论文标题
单场 - 阶层准iS动力学出色的恒星
A single-field-period quasi-isodynamic stellarator
论文作者
论文摘要
提出了单场式准式恒星恒星构型。这种构型类似于扭曲的带，是通过直接结构的方法获得的，即通过在距磁轴的距离内的扩展中找到。但是，它的发现依赖于涉及数值优化的附加步骤，该步骤在由一组可调磁场参数定义的近轴配置空间内执行。这种优化使用SIMSOPT代码在单个CPU核心上完成的30秒完成，产生了具有出色限制的解决方案，如新古典传输的常规功绩，有效的波纹，有效的纵横比以八个。描述了导致该配置的优化参数，评估其限制特性，并找到一组磁场线圈。低碰撞率的最终运输远小于W7-X，并且由于现场周期数量减少，该设备需要更少的线圈。
A single-field-period quasi-isodynamic stellarator configuration is presented. This configuration, which resembles a twisted strip, is obtained by the method of direct construction, that is, it is found via an expansion in the distance from the magnetic axis. Its discovery, however, relied on an additional step involving numerical optimization, performed within the space of near-axis configurations defined by a set of adjustable magnetic-field parameters. This optimization, completed in 30 seconds on a single cpu core using the SIMSOPT code, yields a solution with excellent confinement, as measured by the conventional figure of merit for neoclassical transport, effective ripple, at a modest aspect ratio of eight. The optimization parameters that led to this configuration are described, its confinement properties are assessed, and a set of magnetic-field coils is found. The resulting transport at low collisionality is much smaller than that of W7-X, and the device needs significantly fewer coils thanks to the reduced number of field periods.
