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核聚变与等离子体物理 ›› 2007, Vol. 27 ›› Issue (3): 231-236.

• 研究报告 • 上一篇    下一篇

HT-7激光汤姆逊散射信号处理电路设计

史灵卫,臧 庆,许雅劼,胡庆生,凌必利,赵君煜   

  1. (中国科学院等离子体物理研究所,合肥 230031)
  • 收稿日期:2006-09-13 修回日期:2007-01-08 出版日期:2007-09-15 发布日期:2011-08-15
  • 作者简介:史灵卫(1980-),男,河南省洛阳市伊川县人,硕士研究生,主要从事等离子体激光诊断方面的研究。
  • 基金资助:

    国家自然科学基金资助项目(10375068)

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

SHI Ling-wei, ZANG Qing, XU Ya-jie, HU Qing-sheng, LING Bi-li, ZHAO Jun-yu   

  1. (Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031)
  • Received:2006-09-13 Revised:2007-01-08 Online:2007-09-15 Published:2011-08-15

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。

关键词: HT-7托卡马克, 汤姆逊散射, 电路噪声

Abstract:

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.

Key words: HT-7 tokamak, Thomson scattering, Circuit noise

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