Grant-in-Aid for Specially Promoted Research 2021-2026 (21H04973)
Exploration of new transport paradigms brought about by phase-space fluctuations in fusion plasmas

Result

Paper

    2025

  1. In-situ calibration of charge exchange spectroscopy for spatially resolved measurements of helium-hydrogen density ratio in Wendelstein 7-X

    M. Yoshinuma, K. Ida, O.P. Ford, P.Z. Poloskei, T. Romba, M. Zanini, J. Baldzuhn, K. Rahbarnia, H. Thomsen, U. Neuner, M. Zilker and W7-X Team
    Journal of Instrumentation 20 (2025) P07006
    DOI=10.1088/1748-0221/20/07/P07006

  2. Experimental discoveries of a variety of turbulent states of magnetic fusion plasma (CHANDRASEKHAR LECTURE)

    Katsumi Ida
    Reviews of Modern Plasma Physics (2025) 9:8
    DOI=10.1007/s41614-025-00186-7

  3. Development of Bounce-Time-Based Orbit-Following Monte-Carlo Code

    Kouji Shinohara et al.
    Plasma and Fusion Research 20 (2025) 1403017
    DOI=10.1585/pfr.20.1403017

  4. Nonlinear excitation of energetic particle driven geodesic acoustic mode by resonance overlap with Alfvén instability in ASDEX Upgrade

    Hao Wang et al.
    Scientific Reports 15 (2025) 1130
    DOI=s41598-024-82577-3

  5. Full-image operation of fast charge exchange recombination spectroscopy with high-spatial and high-wavelength resolutions in large helical device

    T. Kobayashi, M. Yoshinuma, K. Ida
    Review of Scientific Instruments 96 (2025) 033502
    DOI=10.1063/5.0251924

  6. Subcritical bifurcation and hysteresis of collisionless toroidal magnetized plasmas

    Y. Kosuga and K. Itoh
    J. Phys. Soc. Japan (2025) (6 pages)
    7. ▲
    2024

  7. Overview of Large Helical Device experiments of basic plasma physics for solving crucial issues in reaching burning plasma conditions

    K. Ida, M. Yoshinuma, M. Kobayashi, T. Kobayashi, et al.
    Nucl. Fusion 64 (2024) 112009
    DOI=10.1088/1741-4326/ad3a7a

  8. Fast Charge Exchange Spectroscopy for Measurements of Ion-Velocity-Space Distribution Function

    Mikirou YOSHINUMA, Katsumi IDA, Tatsuya KOBAYASHI
    Plasma Fusion Res. 19 (2024) 1402037
    DOI=10.1585/pfr.19.1402037

  9. Development of hyperspectral camera for auroral imaging (HySCAI)

    M. Yoshinuma, K. Ida, Y. Ebihara
    Earth, Planets and Space 76 (2024) 96
    DOI=10.1186/s40623-024-02039-y

  10. Preparatory study of feasibility for a vertical viewing electron cyclotron emission diagnostic for the JT-60SA Tokamak

    T. Tokuzawa, M. Yoshida, R. Imazawa, S. Nakagawa, S. Inagaki, F. Kin, S. Chiba, N. Suzuki, T. Nasu, A. Fujisawa and K. Ida
    Rev. Sci. Instrum 95 (2024) 083531
    DOI=10.1063/5.0218359

  11. Electron-scale turbulence characteristics with varying electron temperature gradient in LHD

    T. Nasu, T. Tokuzawa, M. Nakata, K. Ida, S. Inagaki, M. Nishiura, Y. Yoshimura, R. Yanai, K. Tanaka, M. Yoshinuma, T. Kobayashi, A. Ejiri, K.Y. Watanabe, I. Yamada and LHD Experiment Group
    Nucl. Fusion 64 (2024) 096008
    DOI=10.1088/1741-4326/ad5d7c

  12. Nonlinear excitation of energetic particle driven geodesic acoustic mode by Alfvén instability in ASDEX-Upgrade Tokamak

    Hao Wang et al.
    Nuclear Fusion 64 (2024) 076015
    DOI=10.1088/1741-4326/ad4a8d

  13. Detection of bifurcation in phase-space perturbative structures across transient wave-particle interaction in laboratory plasmas

    T. Kobayashi, M. Yoshinuma, W. Hu, and K. Ida
    The Proceedings of the National Academy of Sciences 121 (2024) e2408112121
    DOI=10.1073/pnas.2408112121

  14. New type of self-sustained divertor oscillation driven by magnetic island dynamics in Large Helical Device

    T. Kobayashi, M. Kobayashi, Y. Narushima, Y. Suzuki, K. Tanaka, G. Motojima, K. Y. Watanabe, K. Mukai, and Y. Hayashi
    Nuclear Fusion 64 (2024) 076059
    DOI=10.1088/1741-4326/ad5367

