Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Initial physics achievements of large helical device experiments
Autore:
Motojima, O; Yamada, H; Komori, A; Ohyabu, N; Kawahata, K; Kaneko, O; Masuzaki, S; Ejiri, A; Emoto, M; Funaba, H; Goto, M; Ida, K; Idei, H; Inagaki, S; Inoue, N; Kado, S; Kubo, S; Kumazawa, R; Minami, T; Miyazawa, J; Morisaki, T; Morita, S; Murakami, S; Muto, S; Mutoh, T; Nagayama, Y; Nakamura, Y; Nakanishi, H; Narihara, K; Nishimura, K; Noda, N; Kobuchi, T; Ohdachi, S; Oka, Y; Osakabe, M; Ozaki, T; Peterson, BJ; Sagara, A; Sakakibara, S; Sakamoto, R; Sasao, H; Sasao, M; Sato, K; Sato, M; Seki, T; Shimozuma, T; Shoji, M; Suzuki, H; Takeiri, Y; Tanaka, K; Toi, K; Tokuzawa, T; Tsumori, K; Tsuzuki, K; Yamada, I; Yamaguchi, S; Yokoyama, M; Watanabe, KY; Watari, T; Hamada, Y; Matsuoka, K; Murai, K; Ohkubo, K; Ohtake, I; Okamoto, M; Satoh, S; Satow, T; Sudo, S; Tanahashi, S; Yamazaki, K; Fujiwara, M; Iiyoshi, A;
Indirizzi:
Natl Inst Fus Sci, Toki, Gifu 5078292, Japan Natl Inst Fus Sci Toki Gifu Japan 5078292 Sci, Toki, Gifu 5078292, Japan
Titolo Testata:
PHYSICS OF PLASMAS
fascicolo: 5, volume: 6, anno: 1999,
parte:, 2
pagine: 1843 - 1850
SICI:
1070-664X(199905)6:5<1843:IPAOLH>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
RADIAL ELECTRIC-FIELD; BOOTSTRAP-CURRENT; ENERGY CONFINEMENT; STELLARATOR; PLASMA; MODE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Motojima, O Natl Inst Fus Sci, Oroshi Cho, Toki, Gifu 5078292, Japan Natl Inst Fus Sci Oroshi Cho Toki Gifu Japan 5078292 92, Japan
Citazione:
O. Motojima et al., "Initial physics achievements of large helical device experiments", PHYS PLASMA, 6(5), 1999, pp. 1843-1850

Abstract

The Large Helical Device (LHD) experiments [O. Motojima, et al., Proceedings, 16th Conference on Fusion Energy, Montreal, 1996 (International Atomic Energy Agency, Vienna, 1997), Vol. 3, p. 437] have started this year after a successful eight-year construction and test period of the fully superconducting facility. LHD investigates a variety of physics issues on large scale heliotron plasmas (R = 3.9 m, a = 0.6 m), which stimulates efforts to explore currentless and disruption-free steady plasmas under an optimized configuration. A magnetic field mapping has demonstrated the nested and healthystructure of magnetic surfaces, which indicates the successful completion of the physical design and the effectiveness of engineering quality controlduring the fabrication. Heating by 3 MW of neutral beam injection (NBI) has produced plasmas with a fusion triple product of 8 x 10(18) keV m(-3) s at a magnetic field of 1.5 T. An electron temperature of 1.5 keV and an ion temperature of 1.4 keV have been achieved. The maximum stored energy has reached 0.22 MJ, which corresponds to [beta] = 0.7%, with neither unexpected confinement deterioration nor visible magnetohydrodynamics (MHD) instabilities. Energy confinement times, reaching 0.17 s at the maximum, have shown atrend similar to the present scaling law derived from the existing medium sized helical devices, but enhanced by 50%. The knowledge on transport, MHD, divertor, and long pulse operation, etc., are now rapidly increasing, which implies the successful progress of physics experiments on helical currentless-toroidal plasmas. (C) 1999 American Institute of Physics. [S1070-664X(99)90605-5].

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 19:06:21