标题： 通过渐近匹配技术研究托卡马克反应堆中电子回旋辐射测温法对新经典撕裂模式的检测 显示英文标题

标题： Investigation of Neoclassical Tearing Mode Detection by ECE Radiometry in Tokamak Reactors via Asymptotic Matching Techniques

摘要： TJ环形撕裂模式代码用于对ITER类似托卡马克等离子体平衡中由经典撕裂模式(NTMs)产生的电子回旋辐射(ECE)信号进行现实预测。 在所谓的"外区"，即等离子体的大部分区域，具有与NTM相同环向模式数但不同极向模式数的磁场螺旋谐波通过Shafranov位移和平衡磁通面的形状相互耦合。 在"内区"，即NTM有理表面附近的区域，其极向和环向模式数比例与NTM相同的螺旋谐波非线性地相互耦合，以产生径向不对称的磁岛链。 内区和外区的解彼此进行渐近匹配。 渐近匹配过程确定了NTM的整体磁结构，以及该模式引起的电子温度的全局扰动。 开发了一种模拟的ECE诊断方法，该方法考虑了由于发射电子的相对论质量增加而导致的信号频率下移和展宽。 显示英文摘要

摘要： The TJ toroidal tearing mode code is used to make realistic predictions of the electron cyclotron emission (ECE) signals generated by neoclassical tearing modes (NTMs) in an ITER-like tokamak plasma equilibrium. In the so-called "outer region'', which comprises the bulk of the plasma, helical harmonics of the magnetic field with the same toroidal mode number as the NTM, but different poloidal mode numbers, are coupled together by the Shafranov shifts and shaping of the equilibrium magnetic flux-surfaces. In the "inner region'', which is localized in the vicinity of the NTM rational surface, helical harmonics whose poloidal and toroidal mode numbers are in the same ratio as those of the NTM are coupled together nonlinearly to produce a radially asymmetric magnetic island chain. The solutions in the inner and outer regions are asymptotically matched to one another. The asymptotic matching process determines the overall magnetic structure of the NTM, as well as the global perturbation to the electron temperature caused by the mode. A simulated ECE diagnostic is developed that accounts for the downshifting and broadening in frequency of the signal due to the relativistic mass increase of the emitting electrons.