Sawtooth stabilization by localized electron cyclotron heating in the WT-3 tokamak

Journal Article · Sun Nov 01 04:00:00 EST 1992 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860375· OSTI ID:6995823

Hanada, K; Maehara, T; Makino, K; Kishigami, Y; Kishino, T; Minami, T; Tanaka, H; Iida, M; Nakamura, M; Maekawa, T; Terumichi, Y; Tanaka, S ^[1]

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1. Department of Physics, Kyoto University, Kyoto 606 (Japan)

The effect on sawtooth oscillations (STO) by localized electron-cyclotron-resonance heating (ECH) on the WT-3 tokamak ({ital Plasma} {ital Physics} {ital and} {ital Controlled} {ital Nuclear} {ital Fusion} {ital Research}, 1988 (International Atomic Energy Agency, Vienna, 1989), Vol. 1, p. 563) is studied. STO are strongly modified or stabilized by ECH near the {ital q}=1 surface, where {ital q} refers to the safety factor. The effect of ECH is much stronger when it is applied on the high-field side as compared to the low-field side. Further, even when ECH is applied outside the {ital q}=1 surface, the amplitude of STO decreases and STO stabilizes. In the very high {ital q}{sub {ital L}} discharge, the excitation of STO can be obtained by applying ECH.

• OSTI ID: 6995823
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 4:11; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700340 -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
700350* -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
CLOSED PLASMA DEVICES
CONFINEMENT
CYCLOTRON RESONANCE
ELECTRON CYCLOTRON-RESONANCE
ENERGY-LEVEL TRANSITIONS
EXCITATION
HEATING
PLASMA CONFINEMENT
PLASMA HEATING
RESONANCE
STABILIZATION
THERMONUCLEAR DEVICES
TOKAMAK DEVICES