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 on...
46th EPS Conference on Plasma Physics, EPS 2019 2019年
Multiple plasmoid reconnection required for the flux closure in the transient-coaxial helicity injection (T-CHI) start-up process has been demonstrated in the Helicity Injected Spherical Torus (HIST) device. Two or three plasmoids are generated af...
International Journal of Applied Electromagnetics and Mechanics 59(2) 439-446 2019年 [査読有り]
Two-fluid (ions and electrons) flowing equilibrium configurations of spherical torus plasma are numerically determined by using the multi-grid method. The axisymmetric equilibrium equations consist of a pair of second-order partial differential eq...
39th EPS Conference on Plasma Physics 2012, EPS 2012 and the 16th International Congress on Plasma Physics 3 1766-1769 2012年12月
The dynamo current drive with two-fluid effects has been investigated in the helicity-driven spherical torus (ST) plasmas on HIST. 2D internal magnetic field measurements of the ST configuration has verified the flux amplification and the generati...
Flux amplification and sustainment of the spherical torus (ST) configurations by operating in Multi-pulsing Coaxial Helicity Injection (M-CHI) method have been demonstrated in the Helicity Injected Spherical Torus (HIST) device. We have studied th...