Journal Article10.1088/0741-3335/45/12A/027
Recent diagnostic developments on LHD
Shigeru Sudo,Y. Nagayama,B.J. Peterson,Kazuo Kawahata,Tsuyoshi Akiyama,N. Ashikawa,M. Emoto,Motoshi Goto,Y. Hamada,Katsumi Ida,T. Ido,H. Iguchi,Shigeru Inagaki,Mitsutaka Isobe,T. Kobuchi,A. Komori,Yunfeng Liang,Suguru Masuzaki,T. Minami,Tomohiro Morisaki,S. Morita,Sadatsugu Muto,Y. Nakamura,Hideya Nakanishi,M Narushima,K. Narihara,Masaki Nishiura,A. Nishizawa,Satoshi Ohdachi,Masaki Osakabe,Tetsuo Ozaki,R. O. Pavlichenko,Satoru Sakakibara,Kuninori Sato,Mamoru Shoji,Naoki Tamura,Kenji Tanaka,K. Toi,T. Tokuzawa,K.Y. Watanabe,Tomo-Hiko Watanabe,Hiroshi Yamada,Ichihiro Yamada,Mikiro Yoshinuma,P. Goncharov,D. Kalinina,T Kanaba,T Sugimoto,Akira Ejiri,Yasushi Ono,H. Hojo,K. Ishii,N. Iwama,Yuichiro Kogi,Atsushi Mase,Mizuki Sakamoto,Katsumi Kondo,H Nagasaki,Satoshi Yamamoto,Nobuhiro Nishino,Shigeki Okajima,T. Saida,Mamiko Sasao,T Takeda,Shunji Tsuji-Iio,D. S. Darrow,H. Takahashi,Yong Liu,J. F. Lyon,A.Yu. Kostrioukov,V B Kuteev,Vladimir Yu. Sergeev,I. Viniar,A. V. Krasilnikov,Andrei Sanin,Leonid Vyacheslavov,Dan Stutman,Michael Finkenthal,O. Motojima +78 more
TL;DR: In this article, the authors developed two-dimensional diagnostics for steady-state plasma in the large helical device (LHD) through domestic and international collaborations, including tangential cameras (fast SX TV, photon counting CCD, Hα TV); tomography (tangential SX CCD); imaging (bolometer, ECE, reflectometer).
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Abstract: Standard diagnostics for fundamental plasma parameters and for plasma physics are routinely utilized for daily operation and physics studies in the large helical device (LHD) with high reliability. Diagnostics for steady-state plasma are under intensive development, especially for Te, ne (yttrium–aluminium garnet (YAG) laser Thomson, CO2 laser polarimeter), data acquisition in steady-state and heat-resistant probes. To clarify the plasma properties of the helical structure, two- or three-dimensional diagnostics are being aggressively developed: tangential cameras (fast SX TV, photon counting CCD, Hα TV); tomography (tangential SX CCD, bolometer); imaging (bolometer, ECE, reflectometer). Divertor and edge physics are important key issues for steady-state operation. Diagnostics for neutral flux (Hα array, Zeeman spectroscopy) and ne (fast scanning probe, Li beam probe, pulsed radar reflectometer) are also in advanced stages of development. In addition to these, advanced diagnostics are being intensively developed in LHD through domestic and international collaborations.
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Citations
Diagnostics for steady state plasmas
TL;DR: In this article, problems arising from high power ECRH under conditions of incomplete absorption are discussed, and individual standard diagnostic systems are discussed to identify their specific problems as well as the opportunities connected with long pulse operation.
Transport characteristics of tracer and intrinsic impurities depending on the density of LHD plasmas
Shigeru Sudo,Naoki Tamura,Sadatsugu Muto,Hisamichi Funaba,Chihiro Suzuki,Akiyoshi Murakami,Izumi Murakami,Yasuo Yoshimura +7 more
TL;DR: In this article, a tracer-encapsulated solid pellet (TESPEL) with triple tracers was injected into a plasma in the Large Helical Device (LHD), and it was found that the Kα emissions from the intrinsic impurities were strongly suppressed, while those from all three tracers were retained for a long time.
