Ripple transport in helical-axis advanced stellarators: a comparison with classical stellarator/torsatrons
Ripple transport in helical-axis advanced stellarators: a comparison with classical stellarator/torsatrons
复制标题
螺旋轴先进仿星器中的纹波传输：与经典仿星器/torsatrons的比较
DOI：
10.2172/93468
复制
发表时间：
1994
影响因子：
2.2
通讯作者：
W. Hitchon
中科院分区：
文献类型：
--
作者：
C. Beidler;W. Hitchon
基于弹跳平均动力学方程的解，计算了捕获在星光仪磁场螺旋波纹中的粒子的新经典输运率。这些计算采用了磁场强度B的模型，这是对各种星光仪类型设备的实际B的精确近似，其中包括螺旋轴高级星光仪(Helias)以及传统的星光仪和卫星加速器。进行了比较，结果表明，太阳神的概念导致整个长平均自由路径制度的新古典主义传输率显著降低，其中NU-1制度的减少尤其显著。这些发现得到了数值模拟的证实。进一步地，结果表明，深陷在氦原子中的粒子的行为可能与经典的恒星加速器/加速器中的完全不同，因此，径向电场对输运的有利影响使它们在比通常更低的碰撞频率上感受到它们自己。
Calculations of the neoclassical transport rates due to particles trapped in the helical ripples of a stellarator's magnetic field are carried out, based on solutions of the bounce-averaged kinetic equation. These calculations employ a model for the magnetic field strength, B, which is an accurate approximation to the actual B for a wide variety of stellarator-type devices, among which are Helical-Axis Advanced Stellarators (Helias) as well as conventional stellarators and torsatrons. Comparisons are carried out in which it is shown that the Helias concept leads to significant reductions in neoclassical transport rates throughout the entire long-mean-free-path regime, with the reduction being particularly dramatic in the nu -1 regime. These findings are confirmed by numerical simulations. Further, it is shown that the behaviour of deeply trapped particles in Helias can be fundamentally different from that in classical stellarator/torsatrons; as a consequence, the beneficial effects of a radial electric field on the transport make themselves felt at a lower collision frequency than is usual.
影响因子：
3.3
作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox
通讯作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox