EAST托卡马克束发射光谱诊断研制
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- 论文作者：王华杰 ; 余羿 ; 陈冉 ; 吕波 ; 侯玉梅 ; 冯双园 ; 吴一帆 ; 袁博达 ; 龚少博 ; 刘哲 ; 石跃江 ; 叶民友 ; 万宝年
- 年：2016
- 作者机构：中国科学技术大学核科学与技术学院;合肥物质研究院等离子体物理研究所;
- 论文关键词：BES诊断 ; 滤波片 ; 二维密度涨落 ; L-H转换
- 英文论文关键词：BES diagnostic ; filter ; two-dimensional density fluctuation ; L-H transition
- 会议召开时间：2016-10-21
- 会议录名称：安徽省第四届（2016年）“卓凌杯”真空科技青年创新大赛暨学术研讨会论文集
- 语种：中文
- 分类号：TL631.24
- 学会代码：AHZK
- 会议名称：安徽省第四届（2016年）“卓凌杯”真空科技青年创新大赛暨学术研讨会
- 会议地点：中国安徽安庆
- 主办单位：安徽省真空学会
- 学会名称：安徽省真空学会
- 页数：11
- 文件大小：599k
- 原文格式：D
- 会议级别：地方
摘要
本文介绍了EAST(Experimental Advanced Superconducting Tokamak)装置上束发射光谱诊断BES(Beam Emission Spectroscopy)的研制工作和初步实验结果。该诊断系统是一套基于中性束注入的可见光光谱诊断系统。探测器采用的是S8550APD相机,一共有128道探测通道,以水平方向16道极向8道的矩形方式排列。通过一套中心波长为659.33nm,半高宽为1.59nm的带通三腔干涉滤波片将信号从背景Dα谱线和C杂质辐射中提取出来。每一次EAST放电实验中,本系统以2MHz的时间分辨率和1-3cm的空间分辨率在等离子体小截面上获取一个长宽分别为20cm和10cm的等离子体的密度涨落二维分布。通过改变诊断系统的观察角,可以获取从芯部到边界等离子体的整个小截面的二维密度涨落分布。本论文还给出了该诊断系统关键部件滤波片的测试结果和最近一轮EAST放电实验中测得的等离子体密度涨落在低约束模——高约束模转换(L-H transition)中的变化,验证了EAST托卡马克上的BES诊断系统研制的成功,这也是国内第一套高时空分辨的二维BES光谱诊断系统。
Beam Emission Spectroscopy(BES) diagnostic based on neutral beam injection(NBI) has recently been developed in EAST TOKAMAK. A 128-channel Hamamatsu S8550 APD detector array is chosen as the core detecting device. Three-cavity-interference filter with a center frequency of 659.33 nm and a bandwidth of 1.59 nm is used to eliminate the interference Dα signal and carbon impurities radiation. This BES system diagnoses the plasma density fluctuation with a sample rate of 2MHz and a spatial resolution of 1-3cm. It can diagnose a rectangular area in one shot, with a radial length of 20 cm and a vertical length of 10 cm in the plasma cross section, which is movable from the core plasma to the edge of low field side of EAST by means of changing the angle of beam splitting lens. Filter test is also presented. Data in the recent experiments of BES show the great change of density fluctuations in the L-H transition.
Beam Emission Spectroscopy(BES) diagnostic based on neutral beam injection(NBI) has recently been developed in EAST TOKAMAK. A 128-channel Hamamatsu S8550 APD detector array is chosen as the core detecting device. Three-cavity-interference filter with a center frequency of 659.33 nm and a bandwidth of 1.59 nm is used to eliminate the interference Dα signal and carbon impurities radiation. This BES system diagnoses the plasma density fluctuation with a sample rate of 2MHz and a spatial resolution of 1-3cm. It can diagnose a rectangular area in one shot, with a radial length of 20 cm and a vertical length of 10 cm in the plasma cross section, which is movable from the core plasma to the edge of low field side of EAST by means of changing the angle of beam splitting lens. Filter test is also presented. Data in the recent experiments of BES show the great change of density fluctuations in the L-H transition.
引文
[1]Y.T.Song,D.M.Yao,S.J.Du,S.T.Wu,P.D.Weng,Static and dynamic mechanical analyses for the vacuum vessel of EAST superconducting tokamak device,Plasma Sci Technol,8(2006)221-228.
[2]S.T.Wu,W.Y.Wu,Y.N.Pan,D.M.Yao,Z.Y.Liao,J.Yu,B.Z.Li,Z.M.Chen,W.J.Pan,Y.T.Song,W.G.Chen,J.Wei,P.D.Weng,D.M.Gao,Y.X.Wan,J.G.Li,The R&D progress of the EAST(HT-7U)superconducting Tokamak,20th Ieee/Npss Symposium on Fusion Engineering,Proceedings,(2003)646-651.
