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Recent progress in the quantitative validation of JOREK simulations of ELMs in JET

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10.1088/1741-4326/aa6e2a
 
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hdl:2117/104779

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Pamela, S.J.P.
Huijsmans, G.T.A.
Eich, T.
Saarelma, Samuli
Lupelli, I.
Maggi, C.F.
Giroud, C.
Chapman, I.T.
Smith, S.F.
Frassinetti, L.
Becoulet, M.
Hoelzl, M.
Orain, F.
Futatani, S.
JET Contributors
Document typeArticle
Defense date2017-05-16
PublisherIOP Publishing
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
ProjectEUROfusion - Implementation of activities described in the Roadmap to Fusion during Horizon 2020 through a Joint programme of the members of the EUROfusion consortium (EC-H2020-633053)
Abstract
Future devices like JT-60SA, ITER and DEMO require quantitative predictions of pedestal density and temperature levels, as well as inter-ELM and ELM divertor heat fluxes, in order to improve global confinement capabilities while preventing divertor erosion/melting in the planning of future experiments. Such predictions can be obtained from dedicated pedestal models like EPED, and from non-linear MHD codes like JOREK, for which systematic validation against current experiments is necessary. In this paper, we show progress in the quantitative validation of the JOREK code using JET simulations. Results analyse the impact of diamagnetic terms on the dynamics and size of the ELMs, and evidence is provided that the onset of type-I ELMs is not governed by linear MHD stability alone, but that a nonlinear threshold could be responsible for large MHD events at the plasma edge.
CitationPamela, S.J.P. [et al.]. Recent progress in the quantitative validation of JOREK simulations of ELMs in JET. "Nuclear Fusion", 16 Maig 2017, vol. 57, núm. 7. 
URIhttp://hdl.handle.net/2117/104779
DOI10.1088/1741-4326/aa6e2a
ISSN0029-5515
Publisher versionhttp://iopscience.iop.org/article/10.1088/1741-4326/aa6e2a/meta
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