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Title: Comparative collisionless alpha particle confinement in stellarator reactors with the XGC gyrokinetic code

Abstract

Whole volume simulations of stellarators are necessary to address a number of important physics and engineering issues, including turbulent transport prediction and optimising divertor operation. In this work, advances in development of a whole volume stellarator capability for the global gyrokinetic particle-in-cell code XGC are detailed. A 3D interpolation of the equilibrium magnetic eld to the last close flux surface, calculated using the VMEC ideal magnetohydrodynamic equilibrum code, has been implemented. Orbit tracing with the XGC code is verified for the Wendelstein 7-X stellarator by comparison with the BEAMS3D and EUTERPE codes. The XGC stellarator version has then been used to consider collisionless alpha particle con nement in representative quasi-isodynamic and quasi-axisymmetric designs. It has been shown that, at least without further optimisation for energetic particle confinement, the Wendelstein 7-X-like quasi-isodynamic reactor design exhibits better alpha particle confinement.

Authors:
 [1]; ORCiD logo [1];  [2]; ORCiD logo [1];  [3];  [1]; ORCiD logo [1]
  1. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  2. National Inst. for Fusion Science, Toki (Japan)
  3. Max Planck Inst. for Plasma Physics, Greifswald (Germany)
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1503002
Alternate Identifier(s):
OSTI ID: 1501727
Grant/Contract Number:  
AC02-09CH11466
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 26; Journal Issue: 3; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Cole, M. D. J., Hager, R., Moritaka, T., Lazerson, S., Kleiber, R., Ku, S., and Chang, C. S. Comparative collisionless alpha particle confinement in stellarator reactors with the XGC gyrokinetic code. United States: N. p., 2019. Web. doi:10.1063/1.5085349.
Cole, M. D. J., Hager, R., Moritaka, T., Lazerson, S., Kleiber, R., Ku, S., & Chang, C. S. Comparative collisionless alpha particle confinement in stellarator reactors with the XGC gyrokinetic code. United States. doi:10.1063/1.5085349.
Cole, M. D. J., Hager, R., Moritaka, T., Lazerson, S., Kleiber, R., Ku, S., and Chang, C. S. Tue . "Comparative collisionless alpha particle confinement in stellarator reactors with the XGC gyrokinetic code". United States. doi:10.1063/1.5085349.
@article{osti_1503002,
title = {Comparative collisionless alpha particle confinement in stellarator reactors with the XGC gyrokinetic code},
author = {Cole, M. D. J. and Hager, R. and Moritaka, T. and Lazerson, S. and Kleiber, R. and Ku, S. and Chang, C. S.},
abstractNote = {Whole volume simulations of stellarators are necessary to address a number of important physics and engineering issues, including turbulent transport prediction and optimising divertor operation. In this work, advances in development of a whole volume stellarator capability for the global gyrokinetic particle-in-cell code XGC are detailed. A 3D interpolation of the equilibrium magnetic eld to the last close flux surface, calculated using the VMEC ideal magnetohydrodynamic equilibrum code, has been implemented. Orbit tracing with the XGC code is verified for the Wendelstein 7-X stellarator by comparison with the BEAMS3D and EUTERPE codes. The XGC stellarator version has then been used to consider collisionless alpha particle con nement in representative quasi-isodynamic and quasi-axisymmetric designs. It has been shown that, at least without further optimisation for energetic particle confinement, the Wendelstein 7-X-like quasi-isodynamic reactor design exhibits better alpha particle confinement.},
doi = {10.1063/1.5085349},
journal = {Physics of Plasmas},
number = 3,
volume = 26,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
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This content will become publicly available on March 19, 2020
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