RF wave simulation for cold edge plasmas using the MFEM library

Shiraiwa, S.; Wright, J. C.; Bonoli, P. T.; Kolev, T.; Stowell, M.; Hillairet, J.

doi:10.1051/epjconf/201715703048

RF wave simulation for cold edge plasmas using the MFEM library

Journal Article · Mon Oct 23 00:00:00 EDT 2017 · EPJ Web of Conferences (Online)

DOI:https://doi.org/10.1051/epjconf/201715703048· OSTI ID:1544361

Shiraiwa, S. ^[1]; Wright, J. C. ^[1]; Bonoli, P. T. ^[1]; Kolev, T. ^[2]; Stowell, M. ^[2]; Hillairet, J. ^[3]

Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Aix-Marseille Univ., and CNRS, Marseille (France)

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.

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)

Grant/Contract Number:: AC52-07NA27344; FC02-01ER54648; FC02-99ER54512

OSTI ID:: 1544361

Alternate ID(s):: OSTI ID: 22839116

Journal Information:: EPJ Web of Conferences (Online), Journal Name: EPJ Web of Conferences (Online) Vol. 157; ISSN 2100-014X

Publisher:: EDP SciencesCopyright Statement

Country of Publication:: United States

Language:: English

References (9)

πScope: Python based scientific workbench with MDSplus data visualization tool Shiraiwa, S.; Fredian, T.; Hillairet, J. Fusion Engineering and Design, Vol. 112 https://doi.org/10.1016/j.fusengdes.2016.06.050	journal	November 2016
A post-processing method to simulate the generalized RF sheath boundary condition Myra, James R.; Kohno, Haruhiko EPJ Web of Conferences, Vol. 157 https://doi.org/10.1051/epjconf/201715703037	journal	January 2017
Full wave simulation of lower hybrid waves in Maxwellian plasma based on the finite element method Meneghini, O.; Shiraiwa, S.; Parker, R. Physics of Plasmas, Vol. 16, Issue 9 https://doi.org/10.1063/1.3216548	journal	September 2009
Plasma wave simulation based on versatile FEM solver on Alcator C-mod Shiraiwa, S.; Meneghini, O.; Parker, R. RADIO FREQUENCY POWER IN PLASMAS: Proceedings of the 18th Topical Conference, AIP Conference Proceedings https://doi.org/10.1063/1.3273767	conference	January 2009
Full wave effects on the lower hybrid wave spectrum and driven current profile in tokamak plasmas Shiraiwa, S.; Ko, J.; Meneghini, O. Physics of Plasmas, Vol. 18, Issue 8 https://doi.org/10.1063/1.3609835	journal	August 2011
Coupling an ICRF core spectral solver to an edge FEM code Wright, J. C.; Shiraiwa, S. RADIO FREQUENCY POWER IN PLASMAS: Proceedings of the 21st Topical Conference, AIP Conference Proceedings https://doi.org/10.1063/1.4936495	conference	January 2015
Numerical simulation of ion cyclotron waves in tokamak plasmas Brambilla, M. Plasma Physics and Controlled Fusion, Vol. 41, Issue 1 https://doi.org/10.1088/0741-3335/41/1/002	journal	January 1999
HIS-TORIC: extending core ICRF wave simulation to include realistic SOL plasmas Shiraiwa, S.; Wright, J. C.; Lee, J. P. Nuclear Fusion, Vol. 57, Issue 8 https://doi.org/10.1088/1741-4326/aa7b18	journal	July 2017
Predicting High Harmonic Ion Cyclotron Heating Efficiency in Tokamak Plasmas Green, D. L.; Berry, L. A.; Chen, G. Physical Review Letters, Vol. 107, Issue 14 https://doi.org/10.1103/PhysRevLett.107.145001	journal	September 2011

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Scalability Analysis of Direct and Iterative Solvers Used to Model Charging of Non-insulated Superconducting Pancake Solenoids Mohebujjaman, M.; Shiraiwa, S.; LaBombard, B. arXiv https://doi.org/10.48550/arxiv.2007.15410	preprint	January 2020
A high field side multijunction launcher with aperture impedance matching for lower hybrid current drive in DIII-D advanced tokamak plasmas Seltzman, A. H.; Shiraiwa, S.; Wallace, G. M. Nuclear Fusion, Vol. 59, Issue 9 https://doi.org/10.1088/1741-4326/ab22c8	journal	July 2019

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