ICRF Mode Conversion Flow Drive Experiments on Alcator C-Mod

被引：0
|
作者：
Lin, Y. [1 ]
Reinke, M. L. [1 ]
Rice, J. E. [1 ]
Wukitch, S. J. [1 ]
Granetz, R. [1 ]
Greenwald, M. [1 ]
Hubbard, A. E. [1 ]
Marmar, E. S. [1 ]
Podpaly, Y. A. [1 ]
Porkolab, M. [1 ]
Tsujii, N. [1 ]
Wolfe, S. [1 ]
机构：
[1] MIT Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA
来源：
RADIO FREQUENCY POWER IN PLASMAS: PROCEEDINGS OF THE 19TH TOPICAL CONFERENCE | 2011年 / 1406卷
关键词：
ICRF; flow drive; rotation; mode conversion; ion cyclotron; Alcator C-Mod; ION-CYCLOTRON; FREQUENCIES;
D O I：
10.1063/1.3664978
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：
We have carried out a detailed study of the dependence of ICRF mode conversion flow drive (MCFD) on plasma and RF parameters. The flow drive efficiency is found to depend strongly on the He-3 concentration in D(He-3) plasmas, a key parameter separating the ICRF minority heating regime and mode conversion regime. At +90 degrees antenna phasing (waves in the co-I-p direction) and dipole phasing, the driven flow is in the co-I-p direction, and the change of the rotation velocity increases with both P-RF and I-p, and scales unfavorably vs. plasma density and antenna frequency. When MCFD is applied to I-mode plasmas, the plasma rotation increases until the onset of MHD modes triggered by large sawtooth crashes. Very high performance I-mode plasmas with H-ITER98, (y2) similar to 1.4 and T(e)0 similar to 8 keV have been obtained in these experiments.
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页数：4
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