A versatile ray-tracing code for studying rf wave propagation in toroidal magnetized plasmas
A versatile ray-tracing code for studying rf wave propagation in toroidal magnetized plasmas
复制标题
DOI：
10.1088/0741-3335/54/4/045003
复制
发表时间：
2012-04
影响因子：
2.2
通讯作者：
Y. Peysson;Joan Decker;Lorenzo Morini
中科院分区：
文献类型：
--
作者：
Y. Peysson;Joan Decker;Lorenzo Morini
开发了一个新的射线追踪程序C3 PO，用于研究任意电磁射频波在磁化环形等离子体中的传播。其结构设计为在选择坐标系和电介质模型方面具有最大的灵活性。该代码的多功能性使其特别适用于集成建模系统。使用一个坐标系，反映了嵌套结构的磁通量表面在托卡马克，快速和准确的计算内的等离子体分界线，可以使用分析导数的样条傅立叶插值的轴对称环形磁流体平衡。反场箍缩磁结构的应用也包括在内。三维扰动的轴对称环形MHD平衡的影响，由于离散的磁线圈系统或等离子体波动在原来的准光学方法，也进行了研究。使用龙格-库塔-Fehlberg方法求解的一组常微分方程，射线跟踪代码被广泛基准对低杂波和电子回旋波的分析模型和其他代码。
A new ray-tracing code named C3PO has been developed to study the propagation of arbitrary electromagnetic radio-frequency (rf) waves in magnetized toroidal plasmas. Its structure is designed for maximum flexibility regarding the choice of coordinate system and dielectric model. The versatility of this code makes it particularly suitable for integrated modeling systems. Using a coordinate system that reflects the nested structure of magnetic flux surfaces in tokamaks, fast and accurate calculations inside the plasma separatrix can be performed using analytical derivatives of a spline-Fourier interpolation of the axisymmetric toroidal MHD equilibrium. Applications to reverse field pinch magnetic configuration are also included. The effects of 3D perturbations of the axisymmetric toroidal MHD equilibrium, due to the discreteness of the magnetic coil system or plasma fluctuations in an original quasi-optical approach, are also studied. Using a Runge–Kutta–Fehlberg method for solving the set of ordinary differential equations, the ray-tracing code is extensively benchmarked against analytical models and other codes for lower hybrid and electron cyclotron waves.