论文标题
评估全波对麦克斯威尔下部水杂交波阻尼的影响
An Assessment Of Full-Wave Effects On Maxwellian Lower-Hybrid Wave Damping
论文作者
论文摘要
低杂交电流驱动器（LHCD）执行器是现代融合实验的重要组成部分以及提出的融合反应器。但是，LHCD的仿真通常与实验结果和彼此之间有很大不同，尤其是在推断的功率沉积曲线形状中。在这里，我们研究了这种差异的一些可能原因。 “全波”效应，例如干扰和衍射，这些效应被标准的射线缩放模拟以及近反射和苛性射线的射线缩影的分解所省略。我们首次在现实的Tokamak场景中使用匹配的热式介电张量进行了射线缩放模拟与最先进的全波模拟。我们表明，在以前的工作中，全波模拟与射线跟踪之间的差异主要是由于模拟中的数值和物理不一致所致，我们证明，可以在反应堆相关的阵线与大型射线垂体和较弱的抑制作用中获得射线跟踪和融合全波模拟之间的良好一致性。
Lower-hybrid current drive (LHCD) actuators are important components of modern day fusion experiments as well as proposed fusion reactors. However, simulations of LHCD often differ substantially from experimental results, and from each other, especially in the inferred power deposition profile shape. Here we investigate some possible causes of this discrepancy; "full-wave" effects such as interference and diffraction, which are omitted from standard raytracing simulations and the breakdown of the raytracing near reflections and caustics. We compare raytracing simulations to state-of-the-art full-wave simulations using matched hot-plasma dielectric tensors in realistic tokamak scenarios for the first time. We show that differences between full-wave simulations and raytracing in previous work were primarily due to numerical and physical inconsistencies in the simulations, and we demonstrate that good agreement between raytracing and converged full-wave simulations can be obtained in reactor relevant-scenarios with large ray caustics and in situations with weak damping.
