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Abstract

Global and local edge parameters at the H-mode transition are investigated at edge densities below and near the H-mode density limit. Conditions for onset of edge magnetohydrodynamic instability and sustaining the H-mode define an operational window for H-mode with maximum edge density, which can only be reached with optimum adjustment for both heating and fuelling fluxes. Careful experiments are carried out to vary the edge density in a wide range and allow comparison with H-mode theories in various collisionality regimes.

Additional information

Authors: SUTTROP W, Max-Planck-Institut für Plasmaphysik, Garching (DE);PEETERS A G, Max-Planck-Institut für Plasmaphysik, Garching (DE);RYTER F, Max-Planck-Institut für Plasmaphysik, Garching (DE);STOBER J, Max-Planck-Institut für Plasmaphysik, Garching (DE);ASDEX UPGRADE TEAM, Max-Planck-Institut für Plasmaphysik, Garching (DE)
Bibliographic Reference: Article: Plasma Physics and Controlled Fusion, 41 (1999), 569-576
Record Number: 199910825 / Last updated on: 1999-06-07
Category: PUBLICATION
Original language: en
Available languages: en