Modeling of resistive plasma response in toroidal geometry using an asymptotic matching approach
Abstract
The method of solving the linear resistive plasma response, based on the asymptotic matching approach, is developed for full toroidal tokamaks by upgrading the resistive DCON code [A. H. Glasser, Z. R. Wang, and J.-K. Park, Phys. Plasmas 23, 112506 (2016)]. The derived matching matrix, asymptotically matching the outer and inner regions, indicates that the applied three dimension (3-D) magnetic perturbations contribute additional small solutions at each resonant surface due to the toroidal coupling of poloidal modes. In contrast, the resonant harmonic only affects the corresponding resonant surface in the cylindrical plasma. Additionally, the solution of the ideal outer region is critical to the asymptotic matching and is challenging in toroidal geometry due to the singular power series solution at the resonant surfaces. Thus, a systematic verification of the outer region Δ' matrix is made by reproducing the well-known analytical Δ' result in Furth et al. [Phys. Fluids 16, 1054–1063 (1073)] and by making a quantitative benchmark with the PEST3 code [A. Pletzer and R. L. Dewar, J. Plasma Phys. 45, 427–451 (1991)]. Finally, the reconstructed numerical solution of the resistive plasma response from the toroidal matching matrix is presented. Compared with the ideal plasma response, the global structure ofmore »
- Authors:
-
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Fusion Theory and Computation, Inc., Kingston, WA (United States)
- Princeton Univ., NJ (United States)
- General Atomics, San Diego, CA (United States)
- Publication Date:
- Research Org.:
- Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- OSTI Identifier:
- 1819056
- Alternate Identifier(s):
- OSTI ID: 1970623
- Grant/Contract Number:
- AC02-09CH11466
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 27; Journal Issue: 12; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; plasma confinement; dimensional analysis; functions and functionals; finite-element analysis; power series; tokamaks; plasma instabilities; control theory
Citation Formats
Wang, Zhirui, Glasser, Alan H., Brennan, Dylan, Liu, Yueqiang, and Park, Jongkyu. Modeling of resistive plasma response in toroidal geometry using an asymptotic matching approach. United States: N. p., 2020.
Web. doi:10.1063/5.0020010.
Wang, Zhirui, Glasser, Alan H., Brennan, Dylan, Liu, Yueqiang, & Park, Jongkyu. Modeling of resistive plasma response in toroidal geometry using an asymptotic matching approach. United States. https://doi.org/10.1063/5.0020010
Wang, Zhirui, Glasser, Alan H., Brennan, Dylan, Liu, Yueqiang, and Park, Jongkyu. Tue .
"Modeling of resistive plasma response in toroidal geometry using an asymptotic matching approach". United States. https://doi.org/10.1063/5.0020010. https://www.osti.gov/servlets/purl/1819056.
@article{osti_1819056,
title = {Modeling of resistive plasma response in toroidal geometry using an asymptotic matching approach},
author = {Wang, Zhirui and Glasser, Alan H. and Brennan, Dylan and Liu, Yueqiang and Park, Jongkyu},
abstractNote = {The method of solving the linear resistive plasma response, based on the asymptotic matching approach, is developed for full toroidal tokamaks by upgrading the resistive DCON code [A. H. Glasser, Z. R. Wang, and J.-K. Park, Phys. Plasmas 23, 112506 (2016)]. The derived matching matrix, asymptotically matching the outer and inner regions, indicates that the applied three dimension (3-D) magnetic perturbations contribute additional small solutions at each resonant surface due to the toroidal coupling of poloidal modes. In contrast, the resonant harmonic only affects the corresponding resonant surface in the cylindrical plasma. Additionally, the solution of the ideal outer region is critical to the asymptotic matching and is challenging in toroidal geometry due to the singular power series solution at the resonant surfaces. Thus, a systematic verification of the outer region Δ' matrix is made by reproducing the well-known analytical Δ' result in Furth et al. [Phys. Fluids 16, 1054–1063 (1073)] and by making a quantitative benchmark with the PEST3 code [A. Pletzer and R. L. Dewar, J. Plasma Phys. 45, 427–451 (1991)]. Finally, the reconstructed numerical solution of the resistive plasma response from the toroidal matching matrix is presented. Compared with the ideal plasma response, the global structure of the response can be affected by the small finite island at the resonant surfaces.},
doi = {10.1063/5.0020010},
journal = {Physics of Plasmas},
number = 12,
volume = 27,
place = {United States},
year = {Tue Dec 01 00:00:00 EST 2020},
month = {Tue Dec 01 00:00:00 EST 2020}
}
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