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Abstract

Typical B-direction dependant asymmetries observed in the limiter and island SOL of W7-AS low-density ECRH discharges are shortly revieweed and explained in terms of classical drifts. While grad-\\b drifts are responsible for the up/down asymmetries of limiter load, E x B drifts associated with temperature inhomogenities in the plasma give rise to asymmetric plasma distributions in the limiter and island Sol. After a careful analysis of the transport implications of these drifts, simple 1D and 2D models have been defined, which reproduce consistently the experimental observations. The main results are confirmed by more rigorous treatment based on the 3D Monte Carlo transport code EMC3

Additional information

Authors: FENG Y, Max-Planck-Institut fur Plasmaphysik, Garching bei Munchen (DE);SARDEI F, Max-Planck-Institut fur Plasmaphysik, Garching bei Munchen (DE);GRIGULL P, Max-Planck-Institut fur Plasmaphysik, Garching bei Munchen (DE);HERRE G, Max-Planck-Institut fur Plasmaphysik, Garching bei Munchen (DE);W7-AS TEAM, Max-Planck-Institut fur Plasmaphysik, Garching bei Munchen (DE)
Bibliographic Reference: Article: Journal of Nuclear Materials, 266-269, (1999), 928-933
Record Number: 199910717 / Last updated on: 1999-05-14
Category: PUBLICATION
Original language: en
Available languages: en
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