Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Takumi Onchi"'
Autor:
Masakatsu Fukumoto, Qilin Yue, Kazuaki Hanada, Shinichiro Kojima, Tomohide Nakano, Naoaki Yoshida, Ryuya Ikezoe, Yoshihiko Nagashima, Takeshi Ido, Takumi Onchi, Hiroshi Idei, Hiroki Iguchi, Takumi Komiyama, Taiichi Shikama, Akira Ejiri, Suguru Masuzaki, Mizuki Sakamoto, Yoshio Ueda, Kengoh Kuroda, Kaori Kono, Shun Shimabukuro, Aki Higashijima
Publikováno v:
Nuclear Fusion, Vol 64, Iss 6, p 066022 (2024)
Electron cyclotron wall conditioning with neon gas (Ne-ECWC) has been performed on the normal conducting spherial tokamak QUEST with metal walls under a trapped particle configuration with O-mode EC waves including X-mode polarization with a frequenc
Externí odkaz:
https://doaj.org/article/dc7328719089407c8a782f4e964d75b1
Autor:
Kazuo Toi, Takumi Onchi, Hideki Zushi, Kengoh Kuroda, Hiroshi Idei, Kazuaki Hanada, Makoto Hasegawa, Shinichiro Kojima, Ryuya Ikezoe, Takeshi Ido, Shoji Kawasaki, Aki Higashijima, QUEST Experiment Group
Publikováno v:
Nuclear Fusion, Vol 63, Iss 10, p 106018 (2023)
A novel divertor biasing by four biasing plates distributed toroidally (TDDB) on the upper divertor target plate is applied to low density tokamak plasmas started-up by 28 GHz 2nd harmonic electron cyclotron current drive (ECCD) in a quasi-double nul
Externí odkaz:
https://doaj.org/article/4295ba83a6c74210b5783eaa3a446b35
Autor:
Makoto Hasegawa, Kazuaki Hanada, Hiroshi Idei, Shoji Kawasaki, Takahiro Nagata, Ryuya Ikezoe, Takumi Onchi, Kengoh Kuroda, Aki Higashijima
Publikováno v:
Heliyon, Vol 6, Iss 6, Pp e04214- (2020)
As technology has improved in recent years, it has become possible to create new valuable functions by combining various devices and sensors in a network. This concept is referred to as the Internet of Things (IoT), and predictive maintenance is a ne
Externí odkaz:
https://doaj.org/article/626046b5de4444ffb521fd58c7876644
Autor:
Satoru Mori, Taiichi Shikama, Kazuaki Hanada, Nao Yoneda, Arseniy Kuzmin, Masahiro Hasuo, Hiroshi Idei, Takumi Onchi, Akira Ejiri, Yuki Osawa, Yi Peng, Kyohei Matsuzaki, Shinichiro Kado, Keiji Sawada, Takeshi Ido, Kazuo Nakamura, Ryuya Ikezoe, Yoshihiko Nagashima, Makoto Hasegawa, Kengo Kuroda, Aki Higashijima, Takahiro Nagata, Shun Shimabukuro
Publikováno v:
Atoms, Vol 8, Iss 3, p 44 (2020)
The spatial distribution of the hydrogen atom density was evaluated in a spherical tokamak (ST) plasma sustained only with 28 GHz electron cyclotron heating (ECH). The radially resolved Hδ emissivity was measured using multiple viewing chord spectro
Externí odkaz:
https://doaj.org/article/1a939f3ecc11476bababf6f7036cdba7
Autor:
Nao Yoneda, Taiichi Shikama, Filippo Scotti, Kazuaki Hanada, Hiroki Iguchi, Hiroshi Idei, Takumi Onchi, Akira Ejiri, Takeshi Ido, Kaori Kono, Yi Peng, Yuki Osawa, Go Yatomi, Akihiro Kidani, Michihiro Kudo, Ryosuke Hiraka, Kosuke Takeda, Ronald E Bell, Anurag Maan, Dennis P Boyle, Richard P Majeski, Vlad Soukhanovskii, Mathias Groth, Adam G McLean, Robert S Wilcox, Charles Lasnier, K Nakamura, Yoshihiko Nagashima, Ryuya Ikezoe, Makoto Hasegawa, Kengoh Kuroda, Aki Higashijima, Takahiro Nagata, Shun Shimabukuro, Ichiro Niiya, Izumi Sekiya, Masahiro Hasuo
Publikováno v:
Nuclear Fusion.
