Moment approach to the bootstrap current in nonaxisymmetric toroidal plasmas using {delta}f Monte Carlo methods

Journal Article · Fri May 15 04:00:00 EDT 2009 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3121223· OSTI ID:21277084

Matsuyama, A ^[1]; Isaev, M Yu ^[2]; Watanabe, K Y; Suzuki, Y; Nakajima, N ^[3]; Hanatani, K ^[4]; Cooper, W A; Tran, T M ^[5]

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1. Graduate School of Energy Science, Kyoto University, Gokasho, Uji, Kyoto 611-0011 (Japan)
2. Nuclear Fusion Institute, RRC Kurchatov Institute, 123182 Moscow (Russian Federation)
3. National Institute for Fusion Science, Toki, Gifu 509-5292 (Japan)
4. Institute of Advanced Energy, Kyoto University, Gokasho, Uji, Kyoto 611-0011 (Japan)
5. Centre de Recherches en Physique des Plasmas, Association Euratom-Suisse, Ecole Polytechnique Federale de Lausanne, CH1015 Lausanne (Switzerland)

To evaluate the bootstrap current in nonaxisymmetric toroidal plasmas quantitatively, a {delta}f Monte Carlo method is incorporated into the moment approach. From the drift-kinetic equation with the pitch-angle scattering collision operator, the bootstrap current and neoclassical conductivity coefficients are calculated. The neoclassical viscosity is evaluated from these two monoenergetic transport coefficients. Numerical results obtained by the {delta}f Monte Carlo method for a model heliotron are in reasonable agreement with asymptotic formulae and with the results obtained by the variational principle.

• OSTI ID: 21277084
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 16; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BOOTSTRAP CURRENT
HELIOTRON
KINETIC EQUATIONS
MOMENTS METHOD
MONTE CARLO METHOD
PLASMA
VARIATIONAL METHODS