[Table of Contents]

Plasma and Fusion Research

Volume 6, 2403139 (2011)

Regular Articles

Simulation Study of ECCD in Helical Plasmas
Yohei MORIYA, Sadayoshi MURAKAMI and Kazunobu NAGASAKI1)
Department of Nuclear Engineering, Kyoto University, Kyoto 606-8501, Japan
1)
Institute of Advanced Energy, Kyoto University, Uji 611-0011, Japan
(Received 19 January 2011 / Accepted 28 July 2011 / Published 11 November 2011)

Abstract

The electron cyclotron current drive (ECCD) is studied in Heliotron J and LHD plasmas using GNET code in order to study the ECCD physics in helical configurations. The magnetic configuration dependence of ECCD is investigated in the Heliotron J plasma. It is found that the current direction is reversed in high bumpiness configuration compared with the other configurations. The ECCD in LHD is also investigated by changing electron cyclotron heating points fixing the configuration. It is found that the direction of the current reverses when we change the heating point from the ripple top to the ripple bottom.

Keywords

ECH, ECCD, helical system, Heliotron J, LHD, Fisch-Boozer effect, Ohkawa effect

DOI: 10.1585/pfr.6.2403139

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This paper may be cited as follows:

Yohei MORIYA, Sadayoshi MURAKAMI and Kazunobu NAGASAKI, Plasma Fusion Res. 6, 2403139 (2011).