Self-consistent simulation of resistive kink instabilities with runaway electrons
Abstract
A new fluid model for runaway electron simulation based on fluid description is introduced and implemented in the magnetohydrodynamics code M3D-C1, which includes self-consistent interactions between plasma and runaway electrons. The model utilizes the method of characteristics to solve the continuity equation for the runaway electron density with large convection speed, and uses a modified Boris algorithm for pseudo particle pushing. The model was employed to simulate magnetohydrodynamics instabilities happening in a runaway electron final loss event in the DIII-D tokamak. Nonlinear simulation reveals that a large fraction of runaway electrons get lost to the wall when kink instabilities are excited and form stochastic field lines in the outer region of the plasma. Plasma current converts from runaway electron current to Ohmic current, and get pinched at the magnetic axis. Here, given the good agreement with experiment, the simulation model provides a reliable tool to study macroscopic plasma instabilities in existence of runaway electron current, and can be used to support future studies of runaway electron mitigation strategies in ITER.
- Authors:
-
[1];
[1];
[2];
[3];
[3]
- Princeton Univ., NJ (United States)
- Columbia Univ., New York, NY (United States)
- General Atomics, San Diego, CA (United States)
- Publication Date:
- Research Org.:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
- OSTI Identifier:
- 1823075
- Grant/Contract Number:
- AC02-09CH11466; FC02-04ER54698; SC0016268; SC0018109; AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Plasma Physics and Controlled Fusion
- Additional Journal Information:
- Journal Volume: 63; Journal Issue: 12; Journal ID: ISSN 0741-3335
- Publisher:
- IOP Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Liu, Chang, Zhao, Chen, Jardin, Stephen C., Ferraro, N., Paz-Soldan, Carlos, Liu, Yueqiang, and Lyons, Brendan C. Self-consistent simulation of resistive kink instabilities with runaway electrons. United States: N. p., 2021.
Web. doi:10.1088/1361-6587/ac2af8.
Liu, Chang, Zhao, Chen, Jardin, Stephen C., Ferraro, N., Paz-Soldan, Carlos, Liu, Yueqiang, & Lyons, Brendan C. Self-consistent simulation of resistive kink instabilities with runaway electrons. United States. https://doi.org/10.1088/1361-6587/ac2af8
Liu, Chang, Zhao, Chen, Jardin, Stephen C., Ferraro, N., Paz-Soldan, Carlos, Liu, Yueqiang, and Lyons, Brendan C. Mon .
"Self-consistent simulation of resistive kink instabilities with runaway electrons". United States. https://doi.org/10.1088/1361-6587/ac2af8. https://www.osti.gov/servlets/purl/1823075.
@article{osti_1823075,
title = {Self-consistent simulation of resistive kink instabilities with runaway electrons},
author = {Liu, Chang and Zhao, Chen and Jardin, Stephen C. and Ferraro, N. and Paz-Soldan, Carlos and Liu, Yueqiang and Lyons, Brendan C.},
abstractNote = {A new fluid model for runaway electron simulation based on fluid description is introduced and implemented in the magnetohydrodynamics code M3D-C1, which includes self-consistent interactions between plasma and runaway electrons. The model utilizes the method of characteristics to solve the continuity equation for the runaway electron density with large convection speed, and uses a modified Boris algorithm for pseudo particle pushing. The model was employed to simulate magnetohydrodynamics instabilities happening in a runaway electron final loss event in the DIII-D tokamak. Nonlinear simulation reveals that a large fraction of runaway electrons get lost to the wall when kink instabilities are excited and form stochastic field lines in the outer region of the plasma. Plasma current converts from runaway electron current to Ohmic current, and get pinched at the magnetic axis. Here, given the good agreement with experiment, the simulation model provides a reliable tool to study macroscopic plasma instabilities in existence of runaway electron current, and can be used to support future studies of runaway electron mitigation strategies in ITER.},
doi = {10.1088/1361-6587/ac2af8},
journal = {Plasma Physics and Controlled Fusion},
number = 12,
volume = 63,
place = {United States},
year = {Mon Nov 15 00:00:00 EST 2021},
month = {Mon Nov 15 00:00:00 EST 2021}
}
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