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Title: RF wave simulation for cold edge plasmas using the MFEM library

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.

Authors:
 [1];  [1];  [1];  [2];  [2];  [3]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Aix-Marseille Univ., and CNRS, Marseille (France)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
OSTI Identifier:
1544361
Grant/Contract Number:  
FC02-99ER54512; FC02-01ER54648; AC52- 07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
EPJ Web of Conferences
Additional Journal Information:
Journal Volume: 157; Conference: 22. Topical Conference on Radio-Frequency Power in Plasmas, Aix-en-Provence (France), 30 May-2 Jun 2017; Journal ID: ISSN 2100-014X
Publisher:
EDP Sciences
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Shiraiwa, S., Wright, J. C., Bonoli, P. T., Kolev, T., Stowell, M., and Hillairet, J. RF wave simulation for cold edge plasmas using the MFEM library. United States: N. p., 2017. Web. doi:10.1051/epjconf/201715703048.
Shiraiwa, S., Wright, J. C., Bonoli, P. T., Kolev, T., Stowell, M., & Hillairet, J. RF wave simulation for cold edge plasmas using the MFEM library. United States. doi:10.1051/epjconf/201715703048.
Shiraiwa, S., Wright, J. C., Bonoli, P. T., Kolev, T., Stowell, M., and Hillairet, J. Mon . "RF wave simulation for cold edge plasmas using the MFEM library". United States. doi:10.1051/epjconf/201715703048. https://www.osti.gov/servlets/purl/1544361.
@article{osti_1544361,
title = {RF wave simulation for cold edge plasmas using the MFEM library},
author = {Shiraiwa, S. and Wright, J. C. and Bonoli, P. T. and Kolev, T. and Stowell, M. and Hillairet, J.},
abstractNote = {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.},
doi = {10.1051/epjconf/201715703048},
journal = {EPJ Web of Conferences},
number = ,
volume = 157,
place = {United States},
year = {2017},
month = {10}
}

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Works referenced in this record:

πScope: Python based scientific workbench with MDSplus data visualization tool
journal, November 2016


Plasma wave simulation based on versatile FEM solver on Alcator C-mod
conference, January 2009

  • Shiraiwa, S.; Meneghini, O.; Parker, R.
  • RADIO FREQUENCY POWER IN PLASMAS: Proceedings of the 18th Topical Conference, AIP Conference Proceedings
  • DOI: 10.1063/1.3273767

Full wave effects on the lower hybrid wave spectrum and driven current profile in tokamak plasmas
journal, August 2011

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  • DOI: 10.1063/1.3609835

Predicting High Harmonic Ion Cyclotron Heating Efficiency in Tokamak Plasmas
journal, September 2011


Coupling an ICRF core spectral solver to an edge FEM code
conference, January 2015

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  • RADIO FREQUENCY POWER IN PLASMAS: Proceedings of the 21st Topical Conference, AIP Conference Proceedings
  • DOI: 10.1063/1.4936495

Full wave simulation of lower hybrid waves in Maxwellian plasma based on the finite element method
journal, September 2009

  • Meneghini, O.; Shiraiwa, S.; Parker, R.
  • Physics of Plasmas, Vol. 16, Issue 9
  • DOI: 10.1063/1.3216548

HIS-TORIC: extending core ICRF wave simulation to include realistic SOL plasmas
journal, July 2017


Numerical simulation of ion cyclotron waves in tokamak plasmas
journal, January 1999