U.S. Department of EnergyOffice of Scientific and Technical Information
Dataset from: "Adjoint methods for quasisymmetry of vacuum fields on a surface"
Abstract
Adjoint methods can speed up stellarator optimisation by providing gradient information more efficiently compared to finite-difference evaluations. Adjoint methods are herein applied to vacuum magnetic fields, with objective functions targeting quasisymmetry and a rotational transform value on a surface. To measure quasisymmetry, a novel way of evaluating approximate flux coordinates on a single flux surface without the assumption of a neighbourhood of flux surfaces is proposed. The shape gradients obtained from the adjoint formalism are evaluated numerically and verified against finite-difference evaluations.
- Authors:
-
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Princeton Plasma Physics Laboratory
- Publication Date:
- DOE Contract Number:
- AC02-09CH11466; SC0016072; AC02-76CH03073
- Research Org.:
- Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
- OSTI Identifier:
- 1891332
- DOI:
- https://doi.org/10.5281/zenodo.5248498
Citation Formats
Nies, Richard. Dataset from: "Adjoint methods for quasisymmetry of vacuum fields on a surface". United States: N. p., 2021.
Web. doi:10.5281/zenodo.5248498.
Nies, Richard. Dataset from: "Adjoint methods for quasisymmetry of vacuum fields on a surface". United States. doi:https://doi.org/10.5281/zenodo.5248498
Nies, Richard. 2021.
"Dataset from: "Adjoint methods for quasisymmetry of vacuum fields on a surface"". United States. doi:https://doi.org/10.5281/zenodo.5248498. https://www.osti.gov/servlets/purl/1891332. Pub date:Tue Aug 24 00:00:00 EDT 2021
@article{osti_1891332,
title = {Dataset from: "Adjoint methods for quasisymmetry of vacuum fields on a surface"},
author = {Nies, Richard},
abstractNote = {Adjoint methods can speed up stellarator optimisation by providing gradient information more efficiently compared to finite-difference evaluations. Adjoint methods are herein applied to vacuum magnetic fields, with objective functions targeting quasisymmetry and a rotational transform value on a surface. To measure quasisymmetry, a novel way of evaluating approximate flux coordinates on a single flux surface without the assumption of a neighbourhood of flux surfaces is proposed. The shape gradients obtained from the adjoint formalism are evaluated numerically and verified against finite-difference evaluations.},
doi = {10.5281/zenodo.5248498},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 24 00:00:00 EDT 2021},
month = {Tue Aug 24 00:00:00 EDT 2021}
}
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