The DESC stellarator code suite Part 3: Quasi-symmetry optimization
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Plasma Physics"
DOI: 10.1017/s0022377823000235
Abstract: The DESC stellarator optimization code takes advantage of advanced numerical methods to search the full parameter space much faster than conventional tools. Only a single equilibrium solution is needed at each optimization step thanks to… read more here.
Keywords: desc stellarator; quasi symmetry; optimization; code ... See more keywords
Direct stellarator coil optimization for nested magnetic surfaces with precise quasi-symmetry
Sign Up to like & getrecommendations! Published in 2022 at "Physics of Plasmas"
DOI: 10.1063/5.0129716
Abstract: We present a robust optimization algorithm for the design of electromagnetic coils that generate vacuum magnetic fields with nested flux surfaces and precise quasi-symmetry. The method is based on a bilevel optimization problem, where the… read more here.
Keywords: magnetic surfaces; quasi symmetry; precise quasi; optimization ... See more keywords
Precise stellarator quasi-symmetry can be achieved with electromagnetic coils
Sign Up to like & getrecommendations! Published in 2022 at "Proceedings of the National Academy of Sciences of the United States of America"
DOI: 10.1073/pnas.2202084119
Abstract: Magnetic fields with quasi-symmetry are known to provide good confinement of charged particles and plasmas, but the extent to which quasi-symmetry can be achieved in practice has remained an open question. Recent work [M. Landreman… read more here.
Keywords: quasi symmetry; symmetry; electromagnetic coils; magnetic fields ... See more keywords
Quasi-symmetry-protected BICs in a double-notched silicon nanodisk metasurface.
Sign Up to like & getrecommendations! Published in 2023 at "Optics letters"
DOI: 10.1364/ol.486552
Abstract: Bound states in the continuum (BICs) hold great promise in enhancing light-matter interaction as they have an infinite Q-factor. To date, the symmetry-protected BIC (SP-BIC) is one of the most intensively studied BICs because it… read more here.
Keywords: symmetry protected; quasi symmetry; protected bics; symmetry ... See more keywords
Advances in Quasi-Symmetry for Square Contingency Tables
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DOI: 10.3390/sym14051051
Abstract: Contingency tables highlight relationships between categorical variables. Typically, the symmetry or marginal homogeneity of a square contingency table is evaluated. The original symmetry model often does not accurately fit a dataset due to its restrictions.… read more here.
Keywords: contingency; quasi symmetry; contingency tables; square contingency ... See more keywords