Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Katsuji Ichiguchi"'
Autor:
Yasuhiro Suzuki, Satoru Sakakibara, L.E. Sugiyama, Katsumi Ida, Y. Takemura, Katsuji Ichiguchi, Benjamin A. Carreras, Yasushi Todo, Masayasu Sato
Publikováno v:
Citation K. Ichiguchi et al 2021 Nucl. Fusion 61 126056
A transition from an interchange mode to a non-resonant mode is found in the nonlinear magnetohydrodynamic simulation for the partial collapse in a large helical device (LHD) plasma with a net toroidal current. This transition can occur when the magn
Autor:
Shinsuke Satake, H. Yamaguchi, Takuya Goto, Junichi Miyazawa, Katsuji Ichiguchi, Hitoshi Tamura, Nagato Yanagi
Publikováno v:
Plasma and Fusion Research. 16:1405085
The effect of the pitch modulation of the helical coils on the core plasma performance of the LHD-type helical fusion reactor has been examined. The analysis of the MHD stability and neoclassical transport for the pitch modulation α = 0.0 and 0.1 ha
A simulated annealing (SA) relaxation method is used for calculation of high-beta reduced magnetohydrodynamics (MHD) equilibria in toroidal geometry. The SA method, based on artificial dynamics derived from the MHD Hamiltonian structure, is used to c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0d30a694a0fd9cb8c6a5fb61f18d691
http://arxiv.org/abs/1805.00172
http://arxiv.org/abs/1805.00172
Autor:
Katsuji Ichiguchi, Yasuhiro Suzuki
Publikováno v:
Plasma and Fusion Research. 14:3403100-3403100
The effects of the deformation of the flux surfaces into a “D shape” on vacuum heliotron configurations are examined numerically. In this study, one poloidal coil on the mid plane just inside the helical coils is assumed to be installed so that t
Autor:
Katsuji Ichiguchi, T. Nicolas
Publikováno v:
Nuclear Fusion
Nuclear Fusion, IOP Publishing, 2016, 56 (2), pp.026008. ⟨10.1088/0029-5515/56/2/026008⟩
Nuclear Fusion, IOP Publishing, 2016, 56 (2), pp.026008. ⟨10.1088/0029-5515/56/2/026008⟩
The results of a reduced magnetohydrodynamic model for the interchange mode in a stellarator are reported. The model is based on Strauss equations, with the addition of resistivity, viscosity and perpendicular heat conductivity on the one hand, and i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f242eb3436e9352d9ecc291df90a38cd
https://hal.archives-ouvertes.fr/hal-02387231
https://hal.archives-ouvertes.fr/hal-02387231
Autor:
Katsuji Ichiguchi, T. Nicolas, Motoyasu Sato, Yasushi Todo, Yasuhiro Suzuki, Yoshiro Narushima, Satoru Sakakibara, Benjamin A. Carreras, Satoshi Ohdachi
Publikováno v:
Nuclear Fusion
Nuclear Fusion, IOP Publishing, 2015, 55 (7), pp.073023. ⟨10.1088/0029-5515/55/7/073023⟩
Nuclear Fusion, IOP Publishing, 2015, 55 (7), pp.073023. ⟨10.1088/0029-5515/55/7/073023⟩
The interaction between pressure driven modes and magnetic islands generated by a resonant magnetic perturbation (RMP) in the large helical device (LHD) is numerically analyzed. In this analysis, three-dimensional treatment is essential in the equili
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea821ce97f91dc27b294a4eafde46e5c
https://hal.archives-ouvertes.fr/hal-02387225
https://hal.archives-ouvertes.fr/hal-02387225
Autor:
Katsuji Ichiguchi, Ming-Sheng Chu
Publikováno v:
Nuclear Fusion. 45:804-813
The formulation of a method for the systematic computation of the growth rate of the weakly unstable resistive wall mode (RWM) in 3D configurations by using results from ideal stability codes is presented. It is shown that the growth rate of the RWM
Publikováno v:
Fusion Science and Technology. 46:34-43
The nonlinear behavior of the interchange mode in Large Helical Device (LHD) plasma depends on the overlap of the vortices with different helicity. If the vortices are separated in the radial direction, each mode saturates mildly with generating the
Publikováno v:
Journal of Plasma and Fusion Research SERIES = Journal of Plasma and Fusion Research SERIES. 6:589
The time evolution of magnetic island in the nonlinear phase of the resistive interchange mode is examined in the cylindrical geometry. The effects of self-consistent uniform poloidal flow is taken into account. In this case, the reconnection of the
Autor:
Noriyoshi Nakajima, Masahiro Wakatani, Benjamin A. Carreras, Vickie E. Lynch, Katsuji Ichiguchi
Publikováno v:
Nuclear Fusion. 43:1101-1109
For the large helical device (LHD), the nonlinear evolution of equilibria that are linearly unstable to ideal interchange modes is studied using the reduced MHD equations. At sufficiently low beta, each individual mode saturates without affecting dir