Tomography as a promising diagnostic tool for plasma turbulence

A. Fujisawa, Y. Nagashima, S. Inagaki, T. Onchi, S. Ohshima, A. Shimizu

研究成果: Contribution to journalArticle査読

22 被引用数 (Scopus)

抄録

A system for plasma turbulence tomography has been developed in a linear cylindrical plasma as a prototype with aiming at future application on toroidal plasma of higher temperature. This paper describes the diagnostic system in both aspects of the soft- and hardware, and reports the first results of tomographic reconstruction that can successfully produce local emission and its fluctuations. In the reconstruction process, two dimensional view of plasma is obtained for approximately 0.6 ms in every sampling time of 1 μs using parallel processing of 120 cores with 10 personal computers. The results include the steady state analysis of local fluctuation power spectra using fast Fourier transform, analysis of temporal behavior of fluctuation power spectra with wavelet transform, and analyses of the structural deformation or pattern of local plasma emission, demonstrating that the success of tomography as a promising diagnostic tool for plasma turbulence.

本文言語英語
論文番号025005
ジャーナルPlasma Physics and Controlled Fusion
58
2
DOI
出版ステータス出版済み - 1 11 2016

All Science Journal Classification (ASJC) codes

  • 原子力エネルギーおよび原子力工学
  • 凝縮系物理学

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