Analysis and Performance of the Thomson Scattering Diagnostics on HT-7 Tokamak Based on I-EMCCD

A visible light imaging Thomson scattering （VIS-TVTS） diagnostic system has been developed for the measurement of plasma electron temperature on the HT-7 tokamak. The system contains a Nd：YAG laser （A = 532 nm, repetition rate 10 Hz, total pulse duration ≈ 10 ns, pulse energy 〉 1.0 J）, a grating spe...

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Published inPlasma science & technology Vol. 16; no. 8; pp. 721 - 725
Main Author 邵春强 赵君煜 臧庆 韩效锋 席晓琦 杨建华 陈慧 胡爱兰
Format Journal Article
LanguageEnglish
Published 01.08.2014
Subjects
Asymptotic properties
Diagnostic systems
Diffraction gratings
Electron temperature
Gratings (spectra)
HT-7托卡马克
HT-7装置
Lasers
Thomson scattering
Tokamak devices
YAG激光器
性能
数据采集分析系统
汤姆逊散射
测量能力
诊断系统
Online AccessGet full text
ISSN1009-0630
DOI10.1088/1009-0630/16/8/01

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Summary:A visible light imaging Thomson scattering （VIS-TVTS） diagnostic system has been developed for the measurement of plasma electron temperature on the HT-7 tokamak. The system contains a Nd：YAG laser （A = 532 nm, repetition rate 10 Hz, total pulse duration ≈ 10 ns, pulse energy 〉 1.0 J）, a grating spectrometer, an image intensifier （I.I.） lens coupled with an electron multiplying CCD （EMCCD） and a data acquisition and analysis system. In this paper, the measurement capability of the system is analyzed. In addition to the performance of the system, the capability of measuring plasma electron temperature has been proved. The profile of electron temperature is presented with a spatial resolution of about 0.96 cm （seven points） near the center of the plasma.
Bibliography:SHAO Chunqiang, ZHAO Junyu , ZANG Qing, HAN Xiaofeng, XI Xiaoqi, YANG Jianhua, CHEN nui ,HU Ailan （ Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China）
visible imaging Thomson scattering, electron temperature, measurement ca-pability, I-EMCCD
34-1187/TL
A visible light imaging Thomson scattering （VIS-TVTS） diagnostic system has been developed for the measurement of plasma electron temperature on the HT-7 tokamak. The system contains a Nd：YAG laser （A = 532 nm, repetition rate 10 Hz, total pulse duration ≈ 10 ns, pulse energy 〉 1.0 J）, a grating spectrometer, an image intensifier （I.I.） lens coupled with an electron multiplying CCD （EMCCD） and a data acquisition and analysis system. In this paper, the measurement capability of the system is analyzed. In addition to the performance of the system, the capability of measuring plasma electron temperature has been proved. The profile of electron temperature is presented with a spatial resolution of about 0.96 cm （seven points） near the center of the plasma.
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ISSN:1009-0630
DOI:10.1088/1009-0630/16/8/01