Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Tsuyoshi Kariya"'
Autor:
Tsuyoshi Imai, Maho Matsukura, Shigeru Yokota, Tsuyoshi Kariya, Kaisei Miyawaki, Kohei Shimamura, Naoto Ozaki, Ryutaro Minami
Publikováno v:
Journal of Spacecraft and Rockets. 57:632-635
Autor:
T. Imai, Ken Kajiwara, Yuusuke Yamaguchi, R. Ikeda, Kazuo Hayashi, Masafumi Fukunari, Koji Takahashi, Tsuyoshi Kariya, Kimiya Komurasaki, Keishi Sakamoto, A. Manabe, R. Minami, Yoshinori Tatematsu, Yasuhisa Oda, Kuniyoshi Tabata
Publikováno v:
2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).
We report high-power microwave oscillation of a 94 GHz gyrotron, contributing to the study on air breakdown plasma in Microwave Rocket. The gyrotron is demountable, adopting a diode magnetron injection gun and a built-in quasi-optical mode converter,
Autor:
Atsushi Fukuyama, Shin Kubo, Takahiro Nagata, Yuichi Takase, M. Sakaguchi, Hiroshi Idei, K. Mishra, Makoto Hasegawa, Akira Ejiri, Masaharu Fukuyama, M. Ono, Yoshihiko Nagashima, Satoru Kobayashi, A. Higashijima, Toru Ii Tsujimura, Shinichiro Kojima, Katsumasa Nakamura, Osamu Watanabe, Tsuyoshi Imai, Kengoh Kuroda, Naoki Matsumoto, Tsuyoshi Kariya, S. Shimabukoro, Takumi Onchi, Kazuaki Hanada, Miu Yunoki, Sadayoshi Murakami
Publikováno v:
Fusion Engineering and Design. 146:1149-1152
New polarizer and launcher systems on a 28-GHz electron-cyclotron (EC) heating and current drive (HCD) system have been developed for non-inductive second-harmonic EC-plasma-current ramp-up in the QUEST spherical tokamak. A launcher system with two q
Autor:
A. Terakado, Akiyoshi Hatayama, M. Fukumoto, Tsuyoshi Imai, Sotaro Yamashita, Makoto Ichimura, Ryutaro Minami, Junko Kohagura, Tsuyoshi Kariya, Yousuke Nakashima, Satoshi Togo, Kunpei Nojiri, M. Hirata, Mamoru Shoji, M. M. Islam, Keiji Sawada, Suguru Masuzaki, Tomoharu Numakura, Tsubasa Yoshimoto, T. Nakano, Md. Shahinul Islam, Nobuyuki Asakura, Naomichi Ezumi, Mizuki Sakamoto, Ryuya Ikezoe, Takaaki Iijima, Masayuki Yoshikawa
Publikováno v:
Nuclear Materials and Energy, Vol 18, Iss, Pp 216-221 (2019)
The transition of a detached to attached plasma experiment has been performed in GAMMA 10/PDX by applying an additional plasma heating pulse of electron cyclotron heating (ECH). In a plasma detachment experiment, a short pulse (25 ms) of ECH was appl
Autor:
T. Imai, Takashi Taniguchi, Koji Takahashi, Kazuo Hayashi, Yoshinori Tatematsu, Masafumi Fukunari, R. Minami, Ken Kajiwara, Yuusuke Yamaguchi, Yasuhisa Oda, Kuniyoshi Tabata, Tsuyoshi Kariya, Kimiya Komurasaki, R. Ikeda, Keishi Sakamoto, Yuki Harada, T. Takeuchi
Publikováno v:
2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
To realize the GW-class power source for Microwave Rocket, the cost reduction of gyrotrons is one of the solutions to lower the threshold to realize the beam station. In this study, a sub-MW-class gyrotron which adapted a smaller bore diameter of the
Autor:
Akiyoshi Hatayama, Mafumi Hirata, Ryutaro Minami, Seiji Ishiguro, Kazuo Hoshino, Md. Shahinul Islam, Yousuke Nakashima, Kunpei Nojiri, Hiroki Hasegawa, Masayuki Yoshikawa, Takaaki Iijima, Mizuki Sakamoto, Naomichi Ezumi, Hiroto Matsuura, Tsuyoshi Kariya