  15. Generation mechanism of Region 1 field-aligned current and energy transfer from solar wind to polar ionosphere

    Yusuke Ebihara et al.
    Reviews of Modern Plasma Physics 8:20 (2024)
    DOI=0.1007/s41614-024-00154-7

  16. Breathing impure plasmas

    Y. Kosuga, J. Bourgeois, M. Lesur, I. Oyama
    Plasma Phys. Control. Fusion 66 (2024) 075018. (10 pages)
    DOI=10.1088/1361-6587/ad5105

  17. Equilibrium Flow Structure with Multiple Ion Species in Magnetically Confined Plasmas of an Arbitrary Aspect Ratio

    Yusuke Kosuga
    J. Phys. Soc. Japan 93 064501 (2024) (10 pages)
    DOI=10.7566/JPSJ.93.064501

  18. Impurity Parallel Velocity Gradient instability

    J. Bourgeois, M. Lesur, G. Lazaro, Y. Kosuga
    Open Plasma Science, 1, 1 (2024)
    DOI=10.46298/ops.13628
    19. ▲
    2023

  19. Isotope effect of transport and key physics in the isotope mixture plasmas

    Katsumi Ida
    Reviews of Modern Plasma Physics 7 (2023) 23
    DOI=10.1007/s41614-023-00126-3

  20. Phase-space tomography in magnetically confined plasmas

    T. Kobayashi, M. Yoshinuma, W. Hu, K. Ida
    Physics of Plasmas 30 (2023) 052303
    DOI=10.1063/5.0146602

  21. New Q and V-band ECE radiometer for low magnetic field operation on LHD

    T. Tokuzawa, Y. Goto, D. Kuwahara, M. Nishiura, and T. Shimizu
    EPJ Web of Conferences 277 (2023) 03008
    DOI=10.1051/epjconf/202327703008

  22. Fast-sampling fast-ion D-alpha measurement using multi-anode photomultiplier tube in large helical device

    Y. Kawachi, K. Ogawa, M. Osakabe, Y. Kawamoto, M. Isobe, K. Ida
    Review of Scientific Instruments 94 (2023) 103505
    DOI=10.1063/5.0159175

  23. Simulation study of interaction between energetic particles and magnetohydrodynamic modes in the JT-60SA inductive scenario with a flat q≈1 profile

    Panith Adulsiriswad et al.
    Nuclear Fusion 63 (2023) 126030
    DOI=10.1088/1741-4326/acfcca

  24. Research Plan of Complex Global Simulation Unit

    Yasushi Todo et al.
    Plasma and Fusion Research 18 (2023) 2503067
    DOI=10.1585/pfr.18.2503067

  25. Waveform distortion of off-axis fishbone instability in the nonlinear magnetohydrodynamic evolution in tokamak plasmas

    Hanzheng Li et al.
    Nuclear Fusion 63 (2023) 086012
    DOI=10.1088/1741-4326/acdeff

  26. Prospect for Experimental Investigation of Phase-Space Turbulence in Magnetically Confined Fusion Plasmas

    Tatsuya Kobayashi
    Plasma and Fusion Research 18 (2023) 2402059
    DOI=10.1585/pfr.18.2402059

  27. A Comparison of Velocimetry Algorithms: Orthogonal Dynamic Programming Based Particle Image Velocimetry Versus Local Correlation Tracking

    T. Kobayashi, R. T. Ishikawa, M. Nakata, T. Oba, and Y. Katsukawa
    Plasma and Fusion Research 18 (2023) 1402058
    DOI=10.1585/pfr.18.1402058

  28. Prompt core confinement improvement across the L–H transition in DIII-D: Profile stiffness, turbulence dynamics, and isotope effect

    T. Kobayashi, Z. Yan, G. R. McKee, M. E. Austin, B. A. Grierson, and P. Gohil
    Physics of Plasmas 30 (2023) 032301
    DOI=10.1063/5.0137669

  29. Generation of field-aligned currents during substorm expansion: An update

    Y. Ebihara and T. Tanaka
    Journal of Geophysical Research Space Physics 128 (2023) e2022JA031011
    DOI=10.1029/2022JA031011
    30. ▲
    2022

  30. 3D Metal Powder Additive Manufacturing Phased Array Antenna for Multichannel Doppler Reflectometer

    T. Tokuzawa, T. Nasu, S. Inagaki, C. Moon, T. Ido, H. Idei, A. Ejiri, R. Imazawa, M. Yoshida, N. Oyama, K. Tanaka, and K. Ida
    Review of Scientific Instruments 93 (2022) 113535
    DOI=10.1063/5.0101723

  31. Development of the Q-band ECE Imaging system in the large helical device

    Y. Goto, T. Tokuzawa, D. Kuwahara, K. Ichinose, H. Tsuchiya, M. Nishiura, T. Shimizu, S. Kubo, I. Yamada
    Journal of Instrumentation 17 (2022) C01016
    DOI=10.1007/s41614-022-00064-6

