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arXiv · 2106.00716

Energetic particle transport in optimized stellarators

A Bader·D T Anderson·M Drevlak·B J Faber·C C Hegna·S Henneberg·M Landreman·J C Schmitt·Y Suzuki·A Ware
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Abstract

Nine stellarator configurations, three quasiaxisymmetric, three quasihelically symmetric and three non-quasisymmetric are scaled to ARIES-CS size and analyzed for energetic particle content. The best performing configurations with regard to energetic particle confinement also perform the best on the neoclassical {\Gamma}c metric, which attempts to align contours of the second adiabatic invariant with flux surfaces. Quasisymmetric configurations that simultaneously perform well on {\Gamma}c and quasisymmetry have the best overall confinement, with collisional losses under 3%, approaching the performance of ITER with ferritic inserts.

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A Bader, D T Anderson, M Drevlak, B J Faber, C C Hegna, S Henneberg, M Landreman, J C Schmitt, Y Suzuki, A Ware. 2021-06-01. Energetic particle transport in optimized stellarators. https://doi.org/10.1088/1741-4326/ac2991

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