Kyushu University Academic Staff Educational and Research Activities Database
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Takumi Onchi Last modified date:2023.11.22

Graduate School
総合理工学府 プラズマ・量子理工学メジャー 

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 Reseacher Profiling Tool Kyushu University Pure
Advanced Fusion Research Center .
Interdisciplinary Graduate School of Engineering Sciences .
Academic Degree
Country of degree conferring institution (Overseas)
Field of Specialization
Plasma Engineering
ORCID(Open Researcher and Contributor ID)
Total Priod of education and research career in the foreign country
Research Interests
  • Electron cyclotron heating/current-drive on QUEST spherical tokamak
    keyword : Plasma, Spherical tokamak, RF plasma heating/current-drive
  • Power electronics for Tokamak Ohmic heating
    keyword : High voltage power supply, power electronics, Tokamak
  • Permutation entropy and statistical complexity of time series data in plasma experiment
    keyword : Permutation entropy, statistical complexity
Academic Activities
1. Evaluation of Time-Series Data Using Permutation Entropy and Statistical Complexity.
1. T. Onchi, A. Fujisawa, A. Sanpei, H. Himura, S. Masamune, and RELAX team, Permutation entropy and statistical complexity in characterising low-aspect-ratio reversed-field pinch plasma, Physica Scripta,, 92, 5, 055601, 2017.04.
2. Takumi Onchi, D. McColl, A. Rohollahi, C. Xiao, A. Hirose, M. Dreval, S. Wolfe, Development Toward a Repetitive Compact Torus Injector, IEEE Transactions on Plasma Science, 44, 2, 195, 2016.02.
3. T. Onchi, Y. Liu, M. Dreval, D. McColl, S. Elgriw, D. Liu, T. Asai, C. Xiao, A. Hirose, Effects of compact torus injection on toroidal flow in the STOR-M tokamak, Plasma Physics and Controlled Fusion, 55, 3, 035003, 2013.03.
4. T. Onchi, R. Ikezoe, K. Oki, A. Sanpei, H. Himura, S. Masamune, Tangential soft-x ray imaging for three-dimensional structural studies in a reversed field pinch, Review of Scientific Instruments, 81, 7, 073502, 2010.07.
Membership in Academic Society
  • American Physical Society
  • The Physical Society of Japan
  • The Japan Society of Plasma Science and Nuclear Fusion Research