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Experimental study and interpretative modelling of the Power Exhaust in Configurations with Multiple X-Points in TCV

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Divertor heat load in ITER-like advanced tokamak scenarios on JET

Richard Pitts, Gilles Arnoux

Heat loads on the JET MarkIIHD divertor are measured by IR thermography in high triangularity plasmas with edge conditions of advanced tokamak scenarios (AT). AT scenarios operate at low density (n(e,av) < 5 x 10(19) m(-3) at JET) to maximise the non induc ...

Elsevier2009

3D Thermal and CFD Simulations of the Divertor Magnetic Coils for ITER

Jean-Marc Moret, René Chavan

Magnetic diagnostics for the new generation fusion reactor “ITER” are required to be extremely reliable since they provide measurements essential for reactor operation and protection, plasma control and for measurement of several parameters fundamental to ...

2007

Development of steady-state scenarios compatible with ITER-like wall conditions

Richard Pitts, Gilles Arnoux

A key issue for steady-state tokamak operation is to determine the edge conditions that are compatible both with good core confinement and with the power handling and plasma exhaust capabilities of the plasma facing components (PFCs) and divertor systems. ...

2007

Sheath heat transmission factors on TCV

Richard Pitts, Jan Horacek, Francisco Sanchez, János Márki

Despite its importance in determining the calculated surface power flux predicted, for example, by scrape-off layer simulation codes, the sheath heat transmission factor, gamma remains a quantity whose theoretically predicted value has rarely been tested e ...

2007

Spillover Benefits of Fusion Energy Programme

Edgard Gnansounou, Denis Bednyagin

This paper aims to develop a novel methodological approach to evaluation of long-term large-scale research, development, demonstration and deployment (RDDD) programs in energy sector. Following the postulates of “new” endogenous growth theory we propose to ...

2007

Bootstrap current compensation with electron-cyclotron waves in 3D reactor-size configurations

Sergi Ferrando I Margalet

In magnetic confinement devices, the inhomogeneity of the confining magnetic field along a magnetic field line generates the trapping of particles (with low ratio of parallel to perpendicular velocities) within local magnetic wells. One of the consequences ...

EPFL2006

Materials for fusion power reactors

Nadine Baluc

The present paper reviews the status of the knowledge on materials for fusion power plants, pointing out that they constitute one of the main key issues on the path to future reactors. Specific issues concerning plasma-facing materials, functional material ...

2006

A model of ELM filament energy evolution due to parallel losses

Richard Pitts

In this paper, two simplified models of edge localized mode (ELM) power exhaust are developed, one based on the kinetic and the other on the fluid treatment of parallel losses. These models are found to capture many (though not all) of the salient features ...

2006

Ideal MHD stability of tokamak plasmas with moderate and low aspect ratio

The need of durable and abundant energy sources for future ages stimulates the studies of thermonuclear energy sources, based on hot plasma confinement by magnetic fields. The most developed concept of hot plasma trap is the tokamak, where the plasma confi ...

EPFL2005

Simulating divertor detachment in the TCV and JET tokamaks

Marco Wischmeier

Divertor detachment is currently assumed to be a fundamental pre-requisite for the successful operation of future fusion reactors. Only by partially detaching the divertor in the regions of highest power flux density can high performance tokamak operation ...

EPFL2005