  32. Charge exchange spectroscopy using spatial heterodyne spectrometer in the large helical device

    F.J. Arellanno, M. Yoshinuma, K. Ida
    Review of Scientific Instruments 93 (2022) 033503
    DOI=10.1063/5.0078417

  33. Application of Dual Frequency Comb Method as an Approach to Improve the Performance of Multi-Frequency Simultaneous Radiation Doppler Radar for High Temperature Plasma Diagnostics

    T. Tokuzawa, S. Inagaki, M. Inomoto, A. Ejiri, T. Nasu, T.I. Tsujimura, and K. Ida
    Applied Sciences 12 (2022) 4744
    DOI=10.3390/app12094744

  34. Receiver circuit improvement of dual frequency-comb ka-band Doppler backscattering system in the large helical device (LHD)

    T. Nasu, T. Tokuzawa, T.I. Tsujimura, K. Ida, M. Yoshinuma, T. Kobayashi, K. Tanaka, M. Emoto, S. Inagaki, A. Ejiri, and J. Kohagura
    Review of Scientific Instruments 93 (2022) 113518
    DOI=10.1063/5.0101588

  35. Direct observation of mass-dependent collisionless energy transfer via Landau and transit-time damping

    K. Ida, T. Kobayashi, M. Yoshinuma, K. Nagaoka, K. Ogawa, T. Tokuzawa, H. Nuga, and Yuto Katoh
    Communications Physics 5 (2022) 228
    DOI=10.1038/s42005-022-01008-9

  36. Non-local transport nature revealed by the research in transient phenomena of toroidal plasma

    Katsumi Ida
    Reviews of Modern Plasma Physics 6 (2022) 2
    DOI=10.1007/s41614-022-00064-6

  37. Self-sustained divertor oscillation driven by magnetic island dynamics in torus plasma

    T. Kobayashi, M. Kobayashi, Y. Narushima, Y. Suzuki, K.Y. Watanabe, K. Mukai, and Y. Hayashi
    Physical Review Letters 128 (2022) 085001
    DOI=10.1103/PhysRevLett.128.085001

  38. Behavior of geodesic acoustic mode and limit-cycle oscillation approaching L-H transition in JFT-2M tokamak

    T. Kobayashi, M. Sasaki, T. Ido, K. Kamiya, Y. Miura, K. Ida and K. Itoh
    Plasma Physics and Controlled Fusion 64 (2022) 114002
    DOI=10.1088/1361-6587/ac9333

  39. Hydrogen isotope effect on self-organized electron internal transport barrier criticality and role of radial electric field in toroidal plasmas

    T. Kobayashi, A. Shimizu, M. Nishiura, T. Ido, S. Satake, T. Tokuzawa, T.I. Tsujimura, K. Nagaoka, and K. Ida
    Scientific Reports 12, 5507 (2022)
    DOI=10.1038/s41598-022-09526-w

  40. Where is Region 1 field-aligned current generated?

    Y. Ebihara and T. Tanaka
    Journal of Geophysical Research Space Physics 127 (2022) e2021JA029991
    DOI=10.1029/2021JA029991

  41. A fate of nonlinear evolution of drift waves: Excitation of nonlinear breathers

    Y. Kosuga, S. Inagaki, and Y. Kawachi
    Phys. Plasmas 29 (2022) 122301. (15 pages)
    DOI=10.1063/5.0122295
    42. ▲
    2021

  42. Characteristics of plasma parameters and turbulence in the isotope-mixing and the non-mixing states in hydrogen–deuterium mixture plasmas in the large helical device

    K. Ida, M. Yoshinuma, K. Tanaka, M. Nakata, T. Kobayashi, Y. Fujiwara, R. Sakamoto, G. Motojima, S. Masuzaki and the LHD Experiment Group
    Nucl. Fusion 61 (2021) 016012
    DOI=10.1088/1741-4326/abbf62

  43. Measurements of radial profile of isotope density ratio using bulk charge exchange spectroscopy

    M. Yoshinuma, K. Ida, K. Yamasaki, J. Chen and I. Murakami
    Rev. Sci. Instrum. 92 (2021) 063509
    DOI=10.1063/5.0043607

  44. Penetration of MeV electrons into the mesosphere accompanying pulsating aurorae

    Y. Miyoshi, K. Hosokawa, S. Kurita, S.‐I. Oyama, Y. Ogawa, S. Saito, I. Shinohara, A. Kero, E. Turunen, P. T. Verronen, S. Kasahara, S. Yokota, T. Mitani, T. Takashima, N. Higashio, Y. Kasahara, S. Matsuda, F. Tsuchiya, A. Kumamoto, A. Matsuoka, T. Hori, K. Keika, M. Shoji, M. Teramoto, S. Imajo, C. Jun, S. Nakamura
    Scientific Reports 11 (2021) 13724
    DOI=10.1038/s41598-021-92611-3

