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Stellarators with permanent magnets

Authors :
Helander, P.
Drevlak, M.
Zarnstorff, M.
Cowley, S. C.
Source :
Phys. Rev. Lett. 124, 095001 (2020)
Publication Year :
2019

Abstract

It is shown that the magnetic-field coils of a stellarator can, at least in principle, be substantially simplified by the use of permanent magnets. Such magnets cannot create toroidal magnetic flux but they can be used to shape the plasma and thus to create poloidal flux and rotational transform, thereby easing the requirements on the magnetic-field coils. As an example, a quasiaxisymmetric stellarator configuration is constructed with only 8 circular coils (all identical) and permanent magnets.

Subjects

Subjects :
Physics - Plasma Physics

Details

Database :
arXiv
Journal :
Phys. Rev. Lett. 124, 095001 (2020)
Publication Type :
Report
Accession number :
edsarx.1907.01363
Document Type :
Working Paper
Full Text :
https://doi.org/10.1103/PhysRevLett.124.095001