HL-2M真空紫外光谱初始诊断系统研制  

Development of the preliminary vacuum ultraviolet spectroscopy on HL-2M tokamak

作　　者：张凯 郑典麟 董春凤[1] 孙平[1] 冯雷 石中兵[1] ZHANG Kai;ZHENG Dian-lin;DONG Chun-feng;SUN Ping;FENG Lei;SHI Zhong-bing(Southwestern Institute of Physics,Chengdu 610041)

机构地区：[1]核工业西南物理研究院,成都610041

出　　处：《核聚变与等离子体物理》2021年第S02期527-532,共6页Nuclear Fusion and Plasma Physics

基　　金：国家重点研发专项(2017YFE0301306);国家磁约束聚变能研究专项(2014GB108003)。

摘　　要：基于Seya-Namioka结构200mm焦距可换光栅,研制了HL-2M真空紫外(VUV)光谱诊断光谱仪。该系统在300~3000A的真空紫外光谱范围具有较高的探测效率,时间分辨优于1μs。经过结构设计、光谱标定和安装调试,单通道VUV光谱仪已成功安装在HL-2M装置中平面窗口。在HL-2M装置初始放电实验中,利用该系统测量到C、O、N等杂质的多条特征谱线,展现出优秀的信噪比和高灵敏度。HL-2 M vacuum ultraviolet(VUV) spectral diagnostic system is developed based a combination of multiple Seya-Namioka spectrometers, each with an exchangeable grating. Due to an optimization in gratings, the wavelength coverage of the whole spectral system is 300? to 3000A with temporal resolution better than 1μs.After structural design and fabrication, spectral calibration and commissioning, a single channel VUV spectrometer was successfully set up in HL-2 M tokamak, viewing horizontally from a midplane port. Spectral lines of impurity species(C, O, N) were observed in HL-2 M first plasma discharges by the spectrometer, which showed excellent signal-to-noise ratio and high sensitivity.

关 键 词：真空紫外光谱 杂质光谱 通道电子倍增管 空心阴极灯 

分 类 号：O536[理学—等离子体物理]