[3]Y.T.Song,D.A.Yao,S.Wu,P.Weng,Structural analysis and manufacture for the vacuum vessel of experimental advanced superconducting tokamak(EAST)device,Fusion Eng Des,81(2006)1117-1122.
[4]A.R.Field,D.Dunai,R.Gaffka,Y.C.Ghim,I.Kiss,B.Meszaros,T.Krizsanoczi,S.Shibaev,S.Zoletnik,Beam emission spectroscopy turbulence imaging system for the MAST spherical tokamak,Rev Sci Instrum,83(2012).
[5]M.Lampert,G.Anda,A.Czopf,G.Erdei,D.Guszejnov,A.Kovacsik,G.I.Pokol,D.Refy,Y.U.Nam,S.Zoletnik,Combined hydrogen and lithium beam emission spectroscopy observation system for Korea Superconducting Tokamak Advanced Research,Rev Sci Instrum,86(2015).
[6]C.D.Hu,Y.H.Xie,Y.L.Xie,S.Liu,Y.J.Xu,L.Z.Liang,C.C.Jiang,P.Sheng,Y.M.Gu,J.Li,Z.M.Liu,Overview of Development Status for EAST-NBI System,Plasma Sci Technol,17(2015)817-825.
[7]Z.M.Liu,S.Liu,C.C.Jiang,Y.H.Xie,C.D.Hu,Design and Development of a Power Supply System for NBI Test Stand of EAST,J Fusion Energ,33(2014)398-405.
[8]Y.H.Xie,C.D.Hu,H.W.Zhao,Analysis of ion beam optics of tetrode accelerator for neutral beam injector on the experimental advanced superconducting Tokamak,Nucl Instrum Meth A,791(2015)22-26.
[9]G.R.Mc Kee,C.Fenzi,R.J.Fonck,M.Jakubowski,Turbulence imaging and applications using beam emission spectroscopy on DIII-D(invited),Rev Sci Instrum,74(2003)2014-2019.
[2]S.T.Wu,W.Y.Wu,Y.N.Pan,D.M.Yao,Z.Y.Liao,J.Yu,B.Z.Li,Z.M.Chen,W.J.Pan,Y.T.Song,W.G.Chen,J.Wei,P.D.Weng,D.M.Gao,Y.X.Wan,J.G.Li,The R&D progress of the EAST(HT-7U)superconducting Tokamak,20th Ieee/Npss Symposium on Fusion Engineering,Proceedings,(2003)646-651.
[3]Y.T.Song,D.A.Yao,S.Wu,P.Weng,Structural analysis and manufacture for the vacuum vessel of experimental advanced superconducting tokamak(EAST)device,Fusion Eng Des,81(2006)1117-1122.
[4]A.R.Field,D.Dunai,R.Gaffka,Y.C.Ghim,I.Kiss,B.Meszaros,T.Krizsanoczi,S.Shibaev,S.Zoletnik,Beam emission spectroscopy turbulence imaging system for the MAST spherical tokamak,Rev Sci Instrum,83(2012).
[5]M.Lampert,G.Anda,A.Czopf,G.Erdei,D.Guszejnov,A.Kovacsik,G.I.Pokol,D.Refy,Y.U.Nam,S.Zoletnik,Combined hydrogen and lithium beam emission spectroscopy observation system for Korea Superconducting Tokamak Advanced Research,Rev Sci Instrum,86(2015).
[6]C.D.Hu,Y.H.Xie,Y.L.Xie,S.Liu,Y.J.Xu,L.Z.Liang,C.C.Jiang,P.Sheng,Y.M.Gu,J.Li,Z.M.Liu,Overview of Development Status for EAST-NBI System,Plasma Sci Technol,17(2015)817-825.
[7]Z.M.Liu,S.Liu,C.C.Jiang,Y.H.Xie,C.D.Hu,Design and Development of a Power Supply System for NBI Test Stand of EAST,J Fusion Energ,33(2014)398-405.
[8]Y.H.Xie,C.D.Hu,H.W.Zhao,Analysis of ion beam optics of tetrode accelerator for neutral beam injector on the experimental advanced superconducting Tokamak,Nucl Instrum Meth A,791(2015)22-26.
[9]G.R.Mc Kee,C.Fenzi,R.J.Fonck,M.Jakubowski,Turbulence imaging and applications using beam emission spectroscopy on DIII-D(invited),Rev Sci Instrum,74(2003)2014-2019.