In omnigenous magnetic fields, charged particles are perfectly confined in the absence of collisions and turbulence. For this reason, the magnetic configuration is optimized to be close to omnigenity in any candidate for a stellarator fusion reactor. However, approaching omnigenity imposes severe constraints on the spatial variation of the magnetic field. In particular, the topology of the contours of constant magnetic field strength on each magnetic surface must be such that there are no particles transitioning between different types of wells. This, in turn, usually leads to complicated plasma shapes and coils. This Letter presents a new family of optimized fields that display tokamak-like collisional energy transport while having transitioning particles. This result radically broadens the space of accessible reactor-relevant configurations.

中文翻译：

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分段全源恒星


在全能磁场中，带电粒子在没有碰撞和湍流的情况下被完全限制。因此，磁性配置经过优化，在任何候选仿星器聚变反应堆中都接近全能。然而，接近全能性对磁场的空间变化施加了严格的限制。特别是，每个磁表面上恒定磁场强度等值线的拓扑结构必须确保没有粒子在不同类型的阱之间过渡。反过来，这通常会导致复杂的等离子体形状和线圈。这封信介绍了一系列新的优化场，这些场在具有过渡粒子的同时显示类似托卡马克的碰撞能量传输。这一结果从根本上拓宽了可访问的反应堆相关配置的空间。