Wave-plasma coupling by measuring LH grill density in EAST

NUCLEAR FUSION AND PLASMA PHYSICS ›› 2013, Vol. 33 ›› Issue (3): 251-256.

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Wave-plasma coupling by measuring LH grill density in EAST

ZHANG Lei, DING Bo-jiang, WU Ze-ge, MA Wen-dong, LIU Liang, ZHU Wen-hua, LIU Fu-kun, SHAN Jia-fang

(Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031)

Received:2012-11-15 Revised:2013-01-31 Online:2013-09-15 Published:2013-09-13

EAST上基于端口密度测量的低杂波耦合研究

张磊，丁伯江，吴则革，马文东，刘亮，朱文华，刘甫坤，单家方

(中国科学院等离子体物理研究所，合肥 230031)

作者简介:张磊(1986-)，男，陕西西乡人，博士研究生，主要从事低杂波电流驱动实验研究。
基金资助:
国家磁约束核聚变能研究专项(2010GB105004)；国家自然科学基金资助项目(11175206，10928509，10875149)

Abstract

Abstract:

A triple Langmuir probe was installed at the top of the lower hybrid (LH) antenna in the experimental advanced superconducting tokamak (EAST). The probe system consists of a triple probe, a measurement circuit, data acquisition and data processing. The preliminary results show that injection of LH power increases the density in front of the LH grill. The relationship between grill densities and reflection coefficients (RCs) agrees with the theoretical prediction. The optimum density for LH coupling in EAST was measured, being in range of (4~5)×10¹⁷m^-3.

Key words: 低杂波, 探针, 端口密度, EAST装置

摘要：

介绍了一套安装在EAST装置低杂波天线端口上方，用来测量端口附近电子密度的Langmuir三探针系统及其初步实验结果。此探针系统由探针、测量电路、数据采集以及数据处理四部分构成。实验结果表明：在低杂波天线端口充气的条件下，低杂波注入后端口密度会有明显的增加。端口密度与反射系数的关系与理论趋势一致，EAST上低杂波耦合的最佳密度出现在4~5×10¹⁷m^-3。

关键词: 低杂波, 探针, 端口密度, EAST装置

CLC Number:

ZHANG Lei, DING Bo-jiang, WU Ze-ge, MA Wen-dong, LIU Liang, ZHU Wen-hua, LIU Fu-kun, SHAN Jia-fang. Wave-plasma coupling by measuring LH grill density in EAST[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2013, 33(3): 251-256.

张磊，丁伯江，吴则革，马文东，刘亮，朱文华，刘甫坤，单家方. EAST上基于端口密度测量的低杂波耦合研究[J]. 核聚变与等离子体物理, 2013, 33(3): 251-256.

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Wave-plasma coupling by measuring LH grill density in EAST

EAST上基于端口密度测量的低杂波耦合研究

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