  45. Formation of density corrugations due to zonal flow in wave-kinetic framework

    M. Sasaki, K. Itoh, B.F. McMillan, T. Kobayashi, H. Arakawa, and J. Chowdhury
    Physics of Plasmas 28 (2021) 112304
    DOI=10.1063/5.0055777

  46. Interactions of drift wave turbulence with streamer flows in wave-kinetic formalism

    M. Sasaki, H. Arakawa, T. Kobayashi, F. Kin, Y. Kawachi, T. Yamada, and K. Itoh
    Physics of Plasmas 28 (2021) 102304
    DOI=10.1063/5.0059839

  47. Numerical investigation on how heat flux avalanche jams trigger the staircase pattern formation

    Y. Kosuga, D. Koga, M. Sasaki
    Phys. Plasmas 28 (2021) 082302. (8 pages)
    DOI=10.1063/5.0053919

  48. Measurement of Anisotropic Electron Velocity Distribution Function in LHD by Polarization Spectroscopy

    M. Goto, N. Ramaiya, T. Oishi, Y. Kawamoto and T. Kawate
    Plasma and Fusion Research 16 (2021) 2402029
    DOI=10.1585/pfr.16.2402029

  49. Polarization of Lyman-α Line Due to the Anisotropy of Electron Collisions in a Plasma

    M. Goto and N. Ramaiya
    Symmetry 13 (2021) 297
    DOI=10.3390/sym13020297

  50. Measurement of polarization in Lyman- α line caused by anisotropic electron collisions in LHD plasma

    N. Ramaiya, M. Goto, Guillaume Seguineaud, T. Oishi, S. Morita
    Journal of Quantitative Spectroscopy and Radiative Transfer 260 (2021) 107430
    DOI=10.1016/j.jqsrt.2020.107430
    51. ▲

Presentation

    2025

  1. Spectrum of high-altitude blue auroral emissions observed with hyperspectral camera for auroral imaging (HySCAI) during astronomical twilight

    *Oral presentation

    K. Ida, M. Yoshinuma, Y. Ebihara, K. Shiokawa

    7-11 July 2025

    51th European Physical Society Plasma 2025 Conference, BSAP 6 - Space plasmas in Vilnius, Lithuania.

  2. Initial findings of aurora observation project using hyperspectral camera for are auroral imaging (HySCAI)

    *Invited talk

    K. Ida, M. Yoshinuma, Y. Ebihara, K. Shiokawa, Milan Šimek, Jiří Fujer

    14 June 2025

    Workshop on Plasma Physics and Chemistry: Hyperspectral Observation of Auroras, POSTECH, Pohang, South Korea.

  3. Development of Hyper Spectral Camera for Aurora Imaging (HySCAI)

    *Invited talk

    K. Ida, M. Yoshinuma, Y. Ebihara

    14 June 2025

    Workshop on Plasma Physics and Chemistry: Hyperspectral Observation of Auroras, POSTECH, Pohang, South Korea.

  4. Development of Hyper Spectral Camera for Aurora Imaging (HySCAI) and initial aurora observation result in Kiruna, Sweden

    *Plenary talk

    K. Ida, M. Yoshinuma, Y. Ebihara, K. Shiokawa, Milan Šimek, Jiří Fujer

    12 June 2025

    4th International Fusion and Plasma Conference, Daejeon, Convention Center, Daejeon, South Korea.

  5. Development of Hyper Spectral Camera for Aurora Imaging (HySCAI) and initial aurora observation result in Kiruna, Sweden

    K. Ida, M. Yoshinuma, Y. Ebihara, K. Shiokawa, Milan Šimek, Jiří Fujera

    11 June 2025

    Seminar at Korea Astronomy and Space Science Institute, Daejeon, South Korea.

  6. Transport and turbulence in 3D magnetic topology 〜Impact of magnetic island on transport~

    *Plenary talk

    Katsumi Ida

    30 May 2025

    11th Asia-Pacific Transport Working Group Meeting, Shenzhen, China.

  7. OI(1D) and N2 1PG spectra of the red aurora observed by HyperSpectral Camera for Auroral Imaging (HySCAI)

    *Oral presentation

    K. Ida, M. Yoshinuma, Y. Ebihara, M. Šimek, J. Fujera

    28 May 2025

    Japan Geoscience Union Meeting (JpGU), Dynamics of the Inner Magnetospheric System [P-EM13], Makuhari, Japan.

  8. Spectrum of high-altitude blue auroral emissions observed with hyperspectral camera for auroral imaging (HySCAI) during astronomical twilight

    *Oral presentation

    K. Ida, M. Yoshinuma, Y. Ebihara, K. Shiokawa

    26 May 2025

    Japan Geoscience Union Meeting (JpGU), Coupling Processes in the Atmosphere-Ionosphere System [P-EM12], Makuhari, Japan.

