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

K. Hanada; T. Maehara; K. Makino; Y. Kishigami; T. Kishino; T. Minami; H. Tanaka; M. Iida; M. Nakamura; T. Maekawa; Y. Terumichi; S. Tanaka

doi:10.1063/1.860375

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

K. Hanada, T. Maehara, K. Makino, Y. Kishigami, T. Kishino, T. Minami, H. Tanaka, M. Iida, M. Nakamura, T. Maekawa, Y. Terumichi, S. Tanaka

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

The effect on sawtooth oscillations (STO) by localized electron-cyclotron- resonance heating (ECH) on the WT-3 tokamak [Plasma Physics and Controlled Nuclear Fusion Research, 1988 (International Atomic Energy Agency, Vienna, 1989), Vol. 1, p. 563] is studied. STO are strongly modified or stabilized by ECH near the q=1 surface, where 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 q=1 surface, the amplitude of STO decreases and STO stabilizes. In the very high q_L discharge, the excitation of STO can be obtained by applying ECH.

Original language	English
Pages (from-to)	3675-3688
Number of pages	14
Journal	Physics of Fluids B
Volume	4
Issue number	11
DOIs	https://doi.org/10.1063/1.860375
Publication status	Published - 1992
Externally published	Yes

All Science Journal Classification (ASJC) codes

Computational Mechanics
Condensed Matter Physics
Mechanics of Materials
Physics and Astronomy(all)
Fluid Flow and Transfer Processes

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10.1063/1.860375

Cite this

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title = "Sawtooth stabilization by localized electron cyclotron heating in the WT-3 tokamak",

abstract = "The effect on sawtooth oscillations (STO) by localized electron-cyclotron- resonance heating (ECH) on the WT-3 tokamak [Plasma Physics and Controlled Nuclear Fusion Research, 1988 (International Atomic Energy Agency, Vienna, 1989), Vol. 1, p. 563] is studied. STO are strongly modified or stabilized by ECH near the q=1 surface, where 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 q=1 surface, the amplitude of STO decreases and STO stabilizes. In the very high qL discharge, the excitation of STO can be obtained by applying ECH.",

author = "K. Hanada and T. Maehara and K. Makino and Y. Kishigami and T. Kishino and T. Minami and H. Tanaka and M. Iida and M. Nakamura and T. Maekawa and Y. Terumichi and S. Tanaka",

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doi = "10.1063/1.860375",

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TY - JOUR

T1 - Sawtooth stabilization by localized electron cyclotron heating in the WT-3 tokamak

AU - Hanada, K.

AU - Maehara, T.

AU - Makino, K.

AU - Kishigami, Y.

AU - Kishino, T.

AU - Minami, T.

AU - Tanaka, H.

AU - Iida, M.

AU - Nakamura, M.

AU - Maekawa, T.

AU - Terumichi, Y.

AU - Tanaka, S.

PY - 1992

Y1 - 1992

N2 - The effect on sawtooth oscillations (STO) by localized electron-cyclotron- resonance heating (ECH) on the WT-3 tokamak [Plasma Physics and Controlled Nuclear Fusion Research, 1988 (International Atomic Energy Agency, Vienna, 1989), Vol. 1, p. 563] is studied. STO are strongly modified or stabilized by ECH near the q=1 surface, where 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 q=1 surface, the amplitude of STO decreases and STO stabilizes. In the very high qL discharge, the excitation of STO can be obtained by applying ECH.

AB - The effect on sawtooth oscillations (STO) by localized electron-cyclotron- resonance heating (ECH) on the WT-3 tokamak [Plasma Physics and Controlled Nuclear Fusion Research, 1988 (International Atomic Energy Agency, Vienna, 1989), Vol. 1, p. 563] is studied. STO are strongly modified or stabilized by ECH near the q=1 surface, where 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 q=1 surface, the amplitude of STO decreases and STO stabilizes. In the very high qL discharge, the excitation of STO can be obtained by applying ECH.

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JO - Physics of Fluids B

JF - Physics of Fluids B

IS - 11

ER -

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

Abstract

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