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Please use this identifier to cite or link to this item: http://arks.princeton.edu/ark:/88435/dsp01m326m505b
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dc.contributor.authorNies, Richard-
dc.contributor.authorPaul, Elizabeth J.-
dc.contributor.authorPanici, Dario-
dc.contributor.authorHudson, Stuart R.-
dc.contributor.authorBhattacharjee, Amitava-
dc.date.accessioned2024-03-19T17:28:03Z-
dc.date.available2024-03-19T17:28:03Z-
dc.date.issued2024-
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/dsp01m326m505b-
dc.description.abstractOptimising stellarators for quasisymmetry leads to strongly reduced collisional transport and energetic particle losses compared to unoptimised configurations. Though stellarators with precise quasisymmetry have been obtained in the past, it remains unclear how broad the parameter space is where good quasisymmetry may be achieved. We here study the range of aspect ratio and rotational transform values for which stellarators with excellent quasisymmetry on the boundary can be obtained. A large number of Fourier harmonics is included in the boundary representation, which is made computationally tractable by the use of adjoint methods to enable fast gradient-based optimisation, and by the direct optimisation of vacuum magnetic fields, which converge more robustly compared to solutions from magnetohydrostatics. Several novel configurations are presented, including stellarators with record levels of quasisymmetry on a surface, three field period quasi- axisymmetric stellarators with substantial magnetic shear, and compact quasisymmetric stellarators at low aspect ratios similar to tokamaks.en_US
dc.description.tableofcontentsDESC input files with boundary coefficients for all configurations of the corresponding paper.en_US
dc.language.isoen_USen_US
dc.publisherPrinceton Plasma Physics Laboratory, Princeton Universityen_US
dc.titleExploration of the parameter space of quasisymmetric stellarator vacuum fields through adjoint optimisationen_US
dc.typeDataseten_US
pu.projectgrantnumber31016 G0001 10003086 101-
pu.depositorNies, Richard-
dc.contributor.funderU. S. Department of Energy contract number DE-AC02-09CH11466en_US
dc.contributor.funderU. S. Department of Energy contract number DE-SC0016072en_US
dc.contributor.funderU. S. Department of Energy contract number DE-AC02–76CH0307en_US
dc.contributor.funderSimons Foundation (Hidden Symmetries collaboration)en_US
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