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Author(s):
N. Hayashi, T. Takizuka, N. Aibe, T. Ozeki, N. Oyama
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Title:
Integrated ELM Simulation with Edge MHD Stability and Transport of SOL-divertor Plasmas
Date of publication:
July 2007
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Key words:
ELM, MHD stability, SOL-divertor plasmas, integrated simulation
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Abstract:
The effect of the pressure profile on the energy loss caused by edge localized modes (ELMs) has been investigated by using an integrated simulation code TOPICS-IB based on a core transport code with a stability code for the peeling-ballooning modes and a transport model for scrape-off-layer and divertor plasmas. The steep pressure gradient inside the pedestal top is found to broaden the region of the ELM enhanced transport through the broadening of eigenfunctions and enhance the ELM energy loss. The ELM energy loss in the simulation becomes larger than 15 % of the pedestal energy, as is shown in the database of multi-machine experiments.
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