  9. Development of Hyperspectral Camera for Aurora Imaging(HySCAI) ~Interdisciplinary application of visible spectrometer developed for magnetically confined plasma to astrophysical plasma~

    *Plenary talk

    K. Ida, M. Yoshinuma, Y. Ebihara

    7-10 April 2025

    6th European Conference on Plasma Diagnostics, Prague, Czech Republic.

    10. ▲
    2024

  10. Active and passive visible spectroscopy in fusion plasmas

    *Invited talk

    Katsumi Ida

    9-13 December 2024

    13th ITER International School, Nagoya Prime Center Tower.

  11. Measurement of charge-exchanged energetic neutrals using Si-detector for direct evaluation of wave particle interactions in a torus plasma

    *Poster presentation

    M. Matsuoka, K. Nagaoka, M. Osakabe, K.Ogawa, M. Isobe, R.T. Ishikawa, and Y. Katoh

    9-13 December 2024

    13th ITER International School, Nagoya Prime Center Tower.

  12. Breathing Laboratory Plasmas

    Yusuke Kosuga

    4 November 2024

    8th Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2024), Malacca, Malaysia.

  13. Phase-space tomography for charge exchange recombination spectroscopy

    *Invited talk

    Tatsuya Kobayashi

    3-8 November 2024

    8th Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2024), Malacca, Malaysia.

  14. Modeling for a magnetically driven self-sustained divertor oscillation

    *Oral presentation

    T. Kobayashi, M. Kobayashi, Y. Narushima, Y. Suzuki, K.Y. Watanabe, K. Mukai, Y. Hayashi

    30 September- 3 October 2024

    44th ITPA Pedestal and Edge Physics (PEP) TG meeting, Naka, Japan.

  15. Multi-scale turbulence response during L-H transition in LHD

    T. Tokuzawa, T. Nasu, D. Nishimura, K. Ida, M. Yoshinuma, T. Kobayashi, K. Tanaka, S. Inagaki, A. Fujisawa, I. Yamada and LHD Experiment Group

    24-27 September 2024

    19th International Workshop on H-mode Physics and Transport Barriers, Mito, Ibaraki, Japan.

  16. Study of multi-scale turbulence response during L-H transition in LHD

    *Invited talk

    T. Tokuzawa, T. Nasu, D. Nishimura, K. Ida, M. Yoshinuma, T. Kobayashi, K. Tanaka, S. Inagaki, A. Fujisawa, I. Yamada and LHD Experiment Group

    9-13 September 2024

    24th International Stellarator Heliotron Workshop, Hiroshima, Japan.

  17. Transport properties of high ion temperature plasma scenario on LHD

    *Invited talk

    Katsumi Ida

    16–19 July 2024

    The 2nd International Workshop on the Quest for Proton-Boron Fusion, Zushan, Qinhuangdao China.

  18. Overview of charge exchange spectroscopy

    Katsumi Ida

    15 July 2024

    Seminar at ENN Energy research Institute, Langfang, Hebei, China.

  19. Predator-prey model for a self-sustained divertor oscillation driven by magnetic island dynamics

    *Poster presentation

    Tatsuya Kobayashi

    8-12 July 2024

    50th Europe Physical Society (EPS) Conference on Plasma Physics, Basic, Space & Astrophysical Plasmas, Salamanca, Spain.

  20. Direct observation of collisionless energy transfer from MHD wave to ions via Landau and transit-time damping in laboratory plasma

    *Oral presentation

    K. Ida, T. Kobayashi, M. Yoshinuma, K. Nagaoka, K. Ogawa, T. Tokuzawa, H. Nuga, and Y. Katoh

    8–12 July 2024

    50th Europe Physical Society (EPS) Conference on Plasma Physics, Basic, Space & Astrophysical Plasmas, Salamanca, Spain.

  21. Feasibility study on fast CXRS

    *Oral presentation

    K. Ida and M. Yoshinuma

    19 June 2024

    JT-60SA technical committee meeting (TCM), QST, Naka.

  22. Spontaneous Plasma Confinement Transition in Magnetically Confined Fusion Plasmas

    *Invited talk

    Tatsuya Kobayashi

    22-26 April 2024

    International Conference on High Energy Density Sciences 2024, Yokohama, Japan.

  23. Experimental discoveries of a variety of turbulent states of magnetic fusion plasma

    Katsumi Ida

    18 April 2024

    Seminar at Forschungszentrum Jülich, Germany.

  24. Overview: Magnetic island and transport

    *Invited talk

    Katsumi Ida

    15-17 April 2024

    Stochasticity in Fusion Plasmas (SFP), Physikzentrum, Bad Honnef, Germany.

  25. Experimental Spectroscopy for Fusion Applications

    *Invited talk

    Motoshi Goto

    18-22 March 2024

    Joint ICTP-IAEA School on Data for Modeling Atomic and Molecular Processes in Plasmas, Trieste, Italy.

