Evaluation of first wall heat fluxes due to magnetic perturbations for a range of ITER scenarios

P. Cahyna, L. Kripner, A. Loarte, G. Huijsmans, M. Peterka, R. Panek

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Abstract

The proposed use of magnetic perturbations for edge-localized mode (ELM) control in ITER poses a number of integration issues, among them the localized heat fluxes (footprints) on the plasma-facing components (PFCs). They may provide the benefit of spreading the heat flux, thus reducing its peak value, but they may cause a localized erosion of the PFCs. We present calculations of heat fluxes for a range of ITER plasma parameters. The efficiency of our method enables us to perform calculations for a range of assumptions on the SOL width and to optimize the coil configuration to yield the largest power flux spreading. The optimal coil configuration is not sensitive on SOL parameters and is also close to the one which is considered optimal for ELM control. The proximity of footprints may cause significant power loads on the upper wall.
Original languageEnglish
Pages (from-to)406-410
JournalJournal of Nuclear Materials
Volume463
DOIs
Publication statusPublished - Aug 2015

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