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Titolo:
Suppression of a pressure driven m=1 mode in a lower hybrid current drive plasma by electron cyclotron heating in the WT-3 tokamak
Autore:
Yoshimura, S; Watanabe, M; Tanabe, K; Nakayama, A; Asakawa, M; Maehara, T; Nakamura, M; Tanaka, H; Maekawa, T; Terumichi, Y;
Indirizzi:
Kyoto Univ, Grad Sch Sci, Dept Phys, Kyoto 6068502, Japan Kyoto Univ Kyoto Japan 6068502 Sch Sci, Dept Phys, Kyoto 6068502, Japan Osaka Univ, Grad Sch Engn, Plasma Phys Lab, Suita, Osaka 5650871, Japan Osaka Univ Suita Osaka Japan 5650871 hys Lab, Suita, Osaka 5650871, Japan Ehime Univ, Fac Sci, Dept Phys, Matsuyama, Ehime 7908577, Japan Ehime Univ Matsuyama Ehime Japan 7908577 Matsuyama, Ehime 7908577, Japan Osaka Inst Technol, Osaka 5358585, Japan Osaka Inst Technol Osaka Japan 5358585 nst Technol, Osaka 5358585, Japan Kyoto Univ, Grad Sch Energy Sci, Kyoto 6068501, Japan Kyoto Univ Kyoto Japan 6068501 Grad Sch Energy Sci, Kyoto 6068501, Japan
Titolo Testata:
PHYSICS OF PLASMAS
fascicolo: 1, volume: 7, anno: 2000,
pagine: 276 - 282
SICI:
1070-664X(200001)7:1<276:SOAPDM>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
TEARING MODES; SAWTOOTH STABILIZATION; ISLANDS; WAVES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Yoshimura, S Kyoto Univ, Grad Sch Sci, Dept Phys, Kyoto 6068502, Japan Kyoto Univ Kyoto Japan 6068502 t Phys, Kyoto 6068502, Japan
Citazione:
S. Yoshimura et al., "Suppression of a pressure driven m=1 mode in a lower hybrid current drive plasma by electron cyclotron heating in the WT-3 tokamak", PHYS PLASMA, 7(1), 2000, pp. 276-282

Abstract

A pressure driven m = 1/n = 1 mode is excited by lower hybrid current drive in the WT-3 tokamak [T. Maehara et al., Nucl. Fusion 38, 39 (1998)]. The excitation of the mode is accompanied with the decrease of the magnetic shear and with the peaking of the soft x-ray emissivity profile inside the q =1 surface. The crescent-shaped mode structure appeared on the contour map of the soft x-ray emissivity is consistent with that of the quasi-interchange mode. The m = 1 mode can be suppressed by electron cyclotron heating near the q = 1 surface. The range of the location of the electron cyclotron resonance layer effective for the complete suppression is much wider and the time scale for the suppression is much faster than those in the case of thesuppression of the tearing mode in the ohmic heating plasma. (C) 2000 American Institute of Physics. [S1070-664X(00)03301-2].

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Documento generato il 26/01/20 alle ore 22:05:16