Energetic particle optimization of quasi-axisymmetric stellarator equilibria
Nuclear Fusion, 2022 An important goal of stellarator optimization is to achieve good confinement of energetic particles such as, in the case of a reactor, alphas created by deuterium–tritium fusion. In this work, a fixed-boundary stellarator equilibrium was re-optimized for
Alexandra LeViness +6 more
doaj +3 more sources
Integrating novel stellarator single-stage optimization algorithms to design the Columbia stellarator experiment [PDF]
Nuclear FusionThe Columbia Stellarator eXperiment (CSX), currently being designed at Columbia University, aims to test theoretical predictions related to QA plasma behavior, and to pioneer the construction of an optimized stellarator using three-dimensional, non ...
A. Baillod +5 more
doaj +5 more sources
An adjoint method for neoclassical stellarator optimization [PDF]
Journal of Plasma Physics, 2018 Stellarators are a promising route to steady-state fusion power. However, to achieve the required confinement, the magnetic geometry must be highly optimized.
E. Paul +3 more
semanticscholar +5 more sources
Efficient single-stage optimization of islands in finite-β stellarator equilibria [PDF]
Physics of PlasmasWe present single-stage optimization of islands in finite-β stellarator equilibria. Stellarator optimization is traditionally performed as a two-stage process; in the first stage, an optimal equilibrium is calculated that balances a set of competing ...
J Loizu, A Baillod, C B Smiet
exaly +4 more sources
Direct optimization of neoclassical ion transport in stellarator reactors [PDF]
Nuclear FusionWe directly optimize stellarator neoclassical ion transport while holding neoclassical electron transport at a moderate level, creating a scenario favorable for impurity expulsion and retaining good ion confinement.
B.F. Lee +4 more
doaj +4 more sources
Understanding trade-offs in stellarator design with multi-objective optimization [PDF]
Journal of Plasma Physics, 2023 In designing stellarators, any design decision ultimately comes with a trade-off. Improvements in particle confinement, for instance, may increase the burden on engineers to build more complex coils, and the tightening of financial constraints may ...
D. Bindel, M. Landreman, M. Padidar
semanticscholar +4 more sources
The DESC stellarator code suite Part 3: Quasi-symmetry optimization [PDF]
Journal of Plasma Physics, 2022 The DESC stellarator optimization code takes advantage of advanced numerical methods to search the full parameter space much faster than conventional tools.
Daniel W. Dudt +3 more
semanticscholar +3 more sources
Direct stellarator coil design using global optimization: application to a comprehensive exploration of quasi-axisymmetric devices [PDF]
Journal of Plasma Physics, 2023 Many stellarator coil design problems are plagued by multiple minima, where the locally optimal coil sets can sometimes vary substantially in performance.
A. Giuliani
semanticscholar +3 more sources
Stellarator optimization for nested magnetic surfaces at finite β and toroidal current [PDF]
Physics of Plasmas, 2021 Good magnetic surfaces, as opposed to magnetic islands and chaotic field lines, are generally desirable for stellarators. In previous work, Landreman et al. [Phys.
A. Baillod +3 more
semanticscholar +2 more sources
Global stochastic optimization of stellarator coil configurations
Journal of Plasma Physics, 2022 In the construction of a stellarator, the manufacturing and assembling of the coil system is a dominant cost. These coils need to satisfy strict engineering tolerances, and if those are not met the project could be cancelled as in the case of the National Compact Stellarator Experiment (NCSX) project (R.L.
Silke Glas +3 more
openaire +3 more sources