Development of high-speed vacuum ultraviolet spectroscopy using a modified Seya-Namioka monochromator and channel electron multiplier detector in the HL-2A tokamak.
Development of high-speed vacuum ultraviolet spectroscopy using a modified Seya-Namioka monochromator and channel electron multiplier detector in the HL-2A tokamak.
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DOI：
10.1063/1.5037504
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发表时间：
2018-10
期刊：
影响因子：
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通讯作者：
Kai Zhang;D. Zheng;P. Sun;Z. Cui;C. Dong;P. Lu;B. Fu;Zetian Liu;Zhongbing Shi;Qingwei Yang
中科院分区：
文献类型：
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作者：
Kai Zhang;D. Zheng;P. Sun;Z. Cui;C. Dong;P. Lu;B. Fu;Zetian Liu;Zhongbing Shi;Qingwei Yang
通过在改进的Seya-Namioka谱仪中引入新型通道电子倍增器，研制了HL-2A装置的高速真空紫外单色器。在研制阶段，该系统在HL-2A常规等离子体观测的典型工作参数下，获得了2000以上的良好信噪比。波长校准是利用氦和氩放电的空心阴极光源的特征线发射进行的。给出了在60 kHz采样率下单色光的首次测量结果，并与可见光Dα信号进行了比较。
A high-speed vacuum ultraviolet monochromator is developed for the HL-2A tokamak through the introduction of a novel channel electron multiplier in a modified Seya-Namioka spectrometer. A good signal to noise ratio of above 2000 is attained in the development phase of the system with typical operating parameters for observing routine HL-2A plasmas. The wavelength calibration is performed using characteristic line emissions from a hollow cathode light source with helium and argon discharges. The first measurement result of the monochromator at a sample rate of 60 kHz is presented in comparison with the visible Dα signals.