Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Experimental studies on NBI and ICRF heated plasmas in the large helical device
Autore:
Kawahata, K; Ohyabu, N; Kaneko, O; Komori, A; Yamada, H; Ashikawa, N; de Vries, P; Emoto, M; Funaba, H; Goto, M; Ida, K; Idei, H; Ikeda, K; Inagaki, S; Inoue, N; Isobe, M; Kado, S; Khlopenkov, K; Kubo, S; Kumazawa, R; Masuzaki, S; Minami, T; Miyazawa, J; Morisaki, T; Morita, S; Murakami, S; Muto, S; Nagayama, Y; Nakamura, Y; Nakanishi, H; Narihara, K; Nishimura, K; Noda, N; Notake, T; Kobuchi, T; Liang, Y; Ohdachi, S; Oka, Y; Osakabe, M; Ozaki, T; Pavlichenko, RO; Peterson, BJ; Sagara, A; Saito, K; Sakakibara, S; Sakamoto, R; Sasao, H; Sasao, M; Sato, K; Sato, M; Seki, T; Shimozuma, T; Shoji, M; Suzuki, H; Takechi, M; Takeiri, Y; Tamura, N; Tanaka, K; Toi, K; Tokuzawa, T; Torii, Y; Tsumori, K; Yamada, I; Yamaguchi, S; Yamamoto, S; Yokoyama, M; Yoshimura, Y; Watanabe, KY; Watari, T; Itoh, K; Matsuoka, K; Ohkubo, K; Ohtake, I; Satoh, S; Satow, T; Sudo, S; Tanahashi, S; Yamazaki, K; Hamada, Y; Motojima, O; Fujiwara, M;
Indirizzi:
Natl Inst Fus Sci, Gifu 5095292, Japan Natl Inst Fus Sci Gifu Japan 5095292 l Inst Fus Sci, Gifu 5095292, Japan Grad Univ Adv Studies, Hayama 2400193, Japan Grad Univ Adv Studies Hayama Japan 2400193 tudies, Hayama 2400193, Japan Nagoya Univ, Dept Energy Engn & Sci, Nagoya, Aichi 4648603, Japan Nagoya Univ Nagoya Aichi Japan 4648603 Sci, Nagoya, Aichi 4648603, Japan
Titolo Testata:
PLASMA PHYSICS AND CONTROLLED FUSION
, volume: 42, anno: 2000, supplemento:, 12B
pagine: B51 - B60
SICI:
0741-3335(200012)42:<B51:ESONAI>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Kawahata, K Natl Inst Fus Sci, Oroshi 322-6, Gifu 5095292, Japan Natl InstFus Sci Oroshi 322-6 Gifu Japan 5095292 5292, Japan
Citazione:
K. Kawahata et al., "Experimental studies on NBI and ICRF heated plasmas in the large helical device", PLASMA PHYS, 42, 2000, pp. B51-B60

Abstract

In the Large Helical Device (LHD), upgrading of the key hardware system since the last EPS conference has led to (1) higher T-e (T-e(0) = 4.4 keV at [n(e)] = 5.3 x 10(18) m(-3) and P-abs = 1.8 MW); (2) higher confinement (tau (E) = 0.3 s, T-e(0) = 1.1 keV at [n(e)] = 6.5 x 10(19) m(-3) and P-abs = 2 0 MW); (3) higher stored energy W-p(dia) = 880 kJ; and (4) the highest beta value in helical devices (2.4% at B = 1.3 T). The energy confinement wassystematically higher than that predicted by the International StellaratorScaling 95 up to a factor of 1.6. Ion cyclotron range of frequencies (ICRF) power up to 1.3 MW was reliably injected into the plasma without significant impurity contamination and a plasma with stored energy of 200 kJ was sustained for 5 s by ICRF alone. Long pulse discharges greater than 1 min in duration have been successfully achieved with ICRF power alone and with neutral beam injection (NBI) power alone. With NBI heating an 80 s discharge was achieved with a heating power of 0.5 MW at 2.75 T. The electron density was maintained at around 1.6 x 10(19) m(-3) by controlled gas puffing. The central electron and ion temperatures were kept around 1.5 keV. With ICRF heating, a similar long pulse discharge was achieved for 68 s with a heatingpower of 0.85 MW. The sustained plasma parameters are: W-p similar to 110 kJ, T-e(0) similar to T-i(0) = 2.0 keV and [n(e)] = 1.0 x 10(19) m(-3). During these discharges, no increase in radiation power has been observed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 06:17:05