Abstract:

In order to obtain the important plasma parameters such as ion temperatures, rotate velocity and their profiles, a CXRS (charge exchange recombination spectroscopy) diagnosis was developed in HL-2A tokamak. In order to get the diagnostics signals with enough signal-to-noise ratio, the EMCCD detector suitable for the weak signal and the dedicated optical collection system converging light flux effectively were utilized. The experiment result proved that the design was feasible.

Key words: CXRS diagnostic, NB attenuation, Optical collection system, Signal-to-noise raio (SNR)

摘要：

为了获取HL-2A等离子体的离子温度、旋转速度及其分布等重要参数，首次在HL-2A装置上开展了CXRS诊断。通过利用能有效探测微弱光的EMCCD和特殊设计的光学采集系统，获得了具有足够信噪比的诊断信号。实验得到的测量信号分析表明，设计是切实可行的。

关键词: CXRS诊断, 中性束衰减, 光学采集系统, 信噪比