A post-processing method to simulate the generalized RF sheath boundary condition
Abstract
For applications of ICRF power in fusion devices, control of RF sheath interactions is of great importance. A sheath boundary condition (SBC) was previously developed to provide an effective surface impedance for the interaction of the RF sheath with the waves. The SBC enables the surface power flux and rectified potential energy available for sputtering to be calculated. For legacy codes which cannot easily implement the SBC, or to speed convergence in codes which do implement it, we consider here an approximate method to simulate SBCs by post-processing results obtained using other, e.g. conducting wall, boundary conditions. The basic approximation is that the modifications resulting from the generalized SBC are driven by a fixed incoming wave which could be either a fast wave or a slow wave. Finally, the method is illustrated in slab geometry and compared with exact numerical solutions; it is shown to work very well.
- Authors:
-
- Lodestar Research Corporation, Boulder, CO (United States)
- Kyushu Inst. of Technology, Iizuka, Fukuoka (Japan)
- Publication Date:
- Research Org.:
- Lodestar Research Corp., Boulder, CO (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- OSTI Identifier:
- 1406115
- Report Number(s):
- DOE-ER/-54392-87; DOE-ER/-54823-20; LRC-17-171
Journal ID: ISSN 2100-014X; PII: epjconf_rfppc2017_03037
- Grant/Contract Number:
- FG02-97ER54392
- Resource Type:
- Accepted Manuscript
- Journal Name:
- EPJ Web of Conferences (Online)
- Additional Journal Information:
- Journal Name: EPJ Web of Conferences (Online); Journal Volume: 157; Related Information: https://doi.org/10.5281/zenodo.579548; Journal ID: ISSN 2100-014X
- Publisher:
- EDP Sciences
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; radio-frequency; sheaths; magnetic fusion
Citation Formats
Myra, James R., and Kohno, Haruhiko. A post-processing method to simulate the generalized RF sheath boundary condition. United States: N. p., 2017.
Web. doi:10.1051/epjconf/201715703037.
Myra, James R., & Kohno, Haruhiko. A post-processing method to simulate the generalized RF sheath boundary condition. United States. https://doi.org/10.1051/epjconf/201715703037
Myra, James R., and Kohno, Haruhiko. Mon .
"A post-processing method to simulate the generalized RF sheath boundary condition". United States. https://doi.org/10.1051/epjconf/201715703037. https://www.osti.gov/servlets/purl/1406115.
@article{osti_1406115,
title = {A post-processing method to simulate the generalized RF sheath boundary condition},
author = {Myra, James R. and Kohno, Haruhiko},
abstractNote = {For applications of ICRF power in fusion devices, control of RF sheath interactions is of great importance. A sheath boundary condition (SBC) was previously developed to provide an effective surface impedance for the interaction of the RF sheath with the waves. The SBC enables the surface power flux and rectified potential energy available for sputtering to be calculated. For legacy codes which cannot easily implement the SBC, or to speed convergence in codes which do implement it, we consider here an approximate method to simulate SBCs by post-processing results obtained using other, e.g. conducting wall, boundary conditions. The basic approximation is that the modifications resulting from the generalized SBC are driven by a fixed incoming wave which could be either a fast wave or a slow wave. Finally, the method is illustrated in slab geometry and compared with exact numerical solutions; it is shown to work very well.},
doi = {10.1051/epjconf/201715703037},
journal = {EPJ Web of Conferences (Online)},
number = ,
volume = 157,
place = {United States},
year = {Mon Oct 23 00:00:00 EDT 2017},
month = {Mon Oct 23 00:00:00 EDT 2017}
}
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Works referenced in this record:
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Works referencing / citing this record:
Radio-frequency wave interactions with a plasma sheath in oblique-angle magnetic fields using a sheath impedance model
journal, February 2019
- Kohno, H.; Myra, J. R.
- Physics of Plasmas, Vol. 26, Issue 2
Calculation of RF sheath properties from surface wave-fields: a post-processing method
journal, July 2019
- Myra, J. R.; Kohno, H.
- Plasma Physics and Controlled Fusion, Vol. 61, Issue 9
Radio-frequency wave interactions with a plasma sheath in oblique-angle magnetic fields using a sheath impedance model
text, January 2018
- Kohno, H.; Myra, J. R.
- Zenodo