Publikováno v:
Plasma and Fusion Research. 15:1402704
The transition phenomenon of detached plasma during additional heating effects has been studied by applying a short pulse (25 ms) of Electron Cyclotron Heating (ECH) at the east plug-cell of the tandem mirror device GAMMA 10/PDX. In this paper, the p
Fully non-inductive second harmonic electron cyclotron plasma ramp-up in the QUEST spherical tokamak
Autor:
Shin Kubo, Akihide Fujisawa, Takumi Onchi, S. Kawasaki, Kazuaki Hanada, Hideki Zushi, Mizuki Sakamoto, Tsuyoshi Imai, Atsushi Fukuyama, Tsuyoshi Kariya, K. Mishra, K. Matsuoka, Kazuo Toi, Yoshihiko Nagashima, Shunsuke Ide, A. Higashijima, Takashi Shimozuma, H. Nakashima, Md. Mahbub Alam, Osamu Watanabe, Taira Maekawa, Hiroshi Idei, Jinping Qian, Akira Ejiri, M. Yoshikawa, K. Nakamura, Yuichi Takase, Makoto Hasegawa
Publikováno v:
Nuclear Fusion. 57(12):126045-126055
Fully non-inductive second (2nd) harmonic electron cyclotron (EC) plasma current ramp-up was demonstrated with a newlly developed 28 GHz system in the QUEST spherical tokamak. A high plasma current of 54 kA was non-inductively ramped up and sustained
Autor:
Shun Shimabukuro, Ryuya Ikezoe, Yoshihiko Nagashima, Takahiro Nagata, Hatem Elserafy, Nicola Bertelli, Shinichiro Kojima, Masaharu Fukuyama, Hiroshi Idei, Nao Yoneda, Masayuki Ono, Sadayoshi Murakami, Taiichi Shikama, Akira Ejiri, Shoji Kawasaki, Aki Higashijima, Kazuo Nakamura, Takumi Onchi, Kazuaki Hanada, Tsuyoshi Kariya, Yuichi Takase, Makoto Hasegawa, Ryota Yoneda, Kengoh Kuroda
Publikováno v:
Plasma Physics and Controlled Fusion. 63:105002
Autor:
Kohei Shimamura, Mizojiri, Tsuyoshi Imai, Ryutaro Minami, Shigeru Yokota, Masatoshi Suzuki, Maho Matsukura, Tsuyoshi Kariya
Publikováno v:
The Review of scientific instruments. 90(2)
An instantaneous measurement system of high-power millimeter-wave was proposed and demonstrated with a 28 GHz gyrotron at the Plasma Research Center, University of Tsukuba. The high-power detector consists of an attenuator and a linear polarized micr
Autor:
Md. Shahinul Islam, Sotaro Yamashita, Yousuke Nakashima, Mizuki Sakamoto, Makoto Ichimura, Ryuya Ikezoe, Naomichi Ezumi, Kazuya Ichimura, Toru Iijima, R. Perillo, Akiyoshi Hatayama, Yosuke Kinoshita, Ryutaro Minami, Noriyasu Ohno, Hirohiko Tanaka, S. Sawada, Satoshi Togo, Shinichiro Kado, A. Terakado, Masayuki Yoshikawa, Tomohiro Mikami, Mafumi Hirata, S. Jang, M. M. Islam, Junko Kohagura, Toshiki Hara, Akira Tonegawa, Tsuyoshi Kariya, Suguru Masuzaki, Tomoharu Numakura, Isao Katanuma, Tsuyoshi Imai, Tsubasa Yoshimoto, Kunpei Nojiri, T. Nakano
Publikováno v:
Nuclear Fusion, 59, 066030
Nuclear Fusion, 59(6):066030. Institute of Physics
Nuclear Fusion, 59(6):066030. Institute of Physics
We have investigated the synergistic effect of a combination of various impurity gases and hydrogen gas on plasma detachment of high temperature plasma, equivalent to scrape-off layer plasma of tokamaks in the GAMMA 10/PDX end region, utilizing an op
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d21b7528c45625ab5f1593d70f6c536e
https://www.differ.nl/bibcite/reference/8505
https://www.differ.nl/bibcite/reference/8505