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Multiple-tracer TESPEL injection for studying impurity behaviour in a magnetically confined plasma
TL;DR: In this paper, a tracer-encapsulated solid pellet (TESPEL) injection with multiple tracers is developed to study impurity behaviour in a magnetically confined plasma.
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Review on the Progress of the LHD Experiment
Osamu Motojima,Hiroshi Yamada,Akio Komori,K.Y. Watanabe,Takashi Mutoh,Yasuhiko Takeiri,Katsumi Ida,Tsuyoshi Akiyama,Nobuyuki Asakura,Naoko Ashikawa,Hirotaka Chikaraishi,W. A. Cooper,Masahiko Emoto,Takaaki Fujita,M. Fujiwara,Hisamichi Funaba,P. R. Goncharov,Motoshi Goto,Yasuji Hamada,S. Higashijima,Tomoaki Hino,M. Hoshino,Makoto Ichimura,Hiroshi Idei,Takeshi Ido,Katsunori Ikeda,Shinsaku Imagawa,Shigeru Inagaki,Akihiko Isayama,Mitsutaka Isobe,T. Itoh,Kimitaka Itoh,Shinichiro Kado,D. Kalinina,T. Kaneba,Osamu Kaneko,Daiji Kato,T. Kato,Kazuo Kawahata,Hisato Kawashima,H. Kawazome,T. Kobuchi,Katsumi Kondo,Shin Kubo,Ryuhei Kumazawa,J. F. Lyon,Ryuji Maekawa,Atsushi Mase,Suguru Masuzaki,Toshiyuki Mito,Keisuke Matsuoka,Y. Miura,J. Miyazawa,R. More,Tomohiro Morisaki,S. Morita,Izumi Murakami,Sadayoshi Murakami,S. Mutoh,Kenichi Nagaoka,Kazunobu Nagasaki,Yoshio Nagayama,Y. Nakamura,Hideya Nakanishi,Kazumichi Narihara,Yoshiro Narushima,H. Nishimura,K. Nishimura,Masaki Nishiura,Atsushi J. Nishizawa,N. Noda,Takashi Notake,H. Nozato,Satoshi Ohdachi,Kunizo Ohkubo,Nobuyoshi Ohyabu,Naoyuki Oyama,Yoshihide Oka,Hiroyuki Okada,Masaki Osakabe,T. Ozaki,Byron J. Peterson,Akio Sagara,T. Saida,K. Saito,Satoru Sakakibara,Mizuki Sakamoto,Ryuichi Sakamoto,Mamiko Sasao,Kuninori Sato,Tetsuo Seki,Takashi Shimozuma,Mamoru Shoji,Shigeru Sudo,S. Takagi,Y. Takahashi,Yuichi Takase,Hidenobu Takenaga,N. Takeuchi,Naoki Tamura,Kenji Tanaka,M. Y. Tanaka,K. Toi,Kazuya Takahata,T. Tokuzawa,Yuki Torii,Katsuyoshi Tsumori,F. Watanabe,M. Watanabe,Tomo-Hiko Watanabe,T. Watari,Ichihiro Yamada,S. Yamada,T. Yamaguchi,Shoji Yamamoto,K. Yamazaki,Nagato Yanagi,Masayuki Yokoyama,Nobuaki Yoshida,Shinji Yoshimura,Yasuo Yoshimura,Mikiro Yoshinuma +121 more
TL;DR: In this article, the authors reviewed the recent progress in the Large Helical Device (LHD) experiment during the last two years and reviewed its operational regime toward fusion-relevant conditions while taking advantage of the netcurrent-free heliotron concept employing a superconducting coil system.
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Electron-loss cross sections for heavy-ion beam probe using gold beams: experiment and theory
M. M. Sant’Anna,Fabio Zappa,Ginette Jalbert,A. C. F. Santos,B. F. Magnani,L. F. S. Coelho,N. V. de Castro Faria +6 more
TL;DR: In this article, the authors present cross section experimental data required for modeling beam production, attenuation and energy loss in the heavy-ion beam probe technique, namely, electron-loss cross sections for anionic gold projectiles and Ar and N2 targets in the energy range from 30 keV to 1 MeV.
12
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