Bootstrap Current Simulations with Experimental LHD Plasma Density and Temperature Profiles, Energy Scattering and Finite Orbit Width

Bootstrap Current Simulations with Experimental LHD Plasma Density and Temperature Profiles, Energy Scattering and Finite Orbit Width

Bootstrap current calculations with the neoclassical SPBSC and VENUS+δf codes have been performed on experimental Large Helical Device (LHD, NIFS, Japan) configurations with different magnetic axis positions and simplified plasma density and temperature profiles. In this paper, we use experimentally...

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Veröffentlicht in:Plasma and Fusion Research 2012/07/26, Vol.7, pp.1403077-1403077
Hauptverfasser: ISAEV, Maxim Yu, WATANABE, Kiyomasa Y., SATAKE, Shinsuke, NAKAMURA, Yuji, COOPER, Wilfred A.
Format: Artikel
Sprache:eng
Schlagworte:
3D numerical orbit
bootstrap current
heliotron
magnetic configuration
neoclassical transport
stellarator
δf method
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Zusammenfassung:Bootstrap current calculations with the neoclassical SPBSC and VENUS+δf codes have been performed on experimental Large Helical Device (LHD, NIFS, Japan) configurations with different magnetic axis positions and simplified plasma density and temperature profiles. In this paper, we use experimentally obtained electron density and temperature profiles for the LHD discharges #61863 and #82582 to compute the corresponding magnetohydrodynamic equilibrium states and collisional frequency. An improved collisional operator has been implemented into the VENUS+δf code. The comparison between the measured LHD bootstrap current and that expected from neoclassical simulations is discussed.
ISSN:1880-6821
1880-6821
DOI:10.1585/pfr.7.1403077