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Quasisymmetry: Difference between revisions
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Quasisymmetric (quasihelically symmetric) plasma equilibria are non-[[axisymmetry|axisymmetric]] configurations in which the magnetic field strength depends only on one angular coordinate within the magnetic [[flux surface]]s. | Quasisymmetric (quasihelically symmetric) plasma equilibria are non-[[axisymmetry|axisymmetric]] configurations in which the magnetic field strength depends only on one angular coordinate within the magnetic [[flux surface]]s. | ||
<ref>[[doi:10.1063/1.859916|D.A. Garren and A.H. Boozer, ''Existence of quasihelically symmetric stellarators'', Phys. Fluids B 3 (1991) 2822]]</ref> | <ref>[[doi:10.1063/1.859916|D.A. Garren and A.H. Boozer, ''Existence of quasihelically symmetric stellarators'', Phys. Fluids B 3 (1991) 2822]]</ref> | ||
This concept is part of the program of [[stellarator optimization]] (designing stellarators to have reduced [[Neoclassical transport]]). | |||
Types of quasisymmetry: | |||
* Quasihelical symmetry, on which the design of the [http://www.hsx.wisc.edu/ HSX stellarator] (operational) is based.<ref>[[doi:10.1585/pfr.3.S1002|J.N. Talmadge, F.S.B. Anderson, D.T. Anderson, C. Deng, W. Guttenfelder, K.M. Likin, J. Lore, J.C. Schmitt, K. Zhai, ''Experimental Tests of Quasisymmetry in HSX'', Plasma and Fusion Research '''3''' (2008) S1002]]</ref> | * Quasihelical (QH) symmetry, on which the design of the [http://www.hsx.wisc.edu/ HSX stellarator] (operational) is based.<ref>[[doi:10.1585/pfr.3.S1002|J.N. Talmadge, F.S.B. Anderson, D.T. Anderson, C. Deng, W. Guttenfelder, K.M. Likin, J. Lore, J.C. Schmitt, K. Zhai, ''Experimental Tests of Quasisymmetry in HSX'', Plasma and Fusion Research '''3''' (2008) S1002]]</ref> | ||
* Quasipoloidal symmetry, on which the design of the [http://web.utk.edu/~qps/ QPS stellarator] (under construction) is based.<ref>[[doi:10.1088/0029-5515/45/8/020|D.A. Spong, S.P. Hirshman, J.F. Lyon, L.A. Berry and D.J. Strickler, ''Recent advances in quasi-poloidal stellarator physics issues'', Nucl. Fusion '''45''' (2005) 918]]</ref> | * Quasipoloidal (QP) symmetry, on which the design of the [http://web.utk.edu/~qps/ QPS stellarator] (under construction) is based.<ref>[[doi:10.1088/0029-5515/45/8/020|D.A. Spong, S.P. Hirshman, J.F. Lyon, L.A. Berry and D.J. Strickler, ''Recent advances in quasi-poloidal stellarator physics issues'', Nucl. Fusion '''45''' (2005) 918]]</ref> | ||
* Quasi-axisymmetry (QA) | |||
== See also == | == See also == | ||