Optimized compact stellarator with only 4 simple coils | Cambridge, 23 May 2022
Existence of an optimized stellarator with simple coils | Journal of Plasma Physics | Cambridge Core
https://www.cambridge.org/core/journals/journal-of-plasma-physics/article/abs/existence-of-an-optimized-stellarator-with-simple-coils/A529BD8416A077D8E29F086DF574DF28
Existence of an optimized stellarator with simple coils - Volume 88 Issue 3
An optimized compact stellarator with four simple coils is obtained from direct optimization via a coil shape. The new stellarator consists of two interlocking coils and two vertical field coils similar to those of the Columbia Non-neutral Torus (CNT) (Pedersen et al., Phys. Rev. Lett., vol. 88, 2002, pp. 205002). The optimized configuration has a global magnetic well and a low helical ripple level comparable to that of Wendelstein 7-X (W7-X) (Wolf et al., Nucl. Fusion, vol. 57, 2017, pp. 102020). The two interlocking coils have a smooth three-dimensional shape much simpler than those of advanced stellarators such as W7-X. This result opens up possibilities of future stellarator reactors with simplified coils.