Singular Value Decomposition Analysis of Multichannel Electron Cyclotron Emission Signals of Tokamak Plasma
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概要
- 論文の詳細を見る
Singular value decomposition (SVD) was applied to multichannel signals obtained by an electron cyclotron emission diagnostic system in the JT-60U tokamak. As a result, on grating polychromator signals, the equilibrium and perturbative terms of electron temperature profile were successfully separated, and the structure of a magnetic island produced by the tearing mode was revealed. By neglecting the components of small singular values, the noise component of the signals was removed to improve the signal-to-noise ratio while conserving well the pulse-like waveforms. The usefulness of the SVD-based spectral analysis is shown by a typical set of signal waveforms.
- INSTITUTE OF PURE AND APPLIED PHYSICSの論文
- 2003-03-15
著者
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Sato Masayasu
Naka Fusion Research Establishment Japan Atomic Energy Research Institute
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Isei Nobuaki
Naka Fusion Research Establishment Japan Atomic Energy Research Institute
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Iwama Naofumi
School Of Informatics Daido Institute Of Technology
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Satake Shinsuke
Department Of Electronics And Informatics Faculty Of Engineering Toyama Kenritsu University
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Ishida Shinichi
Naka Fusion Research Establishment Japan Atomic Energy Research Institute
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Hosoda Yohsuke
Department Of Information Science Faculty Of Engineering Fukui University
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Isayama Akihiko
Naka Fusion Research Establishment Japan Atomic Energy Research Institute
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Ishida Shinichi
Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
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Iwama Naofumi
School of Informatics, Daido Institute of Technology, 10-3 Takiharu, Minami-ku, Nagoya 457-8531, Japan
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Satake Shinsuke
Department of Electronics and Informatics, Faculty of Engineering, Toyama Kenritsu University, 5180 Kurokawa, Kosugi-machi, Imizu-gun, Toyama 939-0398, Japan
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Hosoda Yohsuke
Department of Information Science, Faculty of Engineering, Fukui University, 3-9-1 Bunkyo, Fukui 910-8507, Japan
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Isei Nobuaki
Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
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