Development of signal analysis method for the motional Stark effect diagnostic on EAST

被引：4

作者：

Fu, Jia ^{[1
]}

Lyu, Bo ^{[1
]}

Liu, Haiqing ^{[1
]}

Li, Yingying ^{[1
]}

Liu, Dongmei ^{[2
]}

Wei, Yongqing ^{[2
]}

Fan, Chao ^{[1
]}

Shi, Yuejiang ^{[3
]}

Wu, Zhenwei ^{[1
]}

Wan, Baonian ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China

[2] HeFei Univ Technol, Hefei 230009, Anhui, Peoples R China

[3] Seoul Natl Univ, Dept Nucl Engn, Seoul 08826, South Korea

来源：

PLASMA SCIENCE & TECHNOLOGY | 2017年 / 19卷 / 10期

基金：

中国国家自然科学基金;

关键词：

motional Stark effect; fast Fourier transform;

D O I：

10.1088/2058-6272/aa7941

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：

A pilot single-channel Motional Stark Effect (MSE) diagnostic has been developed on EAST since 2015. The dual photo-elastic modulators (PEM) were employed to encode the polarization angle into a time-varying signal. The pitch angle was related to the ratio of modulation amplitude at the second harmonic frequency. A digital harmonic analyzer (DHA) technique was developed for extracting the second harmonic amplitude. The results were validated with a hardware phase lock-in amplifier, and is also consistent with the software dual phase-locking algorithm.

引用

页数：4

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