[Table of Contents]

Plasma and Fusion Research

Volume 7, 2403149 (2012)

Regular Articles

Stabilization Analysis of Neoclassical Tearing Mode in Fusion Plasmas
Daiki KURITA, Kozo YAMAZAKI, Hideki ARIMOTO, Tetsutarou OISHI and Tatsuo SHOJI
Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
(Received 9 December 2011 / Accepted 11 September 2012 / Published 22 November 2012)

Abstract

For the stabilization of neoclassical tearing mode (NTM), Electron Cyclotron Current Drive (ECCD) is used. The change of the EC control efficiency depends on EC modulation width and EC injection phase lag from the O-point of magnetic island. In this work, NTM stabilization by ECCD is analyzed using 1.5-dimensional transport code TOTAL, in which the time variation of magnetic island is described by the modified Rutherford equation. NTM in ITER can be stabilized when the EC phase lag is smaller than 10% and the EC modulation width is around 20%, when the time-averaged EC current and power is fixed.

Keywords

MHD stability control, neoclassical tearing mode, magnetic island, tokamak, ITER

DOI: 10.1585/pfr.7.2403149

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This paper may be cited as follows:

Daiki KURITA, Kozo YAMAZAKI, Hideki ARIMOTO, Tetsutarou OISHI and Tatsuo SHOJI, Plasma Fusion Res. 7, 2403149 (2012).