HL-2A装置Nd:YAG激光汤姆逊散射多道测量系统
Measurement system of multipoint Thomson scattering on HL-2A Tokamak
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摘要: 利用Nd:YAG激光汤姆逊散射多道测量系统对等离子体多空间点的电子温度和密度进行了测量。用标准光源和电扫描单色仪构成的标定系统对散射光谱的响应系数进行了标定。给出了等离子体中心附近6空间点的温度和密度的测量结果，时间分辨率为100 ms，空间分辨率约为2.2 cm。对实验结果的不确定度进行了估计，为-12% ~ 12%。实验结果证明：系统可测量等离子体温度的空间范围为-35 ~ -3 cm，实验数据稳定可靠。Abstract: The measurement of plasma electron temperature and density in the HL-2A Tokamak using a YAG laser multipoint Thomson scattering system is described. In this system, a standard lamp-monochromator combination is utilized for the calibration of spectral responses. The experimental results of the 6-point electron temperatures and densities around the plasma center are presented during different discharges of plasma with a time resolution of 100 ms and a spatial resolution of 2.2 cm. The total measurement uncertainty of electron temperature are estimated to be ±12%. And the system spatial range of electron temperature measurement is -35 ~ -3 cm.
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