Stellarators with Permanent Magnets

Helander, P.; Drevlak, M.; Zarnstorff, M.; Cowley, S.  C.

doi:10.1103/physrevlett.124.095001

Stellarators with Permanent Magnets

Journal Article · Wed Mar 04 23:00:00 EST 2020 · Physical Review Letters

DOI:https://doi.org/10.1103/physrevlett.124.095001· OSTI ID:1658825

^[1]; Drevlak, M. ^[1]; Zarnstorff, M. ^[2]; Cowley, S. C. ^[2]

Max Planck Inst. fuer Plasmaphysik, Greifswald (Germany)
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

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.

Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE; Simons Foundation

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 1658825

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 9 Vol. 124; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

References (10)

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Cited By (4)

Calculation of permanent magnet arrangements for stellarators: a linear least-squares method Landreman, Matt; Zhu, Caoxiang Plasma Physics and Controlled Fusion, Vol. 63, Issue 3 https://doi.org/10.1088/1361-6587/abd13d	journal	January 2021
Designing stellarators using perpendicular permanent magnets Zhu, Caoxiang; Zarnstorff, Michael; Gates, David Nuclear Fusion, Vol. 60, Issue 7 https://doi.org/10.1088/1741-4326/ab9006	journal	June 2020
Adjoint methods for stellarator shape optimization and sensitivity analysis Paul, Elizabeth arXiv https://doi.org/10.48550/arxiv.2005.07633	preprint	January 2020
Greedy permanent magnet optimization Kaptanoglu, Alan A.; Conlin, Rory; Landreman, Matt arXiv https://doi.org/10.48550/arxiv.2208.10620	text	January 2022

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