Modeling of divertor particle and heat loads during application of resonant magnetic perturbation fields for ELM control in ITER

0395783 - ÚFP 2014 RIV NL eng J - Článek v odborném periodiku
Schmitz, O. - Bécoulet, M. - Cahyna, Pavel - Evans, T.E. - Feng, Y. - Frerichs, H. - Kirschner, A. - Kukushkin, A. - Laengner, R. - Lunt, T. - Loarte, A. - Pitts, R. - Reiser, D. - Reiter, D. - Saibene, G. - Samm, U.
Modeling of divertor particle and heat loads during application of resonant magnetic perturbation fields for ELM control in ITER.
Journal of Nuclear Materials. Roč. 438, suppl (2013), S194-S198. ISSN 0022-3115. E-ISSN 1873-4820.
[International Conference on Plasma-Surface Interactions in Controlled Fusion Devices/20./. Aachen, 21.05.2012-25.05.2012]
Grant CEP: GA ČR GAP205/11/2341
Institucionální podpora: RVO:61389021
Klíčová slova: Plasma properties * Plasma-Materials Interaction
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
Impakt faktor: 2.016, rok: 2013
http://www.sciencedirect.com/science/article/pii/S0022311513000330

First results from three-dimensional modeling of the divertor heat and particle flux pattern during application of resonant magnetic perturbation fields as ELM control scheme in ITER with the EMC3-Eirene fluid plasma and kinetic neutral transport code are discussed. The formation of a helical magnetic footprint breaks the toroidal symmetry of the heat and particle fluxes. Expansion of the flux pattern as far as 60 cm away from the unperturbed strike line is seen with vacuum RMP fields, resulting in a preferable heat flux spreading.Inclusion of plasma response reduces the radial extension of the heat and particle fluxes and results in a heat flux peaking closer to the unperturbed level.A strong reduction of the particle confinement is found.3D flow channels are identified as a consistent reason due to direct parallel outflow from inside of the separatrix. Their radial inward expansion and hence the level of particle pump out is shown to be dependent on the perturbation level.
Trvalý link: http://hdl.handle.net/11104/0223697