Results 121 to 130 of about 161 (152)
Some of the next articles are maybe not open access.
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 ...
openaire +1 more source
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
openaire +1 more source
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.
openaire +2 more sources
Stellar Mesh Simplification Using Probabilistic Optimization
Computer Graphics Forum, 2004AbstractThis paper proposes the stellar mesh simplification method, a fast implementation of the Four‐Face Cluster (FFC) algorithm. In this method, a probabilistic optimization heuristic substitutes the priority queue of the original method, which results in a 40% faster algorithm with the same order of distortion. It extends naturally to a progressive
Antônio Wilson Vieira +4 more
openaire +1 more source
Optimization of energy confinement in the 1/ν regime for stellarators
Journal of Computational Physics, 2008For certain conditions the stellarator magnetic field can be originally obtained in the real space coordinates and there is no necessity in its transformation to magnetic coordinates. A procedure working in real space coordinates is presented for maximizing the plasma energy content, based on reducing the most unfavorable \(1/\nu\) neoclassical ...
Bernhard Seiwald +6 more
openaire +1 more source
The theoretical basis of a drift-optimized stellarator reactor
Plasma Physics and Controlled Fusion, 1993The stellarator is a 3-dimensional toroidal configuration without induced toroidal plasma currents. The magnetic field is produced by external coils which allows steady-state operation of a stellarator reactor. The requirements coming from reactor conditions narrow the range of potential stellarator configurations as reactor candidates; therefore an ...
openaire +3 more sources
Turbulent and Collisional Transport in Optimized Stellarators
2020The stellarator is a fusion energy concept that relies on fully three-dimensional shaping of magnetic fields to confine particles. Stellarators have many favorable properties, including, but not limited to, the ability to operate in steady-state, many optimizable degrees of freedom, and no strict upper limit on the plasma density.
openaire +2 more sources
Some results of stellarator optimization
2015The collisionless confinement of all reflected particles with orbits that star within the inner half of the plasma of a stellarator with the poloidal direction of the contours of the magnetic field strenght B is shown computationally to be possible. It is also demonstrated that the confinement achieved is well compatible with the fulfilment of Mercier ...
Mikhailov, M.I. +17 more
openaire +1 more source
Single-stage gradient-based stellarator coil design: Optimization for near-axis quasi-symmetry
Journal of Computational Physics, 2022Georg Stadler +2 more
exaly