HT-7激光汤姆逊散射信号处理电路设计  

Read-out of laser Thomson scattering signal on the HT-7 tokamak

作　　者：史灵卫[1] 臧庆[1] 许雅劼[1] 胡庆生[1] 凌必利[1] 赵君煜[1] 

机构地区：[1]中国科学院等离子体物理研究所,合肥230031

出　　处：《核聚变与等离子体物理》2007年第3期231-236,共6页Nuclear Fusion and Plasma Physics

基　　金：国家自然科学基金资助项目(10375068)

摘　　要：为了检测到散射信号且有较高的信噪比,使用硅雪崩二极管(APD)探测器探测汤姆逊散射光,采用电荷敏感运算放大器减小电子噪声。同时,设计了放大电路,并采取了一些抗干扰措施。在实验中,此激光汤姆逊散射系统成功地测量出HT-7等离子体的电子温度。In order to get high signal-to-noise ratio, silicon avalanche photodiode （APD） is used to measure Thomson scattered spectrum. A charge-sensitive preamplifier has been developed for minimizing the noise contribution from detector electronics. Many measures are taken, including a new design electronic amplification circuit and a series of anti-interference technique. Therefore the Thomson scattering diagnostic system is successful to measure the plasma electron temperature on HT-7 tokamak.

关 键 词：HT-7托卡马克 汤姆逊散射 电路噪声 

分 类 号：TN402[电子电信—微电子学与固体电子学]