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RF wave simulation for cold edge plasmas using the MFEM library

Author(s)
Kolev, T.; Stowell, M.; Shiraiwa, Shunichi; Wright, John C; Bonoli, Paul T
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Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0
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Abstract
A newly developed generic electro-magnetic (EM) simulation tool for modeling RF wave propagation in SOL plasmas is presented. The primary motivation of this development is to extend the domain partitioning approach for incorporating arbitrarily shaped SOL plasmas and antenna to the TORIC core ICRF solver, which was previously demonstrated in the 2D geometry [S. Shiraiwa, et. al., "HISTORIC: extending core ICRF wave simulation to include realistic SOL plasmas", Nucl. Fusion in press], to larger and more complicated simulations by including a 3D realistic antenna and integrating RF rectified sheath potential model. Such an extension requires a scalable high fidelity 3D edge plasma wave simulation. We used the MFEM [http://mfem.org] , open source scalable C++ finite element method library, and developed a Python wrapper for MFEM (PyMFEM), and then a radio frequency (RF) wave physics module in Python. This approach allows for building a physics layer rapidly, while separating the physics implementation being apart from the numerical FEM implementation. An interactive modeling interface was built on pScope [S Shiraiwa, et. al. Fusion Eng. Des. 112, 835] to work with an RF simulation model in a complicated geometry.
Date issued
2017-10
URI
http://hdl.handle.net/1721.1/113307
Department
Massachusetts Institute of Technology. Plasma Science and Fusion Center
Journal
EPJ Web of Conferences
Publisher
EDP Sciences
Citation
Shiraiwa, S. et al. “RF Wave Simulation for Cold Edge Plasmas Using the MFEM Library.” Edited by J. Hillairet. EPJ Web of Conferences 157 (2017): 03048 © 2017 The Authors, published by EDP Sciences
Version: Final published version
ISSN
2100-014X

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