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F. Leuterer

Researcher at Max Planck Society

Publications -  195
Citations -  4044

F. Leuterer is an academic researcher from Max Planck Society. The author has contributed to research in topics: ASDEX Upgrade & Tokamak. The author has an hindex of 36, co-authored 193 publications receiving 3846 citations.

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Complete Suppression of Neoclassical Tearing Modes with Current Drive at the Electron-Cyclotron-Resonance Frequency in ASDEX Upgrade Tokamak

TL;DR: For the first time it has been shown experimentally that total stabilization of neoclassical tearing modes is possible with co-ECCD and the role of direct current drive as opposed to local heating is verified.
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Experiments on neoclassical tearing mode stabilization by ECCD in ASDEX Upgrade

TL;DR: In this paper, it was shown that with an averaged ECCD power of only 4-8% of the total heating power injected into the discharge, the island width can be reduced by 40%, provided that the center of deposition is very close to the resonant surface.
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The physics of neoclassical tearing modes and their stabilization by ECCD in ASDEX Upgrade

TL;DR: In this paper, an understanding of the physics of neoclassical tearing modes (NTMs) gained through experiments and modelling at ASDEX upgrade is presented. But the results are in good qualitative agreement with modelling using the Rutherford equation and in quantitative agreement with a two dimensional nonlinear cylindrical tearing mode code.
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Enhancement of the stabilization efficiency of a neoclassical magnetic island by modulated electron cyclotron current drive in the ASDEX upgrade tokamak.

TL;DR: The efficiency of generating a helical current in magnetic islands for the purpose of suppression of neoclassical tearing modes by electron cyclotron current drive is studied experimentally in the ASDEX Upgrade tokamak and it is found that the efficiency drops drastically as the width 2d of the co-ECCD driven current becomes larger than the island width W.
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Steady state advanced scenarios at ASDEX Upgrade

A. C. C. Sips, +145 more
TL;DR: In this paper, a modified divertor configuration for ASDEX upgrade, allowing operation at higher triangularity, and with a changed neutral beam injection (NBI) system, for a more tangential, off-axis beam deposition.