometry of the plasma: either the two-dimensional (2D) cross-section shape in tokamaks with toroidal symmetry or the 3D magnetic configurat ...

2005

EDGE2D code simulations of SOL flows and in-out divertor asymmetries in JET

Richard Pitts

EDGE2D simulations show that high SOL flows can be generated when an additional radial convective transport is applied in the SOL and pedestal region along with a 'ballooning-like' poloidal variation in transport. This model produces an inward particle flu ...

2005

Rapid electron internal transport barrier formation during magnetic shear reversal in fully non-inductive TCV discharges

Olivier Sauter, Stefano Coda, Timothy Goodman, Antoine Pochelon, Yann Camenen, Emiliano Fable, Costanza Zucca, Petri Nikkola

The rapid formation of an electron internal transport barrier (eITB) is observed during a slow evolution (similar or equal to 200 ms) from a centrally peaked to a hollow current density profile, while all external actuators remain constant. The time consta ...

2005

Numerical modelling and AC losses of multifilamentary Bi-2223/Ag conductors with various geometry and filament arrangement

Bertrand Dutoit

This paper presents results from numerical modelling of non-twisted multifilamentary Bi-2223/Ag conductors with various geometry and filament arrangement. New anisotropic models of Jc(B) and n(B) have been employed in finite element method simulations unde ...

2003

Hysteresis Modelling of High Temperature Superconductors

Marten Sjöström

The present dissertation considers the capabilities, limitations and possible extensions of modelling the hysteresis that is exhibited by type-II superconductors, especially those with high critical temperature. Superconductors of type-II, including high t ...

2001

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