Modification and control of divertor detachment in Alcator C-Mod

被引：16

作者：

Lipschultz, B

Goetz, JA

LaBombard, B

McCracken, GM

Ohkawa, H

Takase, Y

Terry, JL

机构：

[1] Massachusetts Inst of Technology, Cambridge

来源：

JOURNAL OF NUCLEAR MATERIALS | 1997年 / 241卷

关键词：

Alcator C-Mod; improved confinement mode; detached plasma; impurity transport; divertor plasma;

D O I：

10.1016/S0022-3115(96)00604-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of adding different impurity gases and ICRF heating on divertor detachment has been compared for Ohmic, L-mode and high-q(parallel to) (greater than or equal to 300 MW/m(-2)), H-mode plasmas. The relative effect of all these external controls on divertor and core radiation is evaluated. Recycling gases (Ne and Ar) are found to primarily affect the main plasma as opposed to the divertor region. The lower Z non-recycling gases, N-2 and CD4 are more efficacious in this regard. N-2 was found effective in inducing detachment for high-q(parallel to), H-mode plasmas. An additional advantage of N-2 over the higher Z gases is that its injection resulted in the smallest degradation in H-mode energy confinement (similar to 10%).

引用

页码：771 / 776

页数：6

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