Measurement of turbulence propagation velocity using Doppler reflectometer on HL-2A tokamak

被引：0
|
作者：
Xiao Weiwen [1 ]
Ding Xuantong [1 ]
Liu Zetian [1 ]
Yao Lianghua [1 ]
Sun Hongjuan [1 ]
Duan Xuru [1 ]
Yan Longwen [1 ]
Yang Qingwei [1 ]
机构：
[1] SW Inst Phys, Chengdu 610041, Peoples R China
来源：
PLASMA SCIENCE & TECHNOLOGY | 2008年 / 10卷 / 04期
关键词：
Doppler reflectometer; turbulence propagation velocity; cutoff density;
D O I：
暂无
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：
O-mode Doppler reflectometer has been successfully developed as an important diagnostic system on HL-2A. It can be used to measure the turbulence propagation in both plasma edge and confinement zone. The Doppler reflectometer system consists of two fixed frequency homodyne receivers: 15 GHz (corresponding to cutoff density of 0.3 x 10(19) m(-3)) and 33 GHz (corresponding to cutoff density of 1.35 x 10(19) m(-3)). The Doppler reflectometry principle and the experimental arrangements on HL-2A are presented. Meanwhile, the experimental Doppler reflectometric spectra under different discharge conditions, with and without ECRH, were obtained. Furthermore, the turbulence propagation velocity change and the pro. le were also observed in different discharge conditions.
引用
收藏
页码：403 / 406
页数：4
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