  26. Shortcomings of the "conventional approach" to transport modeling as revealed by experiments.

    Anti-diffusive dynamics: from sub-cellular to astrophysical scales Layering in Magnetized Plasmas.

    *Oral presentation

    Katsumi Ida

    19–23 February 2024

    Isaac Newton Institute for Mathematical Science, University of York, UK.

    27. ▲
    2023

  27. Formation and collapse of electron internal transport barrier

    Katsumi Ida

    19 December 2023

    Special Seminar in Huazhong University of Science and Technology (HUST), International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics (IFPP).

  28. Internal transport barrier in tokamak and helical plasmas

    Katsumi Ida

    12 December 2023

    Special Seminar in Huazhong University of Science and Technology (HUST), International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics (IFPP).

  29. Isotope effect of transport and key physics in the isotope mixture plasmas

    Katsumi Ida

    5 December 2023

    Special Seminar in Huazhong University of Science and Technology (HUST), International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics (IFPP).

  30. A review of phase space turbulence: why it is important

    Yusuke Kosuga

    13 November 2023

    7th Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2023), Port Messe Nagoya, Japan.

  31. Phase-space tomography as a tool for high-resolution phase-space measurement

    *Invited talk

    Tatsuya Kobayashi

    12-17 November 2023

    7th Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2023), Port Messe Nagoya, Japan.

  32. Experimental discoveries of a variety of turbulent states of magnetic fusion plasma

    *Plenary talk

    Katsumi Ida

    12-17 November 2023

    Subrahmanyan Chandrasekhar Prize of Plasma Physics Lecture, 7th Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2023), Port Messe Nagoya, Japan.

  33. Electron temperature anisotropy in magnetically confined fusion plasma

    *Invited talk

    M. Goto, N. Ramaiya, T. Oishi, Y. Kawamoto, T. Kawate

    12-17 November 2023

    7th Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2023), Port Messe Nagoya, Japan.

  34. First light results of 2D Spectroscopy System for Aurora Observation

    Katsumi Ida

    31 October 2023

    Aurora meeting at Sweden Institute of Space Physics (IRF), Kiruna, Sweden.

  35. Direct Observation of Landau/Transit-time Damping And Collisionless Energy Transfer in Laboratory Plasma

    K. Ida, T. Kobayashi, M. Yoshinuma , K. Nagaoka, K. Ogawa, T. Tokuzawa, H. Nuga, and Y. Katoh

    26 October 2023

    Lecture at Southwestern Institute of Physics, China.

  36. ELECTRON-SCALE TURBULENCE CHARACTERISTICS IN LHD PLASMA

    *Oral presentstion

    T. Nasu, T. Tokuzawa, M. Nakata, K. Ida, T. Kobayashi, S. Inagaki, Y. Yoshimura, M. Nishiura, K. Tanaka, R. Yanai, M. Yoshinuma, K.Y. Watanabe, I. Yamada, A. Ejiri

    16-21 October 2023

    29th IAEA Fusion Energy Conference (FEC 2023), London.

  37. Overview of Large Helical Device experiments of basic plasma physics for solving future issues in nuclear fusion research

    *Oral presentation

    Katsumi Ida and LHD experiment group

    16 October 2023

    29th IAEA Fusion Energy Conference (FEC 2023), London.

  38. Overview results from Large Helical Device deuterium campaigns on basic plasma physics for solving future issues in burning plasma

    Katsumi Ida

    27 September 2023

    Charkiw Lecture.

  39. Overview results from Large Helical Device deuterium campaigns on basic plasma physics for solving future issues in burning plasma

    *Invited talk

    Katsumi Ida

    18-22 September 2023

    PLASMA 2023, Warsaw, Poland.

  40. GAM eigenmode observation by ECE Imaging diagnostics on LHD

    *Poster presentation

    T. Tokuzawa, D. Kuwahara, Y. Goto, R. Yanai, A. Shimizu, T. Ido, M.Nishiura, I. Yamada, and LHD Experiment Group

    3-7 July 2023

    The 49th European Conference on Plasma Physics, Bordeaux Convention Center, France.

  41. Isotope effect of transport and key physics in the isotope mixture plasmas

    *Plenary talk

    Katsumi Ida

    13-16 June 2023

    10th Asia Pacific Transport Working Group (APTWG) 2023, Hanyang University, Korea.

  42. Experimental progresses on understanding for global nature of confinement transition in toroidal plasmas

    *Invited talk

    Tatsuya Kobayashi

    13-16 June 2023

    10th Asia Pacific Transport Working Group (APTWG) 2023, Hanyang University, Korea.

