Strike-point splitting induced by external magnetic perturbations: Observations on JET and MAST and associated modelling

E. Nardon; P. Cahyna; S. Devaux; A. Kirk; A. Alfier; E. De La Luna; G. De Temmerman; P. Denner; T. Eich; T. Gerbaud; D. Harting; S. Jachmich; H. R. Koslowski; Y. Liang; Y. Sun

doi:10.1016/j.jnucmat.2010.10.072

Strike-point splitting induced by external magnetic perturbations: Observations on JET and MAST and associated modelling

E. Nardon
, P. Cahyna
, S. Devaux
, A. Kirk
, A. Alfier
, E. De La Luna
, G. De Temmerman
, P. Denner
, T. Eich
, T. Gerbaud
, D. Harting
, S. Jachmich
, H. R. Koslowski
, Y. Liang
, Y. Sun

Laboratory for Plasma Physics

Commissariat à l'Énergie Atomique (CEA)
Institute of Plasma Physics, Academy of Sciences of the Czech Republic
Max-Planck-Institut für Plasmaphysik
Culham Centre for Fusion Energy
Associazione EURATOM-ENEA sulla Fusione
Laboratorio Nacional de Fusión
FOM-Instituut voor Plasmafysica 'Rijnhuizen'
Ecole Polytechnique
Forschungszentrum Jülich GmbH

Research output: Contribution to journal › Article › peer-review

48 Citations (Scopus)

Abstract

Heat flux deposition profiles, calculated from infrared imaging, are presented for JET and MAST cases in the presence of external magnetic perturbations. In L-mode, a clear splitting of the strike-point is observed and well reproduced by modelling based on field line tracing with no plasma magnetic response included (vacuum field approximation). In H-mode, in contrast, the splitting is not clearly observed in spite of being expected from vacuum field modelling. As illustrated by modelling results, screening effects could explain the absence of a clear splitting in H-mode.

Original language	English
Pages (from-to)	S914-S917
Journal	Journal of Nuclear Materials
Volume	415
Issue number	1 SUPPL
DOIs	https://doi.org/10.1016/j.jnucmat.2010.10.072
Publication status	Published - 1 Aug 2011

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10.1016/j.jnucmat.2010.10.072

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Nardon, E., Cahyna, P., Devaux, S., Kirk, A., Alfier, A., De La Luna, E., De Temmerman, G., Denner, P., Eich, T., Gerbaud, T., Harting, D., Jachmich, S., Koslowski, H. R., Liang, Y., & Sun, Y. (2011). Strike-point splitting induced by external magnetic perturbations: Observations on JET and MAST and associated modelling. Journal of Nuclear Materials, 415(1 SUPPL), S914-S917. https://doi.org/10.1016/j.jnucmat.2010.10.072

@article{998bf7bbdf8a4e1292e4192a44cb7ba3,

title = "Strike-point splitting induced by external magnetic perturbations: Observations on JET and MAST and associated modelling",

abstract = "Heat flux deposition profiles, calculated from infrared imaging, are presented for JET and MAST cases in the presence of external magnetic perturbations. In L-mode, a clear splitting of the strike-point is observed and well reproduced by modelling based on field line tracing with no plasma magnetic response included (vacuum field approximation). In H-mode, in contrast, the splitting is not clearly observed in spite of being expected from vacuum field modelling. As illustrated by modelling results, screening effects could explain the absence of a clear splitting in H-mode.",

author = "E. Nardon and P. Cahyna and S. Devaux and A. Kirk and A. Alfier and \{De La Luna\}, E. and \{De Temmerman\}, G. and P. Denner and T. Eich and T. Gerbaud and D. Harting and S. Jachmich and Koslowski, \{H. R.\} and Y. Liang and Y. Sun",

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language = "English",

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Nardon, E, Cahyna, P, Devaux, S, Kirk, A, Alfier, A, De La Luna, E, De Temmerman, G, Denner, P, Eich, T, Gerbaud, T, Harting, D, Jachmich, S, Koslowski, HR, Liang, Y & Sun, Y 2011, 'Strike-point splitting induced by external magnetic perturbations: Observations on JET and MAST and associated modelling', Journal of Nuclear Materials, vol. 415, no. 1 SUPPL, pp. S914-S917. https://doi.org/10.1016/j.jnucmat.2010.10.072

TY - JOUR

T1 - Strike-point splitting induced by external magnetic perturbations

T2 - Observations on JET and MAST and associated modelling

AU - Nardon, E.

AU - Cahyna, P.

AU - Devaux, S.

AU - Kirk, A.

AU - Alfier, A.

AU - De La Luna, E.

AU - De Temmerman, G.

AU - Denner, P.

AU - Eich, T.

AU - Gerbaud, T.

AU - Harting, D.

AU - Jachmich, S.

AU - Koslowski, H. R.

AU - Liang, Y.

AU - Sun, Y.

PY - 2011/8/1

Y1 - 2011/8/1

N2 - Heat flux deposition profiles, calculated from infrared imaging, are presented for JET and MAST cases in the presence of external magnetic perturbations. In L-mode, a clear splitting of the strike-point is observed and well reproduced by modelling based on field line tracing with no plasma magnetic response included (vacuum field approximation). In H-mode, in contrast, the splitting is not clearly observed in spite of being expected from vacuum field modelling. As illustrated by modelling results, screening effects could explain the absence of a clear splitting in H-mode.

AB - Heat flux deposition profiles, calculated from infrared imaging, are presented for JET and MAST cases in the presence of external magnetic perturbations. In L-mode, a clear splitting of the strike-point is observed and well reproduced by modelling based on field line tracing with no plasma magnetic response included (vacuum field approximation). In H-mode, in contrast, the splitting is not clearly observed in spite of being expected from vacuum field modelling. As illustrated by modelling results, screening effects could explain the absence of a clear splitting in H-mode.

UR - https://www.scopus.com/pages/publications/80054840628

U2 - 10.1016/j.jnucmat.2010.10.072

DO - 10.1016/j.jnucmat.2010.10.072

M3 - Article

AN - SCOPUS:80054840628

SN - 0022-3115

VL - 415

SP - S914-S917

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1 SUPPL

ER -

Strike-point splitting induced by external magnetic perturbations: Observations on JET and MAST and associated modelling

Abstract

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