Modeling of 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

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Article number116060
JournalNuclear Fusion
Volume61
Issue number11
DOIs
StatePublished - Nov 2021

Keywords

  • energetic particles
  • optimization
  • stellarators

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