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Theoretical Optimization of Stellarators
IEEE Transactions on Plasma Science, 1981Net current free toroidal ("stellarator") confinement is studied with a combination of several methods: a complete set of analytical vacuum fields for finding favorable vacuum field configurations; three-dimensional MHD codes for finite-s, equilibrium computations; the expansion of a general toroidal equilibrium around its magnetic axis as guideline ...
R. Chodura +5 more
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Physics optimization of stellarators
Physics of Fluids B: Plasma Physics, 1992The theoretical and experimental development of stellarators has removed some of the specific deficiencies of this configuration, viz., the limitations in β, the high neoclassical transport, and the low collisionless confinement of α particles. These optimized stellarators can best be realized with a modular coil system.
Grieger, G. +16 more
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Automated Optimization of Stellarator Coils
Fusion Technology, 1998AbstractA method for finding a set of modular, poloidally closed stellarator coils confining a plasma in a given equilibrium configuration is described. The proposed technique performs a direct nonlinear optimization of the coil shapes with respect both to the desired structure of the magnetic field and to geometric constraints required by the ...
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Transport optimization in stellarators
Physics of Plasmas, 2006A survey of the approaches which have been developed for mitigating transport in stellarators is presented. A primary deficiency of stellarators has been elevated transport levels due to their nonaxisymmetry. Since the early 1980s, stellarator research has addressed this difficulty, developing a range of techniques for reducing transport, both ...
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Optimization of Stellarator Reactor Parameters
Fusion Science and Technology, 2005Four quasi-axisymmetric compact stellarator plasma and coil configurations are analyzed for their potential as reactors. A 0-D (volume-average) approach for optimizing the main reactor parameters allows study of the relationship between global parameters and the compatibility of different constraints for a given power output including plasma-coil ...
J. F. Lyon +4 more
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Optimization of finite-build stellarator coils
Journal of Plasma Physics, 2020Finding coil sets with desirable physics and engineering properties is a crucial step in the design of modern stellarator devices. Existing stellarator coil optimization codes ultimately produce zero-thickness filament coils. However, stellarator coils have finite depth and thickness, which can make the single-filament model a poor approximation ...
Luquant Singh +5 more
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Optimization of the MHH stellarator
Communications on Pure and Applied Mathematics, 1997Summary: The modular Helias-like Heliac (MHH) is a coil configuration selected two years ago for the U.S. stellarator power plant study. Since that time the design has been significantly improved by running a collection of three-dimensional plasma physics codes.
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Stellarator optimization studies in W7-AS
Plasma Physics and Controlled Fusion, 1996Wendelstein 7-AS is the first large-scale modular stellarator, partially optimized with respect to reduced equilibrium currents . It therefore plays an important role for the optimized next step stellarator W7-X as a pilot experiment for manufacturing techniques of coils and vessel and for equilibrium and neo-classical transport properties of the ...
Hofmann, J. +18 more
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