金属膜电阻型辐射热探测器在EAST上的应用  

Application of Metal Foil Resistive Bolometer on EAST

作　　者：杜薇[1] 段艳敏[1] 胡立群[1] 毛松涛[1] 徐立清[1] 席莹[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：《核电子学与探测技术》2013年第5期581-585,共5页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金(10935004);国家自然科学基金(11261140328)

摘　　要：介绍了托卡马克实验装置(EAST)上用于绝对测量辐射功率的金属膜电阻探测器测量系统。金属膜电阻型探测器采用经典的惠斯通电桥电路结构,结合正弦波激励的载频信号放大技术,该系统实现了对强电磁干扰环境下微弱信号的测量。EAST上的辐射功率测量系统为48路测量阵列,用于测量等离子体放电过程中辐射功率的时空演化。文中给出了对探测器进行绝对标定的结果和典型的测量结果。The metal foil resistive bolometer was successfully applied on EAST device for measurement of radia- tion power. Classical Wheatstone bridge circuit is adopted in the detector and the carrier amplifier technique inspired by sine wave is applied in the electronics. Thus, it is suitable for weak signal measurement in strong e- lectromagnetic interference environment. The measurement system on EAST mainly consists of 48 detectors and corresponding electronics to measure the temporal and spatial distribution of plasma radiation power in the whole plasma poloidal cross - section. Calibration result and typical measurement result on EAST are given in the pa- per.

关 键 词：托卡马克 等离子体 辐射热探测器 载频放大器 

分 类 号：O536[理学—等离子体物理]