Neutral transport analysis in a non-axisymmetric plasma confining system based on a Monte-Carlo simulation

被引:4
作者
Nakashima, Y. [1 ]
Higashizono, I. [1 ]
Kobayashi, S. [2 ]
Yabutani, H. [3 ]
Shoji, M. [4 ]
Mizuuchi, T. [2 ]
Nagasaki, K. [2 ]
Okada, H. [2 ]
Sano, R. [2 ]
Kondo, K. [3 ]
Kawano, H. [1 ]
Cho, T. [1 ]
机构
[1] Univ Tsukuba, Plasma Res Ctr, Tsukuba, Ibaraki 3058577, Japan
[2] Kyoto Univ, Inst Adv Energy, Uji 6110011, Japan
[3] Kyoto Univ, Grad Sch Energy Sci, Uji 6110011, Japan
[4] Natl Inst Nat Sci, Natl Inst Fus Sci, Toki, Gifu 5095292, Japan
关键词
neutral transport; Monte-Carlo simulation; heliotron; DEGAS;
D O I
10.1002/ctpp.200810025
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Transport of neutral particles in a non-axisymmetric plasma device is described based on a Monte-Carlo simulation and of D alpha line-emission measurements. DEGAS three-dimensional (3-D) Monte-Carlo code for neutral transport simulation has been applied to a helical-axis heliotron device, Heliotron J. In a whole area of Heliotron J vacuum vessel, a detailed 3-D mesh structure for the simulation was constructed especially for the precise investigation of particle transport in the toroidal direction. In this mesh model, a carbon target is also modeled in the simulation space, and the simulation has been carried out for the target insertion experiments in Heliotron J. Simulation results were compared with the results obtained from two-dimensional image captured with a CCD camera viewing the top surface of the carbon target. The compared results indicated that the particle source caused by the carbon target is thought to be much more localized than expected one from the D alpha image around the target. Particle transport to the toroidal direction was also discussed based on the 3-D simulation. (c) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码:141 / 146
页数:6
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