Modeling of energetic particle transport in optimized stellarators. (14th October 2021)

• Record Type: Journal Article
• Authors: Bader, A.; Anderson, D.T.; Drevlak, M.; Faber, B.J.; Hegna, C.C.; Henneberg, S.; Landreman, M.; Schmitt, J.C.; Suzuki, Y.; Ware, A.
• Is Part Of: Nuclear fusion. Volume 61:Number 11(2021)
• Publication Date: 2021-10-14
• Subjects: stellarators -- energetic particles -- optimization; Nuclear fusion -- Periodicals; 621.48405
• DOI: 10.1088/1741-4326/ac2991
• Languages: English
• ISSNs: 0029-5515

Abstract

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 Γc metric, which attempts to align contours of the second adiabatic invariant with flux surfaces. Quasisymmetric configurations that simultaneously perform well on Γc and quasisymmetry have the best overall confinement, with collisional losses under 3%, approaching the performance of ITER with ferritic inserts.