Spatially resolved rotational temperature of ground state hydrogen molecules desorbed from plasma-facing surface was measured in QUEST, LTX-β, and DIII-D tokamaks, and the increases of the rotational temperature with the surface temperature and due
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::794ed44dac3fa98ed98c3f0ef997c252
https://doi.org/10.1088/1741-4326/acd4d1
https://doi.org/10.1088/1741-4326/acd4d1
Autor:
Takumi Onchi, Hiroshi Idei, Nagato Yanagi, Yifan Zhang, Kazuo Nakamura, Kengoh Kuroda, Makoto Hasegawa, Ryuya Ikezoe, Kazuaki Hanada, Takeshi Ido, Masahiro Kobayashi, Yuichi Ogawa, Minoru Yoshitani, Takemi Kawamura
Publikováno v:
Fusion Engineering and Design. 192:113794
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::058f1e8fce507b8b0b4ff2acfe3fef74
https://doi.org/10.1016/j.fusengdes.2023.113794
https://doi.org/10.1016/j.fusengdes.2023.113794
Autor:
Yifan Zhang, Takumi Onchi, Kazuo Nakamura, Yuya Otsuka, Yuji Koide, Qilin Yue, Takahiro Nagata, Shoji Kawasaki, Kengoh Kuroda, Makoto Hasegawa, Ryuya Ikezoe, Takeshi Ido, Kazuaki Hanada, Hiroshi Idei
Publikováno v:
Fusion Engineering and Design. 191:113648
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21023e85d60f293442304f02ebf85f32
https://doi.org/10.1016/j.fusengdes.2023.113648
https://doi.org/10.1016/j.fusengdes.2023.113648
Autor:
Kaori KONO, Takeshi IDO, Akira EJIRI, Kazuaki HANADA, Qilin YUE, Makoto HASEGAWA, Yi PENG, Seiya SAKAI, Ryuya IKEZOE, Hiroshi IDEI, Syoji KAWASAKI, Kengoh KURODA, Takumi ONCHI, Yoshihiko NAGASHIMA, Seowon JANG
Publikováno v:
Plasma and Fusion Research. 18:1405012-1405012
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fcba6d24089bb873a414469e8872b5c
https://doi.org/10.1585/pfr.18.1405012
https://doi.org/10.1585/pfr.18.1405012
Autor:
Yifan ZHANG, Takumi ONCHI, Kazuo NAKAMURA, Qilin YUE, Takahiro NAGATA, Shoji KAWASAKI, Kengoh KURODA, Makoto HASEGAWA, Ryuya IKEZOE, Takeshi IDO, Kazuaki HANADA, Hiroshi IDEI
Publikováno v:
Plasma Science and Technology. 25:055104
A power-supply system was developed for Ohmic heating (OH) to double × 1018 the amount of change magnetic flux in the primary central solenoid (CS) on the QUEST spherical tokamak. Two power supplies are connected with stacks of insulated-gate bipola
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e44551e97085cffa38bcd098ce2917cf
https://doi.org/10.1088/2058-6272/acafc2
https://doi.org/10.1088/2058-6272/acafc2
Autor:
Haiqing Liu, A. Higashijima, Nobuaki Yoshida, Sadayoshi Murakami, Akiyoshi Hatayama, Yasuhisa Oya, Kengoh Kuroda, Xiang Gao, T. Shikama, Yoshihiko Nagashima, S. Kawasaki, Hiroshi Idei, Yuichi Takase, Ryuya Ikezoe, Takahiro Nagata, Makoto Hasegawa, Makoto Oya, Shun Shimabukuro, Takumi Onchi, Kazuaki Hanada, Jinping Qian, Ikuji Takagi, Kazuo Nakamura
Publikováno v:
Nuclear Materials and Energy, Vol 27, Iss, Pp 101013-(2021)
QUEST (Q-shu university experiment with steady state spherical tokamak) is a midsize spherical tokamak capable of steady-state operation, comprising all-metal plasma-facing walls and a hot wall (HW) to address issues pertaining to fuel particle balan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f249926638a7e0c1c8d13c0df7d6ded2
http://www.sciencedirect.com/science/article/pii/S2352179121000892
http://www.sciencedirect.com/science/article/pii/S2352179121000892