<RESEARCH REPORT>Limits of Possible Operation of the R-Tokamak Due to Ideal MHD Instabilities
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概要
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A series of MHD stability calculations has been made with the ERATO code to know the maximum β which can be expected for the R-Tokamak using the parameters of the second phase design (an aspect ratio of 2.75,ellipticity of 1.8 and triangularity of 0.3). The highest β obtained under the condition that both the n=1 free boundary mode (with no wall stabilization) and the n=∞ ballooning modes are stable is about 6% at q_s≃2.0 and q_0 at the Mercier limit on axis. This result has been found by performing some optimization of the current and pressure profiles. If only the ballooning modes are concerned, the limiting β becomes 8.6%. The sensitivity of the result to elongation has been studied. It has been found that the maximum β increases and then decreases with elongation. The optimum β is obtained for an elongation of 1.8 if both the n=1 kink and n=∞ ballooning limits are considered and of 2.0 if only ballooning modes are considered. These results are compared with proposed scaling laws.
- 核融合科学研究所の論文
著者
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Troyon F.
Research Information Center Institute Of Plasma Physics Nagoya University:center De Recherches En Ph
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Abe Y.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Yamazaki K.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Naitou H.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Takemoto Y.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Gruber R.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Saurenmann H.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Saurenmann H.
Research Information Center Institute Of Plasma Physics Nagoya University:center De Recherches En Ph
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Gruber R.
Research Information Center Institute Of Plasma Physics Nagoya University:center De Recherches En Ph
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Naitou H.
Reseach Information Center Institute Of Plasma Physics Nagoya University
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Takemoto Y.
Reseach Information Center Institute Of Plasma Physics Nagoya University
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