Orbital aspects of reachable beta value in NBI heated heliotron/torsatrons

被引：9

作者：

Murakami, S

Nakajima, N

Okamura, S

Okamoto, M

机构：

[1] Natl Inst for Fusion Science, Nagoya

来源：

NUCLEAR FUSION | 1996年 / 36卷 / 03期

关键词：

D O I：

10.1088/0029-5515/36/3/I08

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

By modelling the typical orbital deviation and the deposition profile of tangentially injected neutral beams, the heating efficiency is derived in heliotron/torsatrons. It is found that the changes of the configuration due to finite beta effects alter the NBI heating efficiency greatly and that the magnetic well or hill condition, which is important for the MHD stabilities, is also an important factor in determining the heating efficiency in a weak magnetic field. By combining the energy confinement scaling law with the heating efficiency, the reachable beta value is evaluated and it is found that there is an optimum value of the magnetic field strength for obtaining a high plasma beta from the point of view of the NBI heating efficiency.

引用

页码：359 / 365

页数：7

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