Maximum Entropy Analysis of the 2D Density Turbulence Measured by MIR in TPE-RX
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概要
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Two-dimensional (2D) turbulence measurement by using microwave imaging reflectometry (MIR) has been performed in the reversed field pinch (RFP) plasma in TPE-RX. In this work, the maximum entropy method (MEM) is used to estimate the 2D k-spectrum. The turbulences between the pulsed poloidal current drive (PPCD) and the high Θ plasmas are studied. The m = 1 modes are dominant in PPCD plasma, while in high Θ plasma the k spectrum expands to the high k range and the turbulence propagates in the electron drift direction. The preliminary result shows that PPCD plasma switches off the turbulence, and the high Θ plasma has strong turbulence.
著者
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NAGAYAMA Yoshio
National Insitute for Fusion Science
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KUWAHARA Daisuke
Department of Energy Science, Tokyo Institute of Technology, Tokyo 152-8550, Japan
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YAMAGUCHI Soichiro
Kansai University, 3-3-35 Yamate, Suita 564-8680, Japan
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YOSHINAGA Tomokazu
National Institute for Fusion Science, 322-6 Oroshi, Toki 509-5292, Japan
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YOSHINAGA Tomokazu
National Institute for Fusion Science, Toki 509-5292, Japan
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SHI Zhongbing
The Graduate University for Advanced Studies, Toki 509-5292, Japan
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SUGITO Shoji
National Institute for Fusion Science, Toki 509-5292, Japan
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HIRANO Yoichi
Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan
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KOGUCHI Haruhisa
Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan
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KIYAMA Satoru
Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan
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SAKAKITA Hajime
Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan
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YAMBE Kiyoyuki
Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan
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MICHAEL Clive
UKAEA, Abingdon, Oxfordshire OX14 3DB, United Kingdom
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Hirano Yoichi
Advanced Device Development Dept., Renesas Technology Corp.
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