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Department of Applied Biological Science, Faculty of Science and Technology, Science University of Tokyo, Noda-shi, Chiba-ken 278, Japan a Laboratory of Microbial Resource, National Institute of Bioscience and Human-Technology, Tsukuba-shi, Ibaraki-ken 305, Japan b Laboratory of Cell Biology, Aichi Cancer Center Research Institute, Nagoya-shi, Aichi-ken(More)
  • NAGASAKI Kazunobu, EJIRI Akirar, +9 authors ZUSHI Hideki
  • 2008
Launching conditions for electron cyclotron heating (ECH) are studied on Heliotron E. In heliotronltorsatron configurations, the polarization of the launched wave should be determined by taking into account the effect of magnetic shear. The best-localized heating is obtained when the electric field of the launched wave is off-normal to the resonant magnetic(More)
  • KANEKO Masashi, K Shinji, +8 authors SANO Fumimichi
  • 2006
The behavior of energetic particles is investigated with a charge-exchange neutral particle energy analyzer (CX-NPA) system in Heliotron J. In the tangential neutral beam injection (NBI) experiments, the high energy tail component up to 20 keV is observed in proton energy spectrum. The dependence of the energetic particle confinement on the magnetic(More)
In order to study the dependence of the angle between the antenna RF current and the magnetic field line on the plasma loading resistance in Ion Cyclotron Range of Frequency (ICRF) heating, a small loop antenna was fabricated and introduced into Heliotron-E device. The loading resistance decreased gradually with the distance between the antenna and the(More)
In the I = 2lm = 19 Heliotron E device, with currentless NBI and NBI+ECH plasmas, measurements were made of electric currents flowing to grounded collector plates installed near the vacuum chamber wall in 4 poloidal cross-sections of the torus within l/2 helical pitch. A strong up-down asymmetry in both absolute value and sign was observed in the currents(More)
  • FUJITA Norihito, K Katsumi, +6 authors ZUSHI Hideki
  • 2008
Observation of the complete suppression of integral effect of Pfirsch-Schhiter current in Heliotron E plasmas is reported. Poloidal magnetic field was measured to control the plasma boundary position. We found that pressure-induced plasma shift, an observable characteristic of Pfirsch-Schliiter current, depends strongly on the initial position of magnetic(More)
MHD equilibria of Heliotron J plasma are investigated by using HINT code. By assuming some profiles of the current density, effects of the net toroidal currents on the magnetohydrodynamics (MHD) equilibrium are investigated. If the rotational transform can be controlled by the currents, the generation of good flux surfaces is expected. In order to study(More)
  • MIZUUCHI Tohrur, NAKASUGA Masahikor, +11 authors OBIKI Tokuhiror
  • 2008
To investigate the property and structure of the diverted plasmas heated by 53.2GHz 2nd harmonic ECH in Heliotron J, two sets of Langmuir probe arrays with two dimensional spatial resolution were installed at the divertor legs which lie up-down symmetrically in the topology of the magnetic field. A clear up-down asymmetry was observed in the profiles of the(More)
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