Stellarator optimization with constraints

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...

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Bibliographic Details
Published inJournal of plasma physics Vol. 90; no. 5
Main Authors Conlin, Rory, Kim, Patrick, Dudt, Daniel W., Panici, Dario, Kolemen, Egemen
Format Journal Article
LanguageEnglish
Published Cambridge, UK Cambridge University Press 22.10.2024
Subjects
Constraints
Current sources
Design optimization
Equilibrium
fusion plasma
Inequality
Numerical methods
Optimization
Physics
Plasma
plasma confinement
plasma simulation
Stellarators
plasma confinement
plasma simulation
fusion plasma
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ISSN0022-3778
1469-7807
1469-7807
DOI10.1017/S0022377824000655

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Summary: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 optimization thus far. We demonstrate the utility of new methods of constrained optimization by optimizing a quasi-axisymmetric stellarator for favourable physics properties while preventing strong shaping of the plasma boundary, which can be difficult to create with external current sources.
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USDOE
USDOE Office of Science (SC)
SC0022005; AC02-09CH11466; FWP 1019; Field Work Proposal No. 1019
ISSN:0022-3778
1469-7807
1469-7807
DOI:10.1017/S0022377824000655