Kyushu University Academic Staff Educational and Research Activities Database
List of Presentations
Makoto Sasaki Last modified date:2019.06.28

Assistant Professor / Division of Nuclear Fusion Dynamics / Research Institute for Applied Mechanics


Presentations
1. M. Sasaki, S. Inagaki, Y. Kawachi, F. Kin, H. Arakawa , Extraction of spatial structures of intermittent events using dynamical mode decomposition, 2nd International Conference on data driven plasma science, 2019.05.
2. M. Sasaki, On the spatial profile of turbulence in magnetically confined plasmas , ISEE, 2019.02.
3. M. Sasaki, T. Kobayashi, K. Itoh, N. Kasuya, Y. Kosuga, A. Fujisawa, S. Inagaki, S.-I. Itoh, Spatial structure of turbulence and flows in magnetically confined plasmas, Max-Planck Princeton Conference, 2019.02.
4. M. Sasaki, T. Kobayashi, K. Itoh, N. Kasuya, Y. Kosuga, A. Fujisawa, S. Inagaki, S.-I. Itoh, Spatiotemporal dynamics of turbulence with zonal flows, European Physical Society, 45th Conference on Plasma Physics, 2018.07.
5. M. Sasaki , Summary talk on Model reduction and experimental validation (for session E) , Asia-Pacific Transport Working Group (APTWG) international conference, 2018.06, 国際会議のセッションリーダとして「model validation and experimental verification」というグループをオーガナイズし、会議最終日にサマリートークを行った。また、会議のサマリー論文を共著で執筆し、Nuclear Fusion誌から出版された。.
6. M. Sasaki, Spatiotemporal dynamics of turbulence with zonal flows, 8th East-Asia School and Workshop on Laboratory, Space, and Astrophysical Plasmas (EASW8) , 2018.08.
7. M. Sasaki, Enhancement and suppression of turbulence by energetic‐particle‐driven geodesic acoustic modes, Electric Fields Turbulence and Self-Organization in Magnetised Plasmas (EFTSOMP), 2018.07.
8. M. Sasaki, K. Itoh, N. Kasuya, S. Inagaki, Y. Kosuga, T. Kobayashi, A. Fujisawa, S.-I. Itoh, Parallel flow driven instability due to toroidal return flow in H-mode plasmas , Asia-Pacific Transport Working Group (APTWG) international conference, 2018.06, We theoretically investigate turbulence in H-mode plasmas with the pressure gradient and the strong mean flow. The toroidal flow, which is induced by the poloidal mean flow so as to satisfy the divergence free condition, is strong in H- mode, thus the effect of the toroidal return flow on instabilities is considered. The proposed model self-consistently includes not only the destabilization of the drift wave and the parallel flow shear instability, called D’Angelo mode, but also the stabilization due to the poloidal flow shear. Depending on the strength of the flow shear or on the magnetic geometrical parameter, we obtain the stabilization of drift wave and the destabilization of the D’Angelo mode. The competition between different instabilities through coupling of the poloidal flow with the toroidal return flow could be a key concept for understanding the turbulence in H-mode. The characteristics of the instabilities are similar to the observations of the precursor of the type-III ELM..
9. M. Sasaki, K. Itoh, T. Ido, N. Kasuya, A. Shimizu, A. Fujisawa, S.-I. Itoh, Evaluation of line-integral effect of Heavy Ion Beam Probe measurement of energetic-particle driven geodesic acoustic modes, 26th International Toki Conference, 2017.12.
10. M. Sasaki, K. Itoh, K. Hallatschek, T. Kobayashi, N. Kasuya, M. Lesur, Y. Kosuga, S.-I. Itoh, Trapping of turbulence clumps by geodesic acoustic modes, 16th International workshop on H-mode Physics and transport barrier, 2017.09.
11. M. Sasaki, K. Itoh, K. Hallatschek, N. Kasuya, M. Lesur, Y. Kosuga S.-I. Itoh, Enhancement and suppression of turbulence by energetic-particle-driven geodesic acoustic modes, 7th Asia Pacific Transport Working Group International Conference, 2017.06.
12. M. Sasaki, N. Kasuya, K. Itoh, S. Toda, T. Yamada, Y. Kosuga, Y. Nagashima, T. Kobayashi, H. Arakawa, K. Yamasaki, A. Fujisawa, S. Inagaki, S.-I. Itoh, Topological bifurcation of turbulence driven flows in magnetized plasmas, 9th Festival de Theorie, 2017.06.
13. M. Sasaki, N. Kasuya, Y. Kosuga, K. Itoh, K. Hallatschek, M. Lesur, S.-I. Itoh, A new branch of geodesic acoustic modes driven by fast ions, 26th IAEA Fusion Energy Conference (FEC 2016), 2016.10.
14. M. Sasaki, N. Kasuya, K. Itoh, Y. Kosuga, K. Hallatschek, M. Lesur, S.-I. Itoh, Toroidal momentum transport by geodesic acoustic modes driven by fast ions, 6th Asia Pacific Transport Working Group International Conference, 2016.06.
15. M. Sasaki, N. Kasuya, S. Toda, T. Yamada, M. Yagi, K. Itoh, S.-I. Itoh, Bifurcation between flow driven instability and drift wave in cylindrical plasmas, 5th Asia Pacific Transport Working Group International Conference, 2015.06.
16. Makoto Sasaki, Naohiro Kasuya, Tatsuya Kobayashi, Hiroyuki Arakawa, Takuma Yamada, Kouhei Fukunaga, Masatoshi Yagi, Kimitaka Itoh, Sanae-I. Itoh, Formation mechanism of steep wave front in drift wave turbulence, 24th International Toki Conference, 2014.11.
17. Makoto Sasaki, Naohiro Kasuya, Kimitaka Itoh, Maxime Lesur, Sanae-I. Itoh, Eigenmode analysis of geodesic acoustic modes induced by energetic particles, 4th Asia Pacific Transport Working Group International Conference, 2014.06.
18. Makoto Sasaki, Naohiro Kasuya, Kimitaka Itoh, MASATOSHI YAGI, SANAE INOUE ITOH, Dynamical response of a poloidal flow with particle source modulation, H mode workshop, 2013.10.
19. Makoto Sasaki, Naohiro Kasuya, Kimitaka Itoh, MASATOSHI YAGI, SANAE INOUE(論文のみ) ITOH, Nonlinear competition of zonal flow, flute structure and streamer in resistive drift wave turbulence in cylindrical plasmas, 12th Asia Pacific Physics Conference , 2013.07.
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