U.S. Department of EnergyOffice of Scientific and Technical Information
Inputs and Outputs for paper "The DESC stellarator code suite. Part 1. Quick and accurate equilibria computations"
Abstract
Contains the DESC and VMEC input and output files used in the paper, as well as the plotting scripts used to create the figures in the paper (Current with the arXiv Mar 31 2022 version, https://arxiv.org/abs/2203.17173v1): 3D equilibrium codes are vital for stellarator design and operation, and high-accuracy equilibria are also necessary for stability studies. This paper details comparisons of two 3D equilibrium codes, VMEC, which uses a steepest-descent algorithm to reach a minimum-energy plasma state, and DESC, which minimizes the MHD force error in real space directly. Accuracy as measured by final plasma energy and satisfaction of MHD force balance, as well as other metrics, will be presented for each code, along with the computation time. It is shown that DESC is able to achieve more accurate solutions, especially near-axis. DESC's global Fourier-Zernike basis also yields the solution everywhere in the plasma volume, not just on discrete flux surfaces. Further, DESC can compute the same accuracy solution as VMEC in an order of magnitude less time.
- Authors:
-
;
;
;
;
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); PPPL
- Princeton Univ., NJ (United States)
- Publication Date:
- DOE Contract Number:
- AC02-09CH11466; SC0022005
- Research Org.:
- Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; fusion plasma; plasma confinement; plasma simulation
- OSTI Identifier:
- 1897994
- DOI:
- https://doi.org/10.5281/zenodo.6539681
Citation Formats
Panici, Dario, Conlin, Rory, Dudt, David W., Unalmis, K., and Kolemen, Egemen. Inputs and Outputs for paper "The DESC stellarator code suite. Part 1. Quick and accurate equilibria computations". United States: N. p., 2022.
Web. doi:10.5281/zenodo.6539681.
Panici, Dario, Conlin, Rory, Dudt, David W., Unalmis, K., & Kolemen, Egemen. Inputs and Outputs for paper "The DESC stellarator code suite. Part 1. Quick and accurate equilibria computations". United States. doi:https://doi.org/10.5281/zenodo.6539681
Panici, Dario, Conlin, Rory, Dudt, David W., Unalmis, K., and Kolemen, Egemen. 2022.
"Inputs and Outputs for paper "The DESC stellarator code suite. Part 1. Quick and accurate equilibria computations"". United States. doi:https://doi.org/10.5281/zenodo.6539681. https://www.osti.gov/servlets/purl/1897994. Pub date:Thu Mar 31 00:00:00 EDT 2022
@article{osti_1897994,
title = {Inputs and Outputs for paper "The DESC stellarator code suite. Part 1. Quick and accurate equilibria computations"},
author = {Panici, Dario and Conlin, Rory and Dudt, David W. and Unalmis, K. and Kolemen, Egemen},
abstractNote = {Contains the DESC and VMEC input and output files used in the paper, as well as the plotting scripts used to create the figures in the paper (Current with the arXiv Mar 31 2022 version, https://arxiv.org/abs/2203.17173v1): 3D equilibrium codes are vital for stellarator design and operation, and high-accuracy equilibria are also necessary for stability studies. This paper details comparisons of two 3D equilibrium codes, VMEC, which uses a steepest-descent algorithm to reach a minimum-energy plasma state, and DESC, which minimizes the MHD force error in real space directly. Accuracy as measured by final plasma energy and satisfaction of MHD force balance, as well as other metrics, will be presented for each code, along with the computation time. It is shown that DESC is able to achieve more accurate solutions, especially near-axis. DESC's global Fourier-Zernike basis also yields the solution everywhere in the plasma volume, not just on discrete flux surfaces. Further, DESC can compute the same accuracy solution as VMEC in an order of magnitude less time.},
doi = {10.5281/zenodo.6539681},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Mar 31 00:00:00 EDT 2022},
month = {Thu Mar 31 00:00:00 EDT 2022}
}