Enhanced performance in quasi-isodynamic max- J stellarators with a turbulent particle pinch

Physical review. E 2026 Open access

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Authors: G. G. Plunk, A. Goodman, P. Xanthopoulos, P. Costello, H. M. Smith, K. Aleynikova, C. D. Beidler, M. Drevlak, S. Stroteich, P. Helander
DOI: 10.1103/3q3b-q8nj
Cited by: 3
References: 32

Abstract

Recent stellarator reactor designs demonstrate mostly outward turbulent particle transport, which, without advanced fueling technology, inhibits the formation of density gradients needed for confinement. We introduce “SQuID- τ ,” a self-fueling quasi-isodynamic stellarator capable of sustaining density peaking through inward particle transport caused by turbulence. Temperature and density profile predictions based on high-fidelity gyrokinetic simulations demonstrate enhanced performance, significantly relaxing constraints on the size and magnetic field strength for reactor designs.

Fields of Study & Subjects

Magnetic confinement fusion research Particle accelerators and beam dynamics Particle Accelerators and Free-Electron Lasers

Publication details

Journal / source
Physical review. E
Publisher
American Physical Society (APS)
Volume
113
Issue
4
Publication date
16 March 2026
Language
EN