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Abstract

As solution to the problems of transient and steady state energy exhaust the type-III ELMy H-mode is proposed. In recent experiments at JET it has been demonstrated that with seeding of nitrogen a radiative power fraction of 95% can be achieved, reducing the steady state and transient heat flux to acceptable values. Though the confinement of these discharges is reduced as well. Nevertheless, the ITER operational domain for Q = 10 does foresee operation at confinement enhancement factors of H98(y,2) _ 0.78 at higher plasma currents (Ip = 17 MA). It has been demonstrated at JET that an integrated scenario with type-III ELMs is feasible.

Additional information

Authors: MATTHEWS G F, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);FELTON R, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);FUNDAMENSKI W, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);GIROUD C, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);MORGAN P, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);MULLANE M O, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);STAMP M, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);SARTORI R, EFDA Close Support Unit, Garching (DE);RAPP J, Institut für Plasmaphysik, Forschungszentrum Jülich, Association EURATOM/FZJ, Trilateral Euregio Cluster, Jülich (DE);HUBER A, Institut für Plasmaphysik, Forschungszentrum Jülich, Association EURATOM/FZJ, Trilateral Euregio Cluster, Jülich (DE);JACHMICH S, Institut für Plasmaphysik, Forschungszentrum Jülich, Association EURATOM/FZJ, Trilateral Euregio Cluster, Jülich (DE);KOSLOWSKI H R, Institut für Plasmaphysik, Forschungszentrum Jülich, Association EURATOM/FZJ, Trilateral Euregio Cluster, Jülich (DE);MONIER-GARBET P, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);CORRE Y, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);EICH T, Max-Planck-Institut für Plasmaphysik, IPP-EURATOM Association, Garching (DE)
Bibliographic Reference: An article published in: Journal of Nuclear Materials 337-339 (2005) 826-830
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://probe.usp.br/cgi-bin/sciserv.pl?collection=journals&journal=00223115
Record Number: 200518088 / Last updated on: 2005-04-19
Category: PUBLICATION
Original language: en
Available languages: en