EAST等离子体电子密度测量与处理算法设计  

Plasma Electron Density Measuring and Processing Algorithm Design in EAST Tokamak

作　　者：舒双宝[1] 罗家融[1,2] 张海花[2] 王华忠[1] 徐从东[1] 

机构地区：[1]中国科学院等离子体物理研究所,合肥230031 [2]东华大学理学院,上海201620

出　　处：《核电子学与探测技术》2009年第3期615-619,共5页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金(10475079)资助项目

摘　　要：介绍EAST托卡马克中HCN激光干涉仪测量等离子电子密度基本原理,给出了等离子体电子密度HCN信号处理算法,该算法能准确地去零漂并有效的进行信号翻转处理,并利用小波分析的方法对信号进行去噪处理,获得了高精度低噪音的HCN信号。该算法同样可用于HT7托卡马克五道HCN信号处理中,利用好的HCN信号可以更加准确地反演等离子体密度空间分布,这种密度处理算法是行之有效的。HCN interferometer is used in EAST Tokamak for measuring plasma electron density. The plasma electron density HCN signal processing algorithm is given, which can eliminate baseline offset accurately and process HCN signal overturning effectively. With the wavelet analysis method to denoise HCN signal, high accuracy and low noise HCN signal is obtained. This processing method can also be used in five HCN signals processing in HT7 Tokamak. Using good HCN signal can reconstruct the spatial distribution of plasma density more accurately. The algorithm of density processing is effective.

关 键 词：EAST 等离子体电子密度 HCN信号 滤波处理 小波去噪 

分 类 号：O572[理学—粒子物理与原子核物理]