Search Results - "Ushigusa, K."

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  1. 1

    Formation of advanced tokamak plasmas without the use of an ohmic-heating solenoid by Shiraiwa, S, Ide, S, Itoh, S, Mitarai, O, Naito, O, Ozeki, T, Sakamoto, Y, Suzuki, T, Takase, Y, Tanaka, S, Taniguchi, T, Aramasu, M, Fujita, T, Fukuda, T, Gao, X, Gryaznevich, M, Hanada, K, Jotaki, E, Kamada, Y, Maekawa, T, Miura, Y, Nakamura, K, Nishi, T, Tanaka, H, Ushigusa, K

    Published in Physical review letters (23-01-2004)
    “…A new operational scenario of advanced tokamak formation was demonstrated in the JT-60U tokamak. This was accomplished by electron cyclotron and lower hybrid…”
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    Journal Article
  2. 2

    Current profile measurements with motional Stark effect polarimeter in the JT-60U tokamak by Fujita, T, Kuko, H, Sugie, T, Isei, N, Ushigusa, K

    Published in Fusion engineering and design (01-03-1997)
    “…A motional Stark effect polarimeter with five viewing points has been installed to obtain current profiles in the JT-60U tokamak. Offset angles caused by…”
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    Journal Article
  3. 3
  4. 4

    Evolution of lower-hybrid-driven current during the formation of an internal transport barrier by Naito, O, Cui, Z, Ide, S, Suzuki, T, Oikawa, T, Seki, M, Hatae, T, Fujita, T, Kondoh, T, Shirai, H, Ikeda, Y, Ushigusa, K

    Published in Physical review letters (05-08-2002)
    “…Evolution of the lower-hybrid(LH)-driven current profile was measured during the formation of an internal transport barrier (ITB) in a reversed magnetic shear…”
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    Journal Article
  5. 5

    Design of the toroidal field coil for A-SSTR2 using high Tc superconductor by Ando, T, Kato, T, Ushigusa, K, Nishio, T, Kurihara, R, Aoki, I, Hamada, K, Tsuji, H, Hasegawa, M, Naito, H

    Published in Fusion engineering and design (01-11-2001)
    “…Advanced Steady State Tokamak Reactor2 (A-SSTR2) which meets both economical and environmental requirements, has been designed with the thermal fusion power of…”
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    Journal Article Conference Proceeding
  6. 6

    Electron cyclotron resonance discharge cleaning by using LHRF system on JT-60U by Ushigusa, K, Seki, M, Suganuma, K, Toyoshima, N, Ikeda, Y

    Published in Fusion engineering and design (1999)
    “…Electron cyclotron resonance discharge cleaning (ECR-DC) has been studied on JT-60U in which the first wall is completely covered by graphite tiles. The radio…”
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    Journal Article
  7. 7

    Enhancement of absorption of lower hybrid wave by filling the spectral gap by Ide, S, Naito, O, Kondoh, T, Ikeda, Y, Ushigusa, K

    Published in Physical review letters (24-10-1994)
    “…The interaction between a lower hybrid wave (LHW) and electrons in a plasma has been investigated. An LHW of low phase velocity was injected into a plasma in…”
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    Journal Article
  8. 8

    Vertical positional instability in JT-60SU by Kurita, G., Nagashima, K., Ushigusa, K., Kikuchi, M.

    Published in Fusion engineering and design (01-02-1998)
    “…JT-60SU has been designed as an experimental device to establish an integrated scientific basis of steady-state tokamak operation. The high elongation of…”
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    Journal Article
  9. 9

    Vibration analysis in JT-60SU design by Ushigusa, K, Isayama, A, Kurita, G, Ishida, S, Neyatani, Y, Ishiyama, S, Kikuchi, M, Otsuka, M, Sasak, T, Nakagawa, S, Ninomiya, H

    Published in Fusion engineering and design (01-11-2000)
    “…A dynamic analysis of the JT-60SU machine at emergency events such as an earthquake has been made. Superconducting coil systems and the vacuum vessel are…”
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    Journal Article Conference Proceeding
  10. 10

    Observation of the limiter H mode in the JT-60 tokamak with lower-hybrid current drive by TSUJI, S, USHIGUSA, K, KONDOH, T, SHIMADA, M, NAKAMURA, H, NAITO, O, YOSHIDA, H, NISHITANI, T, KUBO, H, TOBITA, K, KUSAMA, Y, ISHIDA, S, IKEDA, Y, SATO, M, ISEI, N, SUGIE, T, MIYA, N, YOSHINO, R, UEHARA, K, TEAM, IMAI, T, ITAMI, T, NEMOTO, M, NAGASHIMA, K, KOIDE, Y, KAWANO, Y, FUKUDA, T

    Published in Physical review letters (26-02-1990)
    “…The {ital H} mode was achieved in limiter discharges of a tokamak with lower-hybrid current drive for the first time. Simultaneous application of rf powers at…”
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    Journal Article
  11. 11

    Launcher heat load on high power LHCD experiments in JT-60U by Naito, O., Ikeda, Y., Seki, M., Ide, S., Kondoh, T., Ushigusa, K.

