Results 11 to 20 of about 1,911,396 (184)

Global stochastic optimization of stellarator coil configurations [PDF]

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. Orbach, 2008,
Silke Glas, Misha Padidar, Ariel Kellison, David Bindel   +3 more
openaire   +3 more sources

Coil optimization methods for a planar coil stellarator

Nuclear Fusion
The planar coil stellarator design is a novel approach to producing the confining magnetic field of a stellarator plasma. The work presented here details the optimization of the two types of planar coils that are used in the planar coil design: the ...
T.G. Kruger, M.F. Martin, D.A. Gates, the Thea Energy Team   +3 more
doaj   +2 more sources

Integrating novel stellarator single-stage optimization algorithms to design the Columbia stellarator experiment [PDF]

Nuclear Fusion
The 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, E.J. Paul, G. Rawlinson, M. Haque, S.W. Freiberger, S. Thapa   +5 more
doaj   +3 more sources

Stellarator optimization with constraints

Journal of Plasma Physics
In this work we consider the problem of optimizing a stellarator subject to hard constraints on the design variables and physics properties of the equilibrium. We survey current numerical methods for handling these constraints, and summarize a number of methods from the wider optimization community that have not been used extensively for stellarator ...
Rory Conlin, Patrick Kim, Daniel W. Dudt, Dario Panici, Egemen Kolemen   +4 more
openaire   +3 more sources

Magnetic configuration effects on the Wendelstein 7-X stellarator [PDF]

, 2022
855860The two leading concepts for confining high-temperature fusion plasmas are the tokamak and the stellarator. Tokamaks are rotationally symmetric and use a large plasma current to achieve confinement, whereas stellarators are non-axisymmetric and ...
Roscher, H.-J., Keunecke, M., Dinklage, A., et al.   +3 more
core   +6 more sources

Optimizing Stellarators for Turbulent Transport [PDF]

Physical Review Letters, 2010
Up to now, the term "transport-optimized" stellarators has meant optimized to minimize neoclassical transport, while the task of also mitigating turbulent transport, usually the dominant transport channel in such designs, has not been addressed, due to the complexity of plasma turbulence in stellarators.
Mynick, H., Pomphrey, N., Xanthopoulos, P.   +2 more
openaire   +6 more sources

Optimizing stellarator optimization: recent advances in theory and numerics

Stellarators offer exceptional freedom in magnetic geometry, but this freedom turns reactor design into a high-dimensional optimization problem. This talk reviews recent theoretical and numerical developments that make this problem more tractable. I will discuss how confinement properties such as omnigenity, energetic-particle losses and bootstrap ...
Christopher Albert
openaire   +2 more sources

Uncertainty quantification in three‐dimensional magnetohydrodynamic equilibrium reconstruction via surrogate‐assisted Bayesian inference

Contributions to Plasma Physics, Volume 63, Issue 5-6, June-July 2023., 2023
Abstract In three‐dimensional (3D) equilibrium, reconstruction defining parameters of an ideal magneto‐hydrodynamic equilibrium are inferred from a set of plasma diagnostic measurements. For the reconstructed parameters, various forms of uncertainty estimates exist within common 3D reconstruction frameworks.
Robert Köberl, Udo von Toussaint, Hans‐Joachim Bungartz, Jonathan Schilling, Christopher G. Albert, W7‐X Team   +5 more
wiley   +1 more source

Understanding Trade-offs in Stellarator Design with Multi-objective Optimization

, 2023
Dataset for the paper "Understanding Trade-offs in Stellarator Design with Multi-objective Optimization" by David Bindel, Matt Landreman, Misha ...
Landreman, Matt, Padidar, Misha, Bindel, David   +2 more
core   +1 more source

Optimization of M=2 stellarator

, 1997
"Quasi-axisyrnmetric stellarator (QAS) configurations are considered for improvement of high energy reflected particle confinement. A reference QAS configuration with the field period of M = 2 has been obtained by the optimization of the shape of the ...
Nakajima, N., Yokoyama, M., Okamoto, M., Nuhrenberg, J.   +3 more
openaire   +2 more sources