HT-7装置线积分信号的快速空间反演方法

A real-time algorithm of spatial inversion for the line-integral signals and its application in HT-7 Tokamak

介绍了一种通过线积分测量数据来快速重建等离子体参数的算法。该算法基于Radon反演定理,通过级数展开与最小二乘原理的方法来得到等离子体参数在托卡马克小圆截面上的Radon变换,最后由Radon逆变换公式给出等离子体参数的空间分布。应用这种算法研究了HT-7装置交流放电实验的软X射线在电流正负半周期空间分布的非对称性现象。

A new algorithm is introduced to reconstruct the parameters of plasma from line-integral data. This method is based on the Radon inversion theory. The series expansion and least-square methods are employed to get the Radon inversion of the plasma parameter on the minor cross-section of tokamak. Then the plasma parameter can be given by the Radon inversion formula. This algorithm is introduced to study the asymmetric phenomenon between the positive and negative current plasma of the X-ray emission in HT-7 tokamak.