Effective excitation of ICRF waves by use of phased antennas in GAMMA 10

被引:1
作者
Yamaguchi, Y. [1 ]
Ichimura, M.
Higaki, H.
Fukuyama, A.
Hojo, H.
Nemoto, K.
Katano, M.
Muro, H.
Kozawa, I.
Cho, T.
机构
[1] Univ Tsukuba, Plasma Res Ctr, Tsukuba, Ibaraki 3058577, Japan
[2] Hiroshima Univ, Higashihiroshima 7398530, Japan
[3] Kyoto Univ, Dept Nucl Engn, Kyoto 6068501, Japan
关键词
D O I
10.13182/FST07-A1391
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
A numerical analysis is performed with two-dimensional wave code for effective excitation of the m = + 1 fast Alfven waves in an axisymmetric central cell of GAMMA 10. Plasma production with fast waves depends on the wave excitation in the plasma. Eigenmodes are strongly formed with large amplitude when the boundary conditions are satisfied As an optimum density for each eigenmode exists discretely, the density is clamped at the value where the eigenmode is strongly formed. For higher density plasma production, formation of eigenmodes should be controlled as the density increases. In this study, pairs of phased antennas are adopted for the effective excitation of eigenmodes. The optimum configuration of antennas and their phase difference are investigated in the present geometry. It is found that the eigenmodes can be effectively excited by controlling the phase difference between a pair of antennas.
引用
收藏
页码:328 / 330
页数:3
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