Concept

Dutch elm disease

Related publications (51)

Impact of fast vertical and radial plasma movement on type-1 ELMs in ASDEX upgrade

Yves Martin, Jonathan Bryan Lister, Sun Hee Kim

For the ITER project it is clear that steps have to be taken in order to avoid or mitigate type-I ELMs when operating in the standard H-mode scenario. Otherwise, divertor power loads induced by intrinsic ELMs will result in an intolerably short divertor li ...

2006

Third harmonic EC heating of ELMy H-mode in TCV

Yves Martin, Stefano Alberti, Laurie Porte

Ohmic H-mode discharges in the Tokamak Configuration Variable (TCV) have recently been heated for the first time by electron cyclotron (EC) waves at the 3rd harmonic (X3) at full power. New edge localized mode (ELM) behaviour has been found, with larger am ...

2006

SOLPS5 modelling of ELMing H-mode on TCV

Barbora Bruant Gulejová, Richard Pitts, Jan Horacek, Roland Behn, Marco Wischmeier, János Márki

Although ohmic H-modes have long been produced on the TCV tokamak and the effects of ELMs at the divertor targets studied in some detail [1], no attempt has yet been made to model the scrape-off layer (SOL) in these plasmas. This contribution describes det ...

2006

Survey of Type I ELM dynamics measurements

Richard Pitts

This report summarizes Type I edge localized mode (ELM) dynamics measurements from a number of tokamaks, including ASDEX-Upgrade, DIII-D, JET, JT-60U and MAST, with the goal of providing guidance and insight for the development of ELM simulation and modell ...

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

Far SOL ELM ion energies in JET

Richard Pitts

There is an increasing body of evidence that the energy lost from diverted tokamak plasmas due to edge localized mode (ELM) activity may not be confined solely to deposition on divertor components. Plasma-facing surfaces in the main confinement chamber als ...

2006

Edge localized modes control: experiment and theory

Yves Martin, Jonathan Bryan Lister

The paper reviews recent theoretical and experimental results focussing on the identification of the key factors controlling ELM energy and particle losses both in natural ELMs and in the presence of external controlling mechanisms. Present experiment and ...

2005

Local 3D perturbation experiments for probing the ELM stability

Yves Martin, Jonathan Bryan Lister

Empirical estimates indicate that the transient divertor power load induced by type-I ELMs in the standard H-mode ITER scenario might result in intolerably short target life times. Significant experimental effort has been put on the exploration of recipes ...

2005

Safe sites for tree regeneration in wooded pastures: A case of associational resistance?

Alexandre Buttler

Question: Are tree saplings in wooded pastures spatially associated with specific nurse structures or plants that facilitate tree sapling survival? Location: Wooded pastures in the Jura Mountains, Switzerland. Methods: In two sites, 73 kin apart, we sample ...

2005

Density peaking in low collisionality ELMy H-mode in JET

Olivier Sauter

Low collisionality, low particle source. ELMy H-modes (type-III) with sawteeth are produced in JET in order to address the question of density profile evolution in the reference q(95) = 3 ITER scenario. The paper focuses on particle transport in the core z ...

2004

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