Development of beam emission spectroscopy for turbulence transport study in Heliotron J
Development of beam emission spectroscopy for turbulence transport study in Heliotron J
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DOI：
10.1063/1.4959949
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发表时间：
2016-11-01
影响因子：
1.6
通讯作者：
Mizuuchi, T.
中科院分区：
文献类型：
--
作者：
Kobayashi, S.;Ohshima, S.;Mizuuchi, T.
本文介绍了Heliotron J湍流输运研究用束发射光谱仪（BES）的发展研究。通过对瞄准线的改进（边10 × 4和边10 × 2），我们获得了二维BES图象。采用制冷系统研究了制冷对雪崩光电二极管（APD）组件电噪声降低的影响。当APD元件的温度设定为-20 ℃时，电噪声可以降低50%以上。用两个发光二极管灯测试了低信号电平下相位差的测量误差。APD冷却对改善APD低信号时的测量误差有一定的作用。出版社：AIP Publishing
This paper describes the development study of the beam emission spectroscopy (BES) for the turbulent transport study in Heliotron J. Modification of the sightlines (10 x 4 for edge and 10 x 2 for edge) enables us to obtain 2-dimensional BES imaging. The cooling effect on the reduction in the electrical noise of avalanche photodiode (APD) assembly has been investigated using a refrigerant cooling system. When the temperature of the APD element has set to be -20 degrees C, the electrical noise can be reduced more than 50%. The measurement error of the phase difference in the case of low signal level has been tested by two light-emitting diode lamps. The APD cooling has an effect to improve the measurement error at the low signal level of APD. Published by AIP Publishing.