Zobrazeno 1 - 10
of 133
pro vyhledávání: '"Shunji Tsuji-Iio"'
Autor:
Masayoshi Nagata, Yuichi Takase, Naoto Tsujii, Hitoshi Tanaka, Sadayoshi Murakami, Kohei Yasuda, Takaaki Fujita, Yutaka Kamada, Shunji Tsuji-Iio, Hiroshi Kasahara, Takumi Onchi, Yasuhiko Takeiri, Kazuaki Hanada, Yasushi Todo, Masaki Uchida, Hiroshi Idei, Yasushi Ono, Akira Ejiri
Publikováno v:
Y. Takase et al 2022 Nucl. Fusion 62 042011
Spherical tokamak (ST) research in Japan has produced many innovative results: (i) plasma start-up to I p > 70 kA was achieved by electron cyclotron wave (ECW) with N ∥ = 0.75, while electron heating to T e > 500 eV was achieved with N ∥ = 0.26 o
Autor:
Masamichi Murayama, Daisuke Kuwahara, Shin Naito, Shunji Tsuji-Iio, Shoichi Hatakeyama, Yasuhiro Suzuki, Hiroaki Tsutsui
Publikováno v:
Nuclear Fusion. 61:116035
Saddle coils (SCs) are proposed as coils with a stabilizing effect of a vertical plasma position. This effect comes from an average magnetic field along a magnetic field line. Magnetic field line tracing was performed to investigate the structure and
Publikováno v:
Plasma and Fusion Research. 16:2402033
Autor:
Taketsune Nakamura, Nagato Yanagi, Shunji Tsuji-Iio, Shinichi Nomura, Hiroaki Tsutsui, Tsuyoshi Yagai, Hirotaka Chikaraishi, Shinsaku Imagawa
Publikováno v:
H. Tsutsui et al., "Edgewise Bending Strain in Helical Coils With Geodesic Windings Based on Virial Theorem," in IEEE Transactions on Applied Superconductivity, vol. 26, no. 4, pp. 1-4, June 2016, Art no. 4901704, doi: 10.1109/TASC.2016.2535779.
Distributions of edgewise bending strain in helical coils with the geodesic winding based on virial theorem are analyzed theoretically and numerically. A force-balanced coil (FBC) is a multipole helical coil combining toroidal field (TF) coils and a
Publikováno v:
Fusion Engineering and Design. 148:111270
Tokamak devices with non-superconducting magnets require a large amount of pulsed power consumption when the power grids are not robust enough. In this case, these devices are equipped with some energy buffers to avoid the influence on the grids. In
Publikováno v:
IEEE Transactions on Applied Superconductivity.
This paper deals with a pulsed power supply system combining flywheel energy storage system (FESS) and a modular multilevel cascade converter (MMCC) for power compensation in performing rapid excitation of highly inductive and pulsed heavy loads. The
Publikováno v:
IEEE Transactions on Applied Superconductivity; Apr2018, Vol. 28 Issue 3, p1-4, 4p
Autor:
Akihiro Ishizawa, Noriyoshi Nakajima, Shinya Maeyama, Tomo-Hiko Watanabe, Shunji Tsuji-Iio, Hiroaki Tsutsui
Publikováno v:
Computer Physics Communications. 184:2462-2473
Numerical techniques for parallel dynamics in electromagnetic gyrokinetic simulations are introduced to regulate unphysical grid-size oscillations in the field-aligned coordinate. It is found that a fixed boundary condition and the nonlinear mode cou
Autor:
Shinya Maeyama, Noriyoshi Nakajima, Shunji Tsuji-Iio, Akihiro Ishizawa, Tomo-Hiko Watanabe, Hiroaki Tsutsui
Publikováno v:
Computer Physics Communications. 183:1986-1992
A hybrid method of semi-Lagrangian and additive semi-implicit Runge–Kutta schemes is developed for gyrokinetic Vlasov simulations in a flux tube geometry. The time-integration scheme is free from the Courant–Friedrichs–Lewy condition for the li
Autor:
Shinya Maeyama, Tomo-Hiko Watanabe, Noriyoshi Nakajima, Akihiro Ishizawa, Shunji Tsuji-Iio, Hiroaki Tsutsui
Publikováno v:
Plasma and Fusion Research. 87:359-370
A semi-Lagrangian scheme is applied for the first time to computations of charged particle motions along magnetic field lines, to numerically solve the δf gyrokinetic equations in a flux tube geometry. This new solver adopted in the gyrokinetic Vlas