  43. Millimeter-wave scattering measurement system for verifying anisotropy and interactions between scales in microscale turbulence

    *Invited talk

    T. Tokuzawa, T. Nasu, R. Yanai, S. Kubo, K. Tanaka, M. Emoto, S. Inagaki, K. Ida, M. Yoshinuma, K.Y. Watanabe, A. Ejiri, T. Saito, G. Furuya, R. Imazawa, M. Yoshida, and LHD Experiment Group

    23-27 April 2023

    The 5th European Conference on Plasma Diagnostics (ECPD), Rethymno, Crete, Greece.

  44. Direct observation of Landau/transit-time damping and collisionless energy transfer in laboratory plasma

    K. Ida, T. Kobayashi, M. Yoshinuma, K. Nagaoka, K. Ogawa, T. Tokuzawa, H. Nuga, and Y. Katoh

    16-17 March 2023

    Joint Workshop of "Physics and application of whistler waves" and "Future perspective of study on nonlinear wave-particle interaction", Kyoto University.

  45. Academic research on turbulence and abrupt instability of isotope mixture plasmas in Large Helical Device (LHD)

    Katsumi Ida

    26-27 January 2023

    Japan-Korea KSTAR Diagnostics Collaboration Meeting KFE, Daejeon, Korea.

    46. ▲
    2022

  46. Academic research on turbulence and abrupt instability of isotope mixture plasmas in Large Helical Device (LHD)

    Katsumi Ida

    14 December 2022

    IAEA Webinar Episode 3.

  47. Academic research on turbulence and abrupt instability of isotope mixture plasmas in Large Helical Device (LHD)

    Katsumi Ida

    8 December 2022

    Fusin Power Association (FPA), 43rd Annual Meeting and Symposium.

  48. Direct Observation of Landau/Transit-time Damping And Collisionless Energy Transfer in Laboratory Plasma

    *Invited talk

    K. Ida, T. Kobayashi, M. Yoshinuma, K. Nagaoka, K. Ogawa, T. Tokuzawa, H. Nuga, and Y. Katoh

    28 November– 2 December 2022

    20th International Congress on Plasma Physics (ICPP) Gyeongju, Korea.

  49. Organized session for phase-space turbulence unit

    8-11 November 2022, online

    • Research plan of phase-space turbulence unit (T. Kobayashi)
    • Development plan and status of phase-space diagnostics in high temperature plasma (T. Tokuzawa)
    • Nonlinear kinetics: from isolated hole-clump pairs to phase-space turbulence (M. Lesur)
    • Strong plasma wave excitation by an intense, short laser pulse and challenge to high-energy and high-brightness electron beams (M. Kando)

    31st International Toki Conference (ITC) on Plasma and Fusion Research.

  50. Electron temperature anisotropy explored by the impact polarization of the Lyman-alpha line in fusion plasma

    *Keynote talk

    M. Goto, N. Ramaiya, T. Oishi, Y. Kawamoto, T. Kawate

    7-11 November 2022

    10th Solar Polarization Workshop, Kyoto, Japan.

  51. Impact of turbulence spreading on structure formation in toroidal plasma

    Katsumi Ida

    27 October 2022

    Special Seminar in Huazhong University of Science and Technology (HUST), International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics (IFPP).

  52. Non-local transport nature revealed by the research in transient phenomena of toroidal plasma

    Katsumi Ida

    17 October 2022

    Special Seminar in Huazhong University of Science and Technology (HUST), International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics (IFPP).

  53. Excitation of nonlinear breathers in magnetized plasmas

    Yusuke Kosuga

    12 October 2022

    6th Asia Pacific Conference on Plasma Physics (AAPPS-DPP2022), online.

  54. Impact of turbulence spreading on structure formation in toroidal plasma

    *Plenary talk

    Katsumi Ida

    9-14 October 2022

    6th Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2022), online.

  55. Electron temperature anisotropy in fusion plasma explored by polarization spectroscopy

    *Invited talk

    M. Goto, N. Ramaiya, T. Oishi, Y. Kawamoto, T. Kawate

    25-29 September 2022

    12th International Conference on Atomic and Molecular Data and Their Applications, Mola di Bari, Italy.

  56. Edge turbulence excitation experiments in LHD

    *Poster presentation

    T. Tokuzawa, T.I. Tsujimura, M. Nishiura, H. Igami, S. Inagaki, T. Nasu, K. Ida, T. Kobayashi, M. Yoshinuma, K. Tanaka, Y. Takemura, I. Yamada, and LHD Experiment Group

    20-23 September 2022

    18th International Workshop on H-mode Physics and Transport Barriers (H-mode Workshop), Princeton University.

  57. Summary of 23th LHD experimental campaign

    *Invited talk

    Katsumi Ida

    15 September 2022

    10th Japan-Korea Seminar on Advanced Diagnostics for Steady-State Fusion Plasmas National Institute for Fusion Science.

