The dimensionless scaling of ELMy H-mode confinement

Darren C. McDonald

doi:10.1016/j.crhy.2006.06.003

The dimensionless scaling of ELMy H-mode confinement
[Principe de similitude en mode H]

Darren C. McDonald ¹

¹ EURATOM–UKAEA Fusion Association, Culham Science Centre, Abingdon, OX14 3DB, UK

Comptes Rendus. Physique, Volume 7 (2006) no. 6, pp. 584-591.

Résumé
Abstract

Cet article décrit l'utilisation de lois d'échelles adimensionnelles pour l'étude du confinement de l'énergie dans les plasmas de tokamak en Mode-H et en présence de modes localisés de bord. Cette revue est centrée sur les expériences dédiées au principe de similitude, et représente le résultat d'une collaboration internationale très active sur le sujet. Les expériences sur tokamak ont montré la validité d'un principe de similitude appliquée aux plasmas magnétisés. Elles ont aussi fourni des réponses aux questions portant sur les lois d'échelle de longueur de corrélation de la turbulence, la nature électrostatique ou électromagnétique des fluctuations, et les effets des collisions sur le transport. Ces études ont abouti à une loi d'échelle qui a permis de dimensionner la prochaine génération de machines, dont ITER, et suggèrent la possibilité d'atteindre des régimes de plasmas à forte pression avec un bon confinement.

This article describes the use of dimensionless analysis in the study of energy confinement in ELMy H-mode tokamak plasmas, with a focus on the use of dedicated dimensionless parameter experiments. This work has involved a strong collaboration between many machines and countries. The experiments have demonstrated that such analysis is indeed valid, and have given important information on the scaling of the characteristic turbulent length, the separation of electrostatic and electromagnetic transport regimes, and the effects of collisionality on plasma transport. They have also provided a method for scaling existing experiments to next step machines, such as ITER, and have suggested the possibility of enhanced performance at high normalised pressure.

Publié le : 2006-07-01

DOI : 10.1016/j.crhy.2006.06.003

Keywords: Tokamak plasmas, ELMy H-mode
Mot clés : Plasmas de tokamak, Mode-H

Affiliations des auteurs :

Darren C. McDonald ¹

¹ EURATOM–UKAEA Fusion Association, Culham Science Centre, Abingdon, OX14 3DB, UK

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     title = {The dimensionless scaling of {ELMy} {H-mode} confinement},
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     doi = {10.1016/j.crhy.2006.06.003},
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Darren C. McDonald. The dimensionless scaling of ELMy H-mode confinement. Comptes Rendus. Physique, Volume 7 (2006) no. 6, pp. 584-591. doi : 10.1016/j.crhy.2006.06.003. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2006.06.003/

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