    Published in Journal of nuclear materials (01-04-1995)
    “…Heat loads on a lower hybrid wave launcher as well as on the first wall during high power auxiliary heating and their origin are investigated. It is found that…”
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    Journal Article
  12. 12

    Heat deposition on the first wall due to ICRF-induced loss of fast ions in JT-60U by Kusama, Y., Tobita, K., Kimura, H., Hamamatsu, K., Fujii, T., Nemoto, M., Saigusa, M., Moriyama, S., Tani, K., Koide, Y., Sakasai, A., Nishitani, T., Ushigusa, K.

    Published in Journal of nuclear materials (01-04-1995)
    “…In JT-60U, the heat deposition on the first wall due to the ICRF-induced loss of fast ions was investigated by changing the position of the resonance layer in…”
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    Journal Article
  13. 13

    Interaction of lower hybrid wave with fast ions injected by neutral beam on the JT-60 tokamak by Nemoto, M, Ushigusa, K, Imai, T, Ikeda, Y, Naito, O, Kusama, Y, Tobita, K, Takeuchi, H

    Published in Physical review letters (01-07-1991)
    “…The acceleration of beam ions due to their interaction with lower hybrid (LH) waves is investigated. The critical coupling density, above which the LH power is…”
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    Journal Article
  14. 14

    Physical design of JT-60 super upgrade by Nagashima, K., Kikuchi, M., Kurita, G., Ozeki, T., Aoyagi, T., Ushigusa, K., Neyatani, Y., Kubo, T., Mori, K., Nakagawa, S., Kuriyama, M., Nagami, M.

    Published in Fusion engineering and design (01-05-1997)
    “…The JT-60 Super Upgrade (JT-60SU) is an upgraded tokamak device of JT-60U for developing the steady-state reactor and advanced tokamak operation in the…”
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    Journal Article
  15. 15

    Molecular cloning, expression, and characterization of a novel endo-a-N-acetylgalactosaminidase from Enterococcus faecalis by Goda, H M, Ushigusa, K, Ito, H, Okino, N, Narimatsu, H, Ito, M

    “…We report here the molecular cloning, expression and characterization of a novel endo-a-N-acetylgalactosaminidase, classified into the GH101 family, from…”
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    Journal Article
  16. 16

    Stationary multifaceted asymmetric radiation from the edge and improved confinement mode in a superconducting tokamak by Gao, X, Xie, J K, Wan, Y X, Ushigusa, K, Wan, B N, Zhang, S Y, Li, J, Kuang, G L

    “…Stationary multifaceted asymmetric radiation from the edge (MARFE) is studied by gas-puffing feedback control according to an empirical MARFE critical density…”
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    Journal Article
  17. 17

    Thermoluminescence and induced absorption in X-ray-irradiated CdS-doped glasses by Miyoshi, Tadaki, Ushigusa, Keita, Migita, Kouto, Tamechika, Masakatsu, Tokuda, Nobuko, Kaneda, Teruhisa

    Published in Journal of materials science (2008)
    “…Thermoluminescence of X-ray-irradiated CdS-doped glasses has been measured, and relation between thermoluminescence and induced absorption in the…”
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    Journal Article
  18. 18

    Design and fabrication of multijunction launcher on the JT-60 by Konishi, K., Ikeda, Y., Seki, M., Imai, T., Honda, M., Yokokura, K., Sawahata, M., Sato, M., Suganuma, K., Ushigusa, K., Uehara, K.

    “…A multijunction-type launcher was installed on the JAERI (Japan Atomic Energy Research Institute) Tokamak-60 (JT-60). It is composed of 32 modules consisting…”
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    Conference Proceeding
  19. 19

    Computational study on eddy current characteristics in a super conducting tokamak by Abe, Mitsushi, Nakayama, Takeshi, Fukumoto, Hideshi, Doi, Akira, Ushigusa, Kenkichi, Kurita, Gen-ichi, Kikuchi, Mitsuru, Nishio, Satoshi

    Published in Fusion engineering and design (01-05-2002)
    “…Eddy currents in a super conducting (SC) tokamak were calculated in order to understand the characteristics of magnetic fields, electromagnetic (EM) forces and…”
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    Journal Article
  20. 20

    Simulation studies of plasma initiation and disruption in JT-60U by Senda, Ikuo, Shoji, Teruaki, Tsunematsu, Toshihide, Matsukawa, Makoto, Ushigusa, Kenkichi

    Published in Fusion engineering and design (01-03-1999)
    “…The plasma initiation and the disruption observed in JT-60U experiment are simulated by using TSPS (Toroidally Symmetric Plasma Simulation) code and EDDYCAL…”
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    Journal Article