  58. Recent developments of ECE radiometer and ECEI for low magnetic field strength operation on LHD

    *Oral presentation

    T. Tokuzawa, Y. Goto, D. Kuwahara, M. Nishiura, R. Yanai, and LHD Experiment Group

    20-24 June 2022

    21st Joint Workshop on Electron Cyclotron Emission (ECE) and Electron Cyclotron Resonance Heating (ECRH), EC21, ITER Organization, France.

  59. Characteristics of 3D metal powder additive manufacturing waveguides and antenna for microwave Doppler reflectometry and trial experiments at PANTA

    *Oral presentation

    T. Tokuzawa, T. Nasu, S. Inagaki, C. Moon, T. Ido, H. Idei, A. Ejiri, R. Imazawa, M. Yoshida, N. Oyama, K. Tanaka, and K. Ida

    7–10 June 2022

    15th International Reflectometry Workshop (IRW15), ITER Organization HQ, France.

  60. 3D Metal Powder Additive Manufacturing Phased Array Antenna for Multichannel Doppler Reflectometer

    *Poster presentation

    T. Tokuzawa, T. Nasu, S. Inagaki, C. Moon, T. Ido, H. Idei, A. Ejiri, R. Imazawa, M. Yoshida, K. Tanaka, and K. Ida

    15-19 May 2022

    High-Temperature Plasma Diagnostics 2022, hybrid format hosted by The University of Rochester, USA.

    61. ▲
    2021

  61. Magnetic island as turbulence spreading barrier in toroidal plasma

    Katsumi Ida

    15 December 2021

    Special Seminar in Huazhong University of Science and Technology (HUST), International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics (IFPP).

  62. Bipolar velocity-space signature of ion Landau damping

    K. Ida, T. Kobayashi, M. Yoshinuma, K. Nagaoka, K. Ogawa, T. Tokuzawa, H. Nuga, and Y. Katoh

    17 November 2021

    30th International Toki Conference (ITC) on Plasma and Fusion Research, online.

  63. Observation of Landau damping in velocity space of thermal ion in LHD

    Katsumi Ida

    10 November 2021

    Special Seminar in Huazhong University of Science and Technology (HUST), International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics (IFPP).

  64. Fast CXRS and vertical ECE

    K. Ida, T. Tokuzawa, Y. Todo, M. Yoshida

    9 November 2021

    Mini-RCM.

  65. Observation of Landau damping in velocity space of thermal ion in LHD

    *Plenary talk

    Katsumi Ida

    1 October 2021

    5th Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2021), online.

  66. Controlled turbulence excitation in LHD plasma edge region

    *Invited talk

    T. Tokuzawa, T.I. Tsujimura, M. Nishiura, H. Igami, S. Inagaki, K. Ida, T. Kobayashi, M. Yoshinuma, K. Tanaka, Y. Goto, Y. Takemura, A. Ejiri, I. Yamada, and LHD Experiment Group

    26 September- 1 October 2021

    5th Asia-Pacific Conference on Plasma Physics (AAPPS-DDP2021), online.

  67. Polarization spectroscopy for the study of plasma anisotropy in LHD

    *Invited talk

    M. Goto, N. Ramaiya, T. Oishi, Y. Kawamoto, T. Kawate

    26 September- 1 October 2021

    5th Asia-Pacific Conference on Plasma Physics (AAPPS-DDP2021), online.

  68. Introduction to LHD diagnostics

    *Invited talk

    Tokihiko Tokuzawa

    6-10 September 2021

    International Conference on DIAGNOSTICS FOR FUSION REACTORS, Villa Monastero, Varenna, Italy.

  69. Beam Spectroscopy in Plasma

    Katsumi Ida

    29 July 2021

    International Polytechnic-SOKENDAI Summer School on "Plasma Physics and Controlled Fusion and Advances in Nuclear Fusion Science".

  70. Transition between isotope-mixing and non-mixing states in hydrogen- deuterium mixture plasmas in the Large Helical Device

    K. Ida, M. Yoshinuma, K. Tanaka, M. Nakata, T. Kobayashi, Y. Fujiwara, R. Sakamoto, G. Motojima, S. Masuzaki

    10-15 May 2021

    28th IAEA Fusion Energy Conference (FEC 2020), online.

  71. How heat flux avalanche jams trigger layering in magnetized plasmas

    Yusuke Kosuga

    9 Feburary 2021

    Kavli Institute for Theoretical Physics, conference on "Is There a Common Thread to Layering in Atmospheres, Oceans and Plasmas?".

    72. ▲

Award

  1. 10th Subrahmanyan Chandrasekhar Prize of Plasma Physics

    Katsumi Ida

    13 November 2023

    https://www.aappsdpp.org/AAPPSDPPF/PDF/S.Chandrasekharprize_2023.pdf

  2. 2021 IUPAP Young Scientist Award in Plasma Physics

    Tatsuya Kobayashi

    4 December 2021

    https://iupap.org/2021/10/07/iupap-young-scientist-prize-in-plasma-physics-2021/
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