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Develooment of multi-hierarchy simulation models and investigation of plasma cross-hierarchy phenomena

Research Project

Project/Area Number 16K17847
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Plasma science
Research InstitutionNational Institute for Fusion Science

Principal Investigator

Usami Shunsuke  核融合科学研究所, ヘリカル研究部, 准教授 (80413996)

Project Period (FY) 2016-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords多階層 / 磁気リコネクション / 不安定性 / 球状トカマク / 多階層モデル / 圧力駆動型不安定性 / 粒子モデル / プラズマ加熱 / 多階層シミュレーション
Outline of Final Research Achievements

We have developed and improved multi-hierarchy simulation models self-consistently solving macroscopic and microscopic hierarchies, which are divided into two types, i.e., the real space division method and the parameter renormalization method. In addition, for the basis of the multi-hierarchy models, we have clarified detailed physics in the downstream of magnetic reconnection. For the real space division method, we have employed the domain dynamic conversion, inserted the mesoscopic hierarchy, and extended the macroscopic hierarchy method. For the parameter renormalization method, we have modeled kinetic effects of instabilities such as the drift kink instability, by using a particle model. On the other hand, we have performed particle simulations in almost the entire system which mimics plasma merging in a spherical tokamak device and demonstrated global plasma processes.

Academic Significance and Societal Importance of the Research Achievements

多階層シミュレーションは、気象学、宇宙天気予報、医学、自動車設計などの工学についても有効な手段である。開発・改良された多階層モデルには様々な分野への適用につながる汎用的な側面が多い。また、多階層モデルを支える基礎として、磁気リコネクションに関する知見を積み上げた。磁気リコネクションは様々なプラズマで起こるエネルギー解放過程であるため、それら多くの分野の研究が大きく前進する。特に「非熱平衡状態にマクスウェル分布と酷似した速度分布が形成される」という成果は、既存の知見へ影響が極めて大きいものである。

Report

(7 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (46 results)

All 2022 2021 2020 2019 2018 2017 2016 Other

All Journal Article (9 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Open Access: 5 results) Presentation (35 results) (of which Int'l Joint Research: 17 results,  Invited: 6 results) Remarks (2 results)

  • [Journal Article] Pseudo-Maxwellian Velocity Distribution Formed by the Pickup-like Process in Magnetic Reconnection2022

    • Author(s)
      Usami Shunsuke、Horiuchi Ritoku
    • Journal Title

      Frontiers in Astronomy and Space Sciences

      Volume: 9

    • DOI

      10.3389/fspas.2022.846395

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Plasma Simulator “Raijin” and Progress in Plasma and Fusion Studies2021

    • Author(s)
      石黒静児、沼波政倫、宇佐見俊介
    • Journal Title

      The Journal of The Institute of Electrical Engineers of Japan

      Volume: 141 Issue: 10 Pages: 642-645

    • DOI

      10.1541/ieejjournal.141.642

    • NAID

      130008095149

    • ISSN
      1340-5551, 1881-4190
    • Year and Date
      2021-10-01
    • Related Report
      2021 Annual Research Report
  • [Journal Article] Horn-Shaped Structure Attached to the Ring-Shaped Ion Velocity Distribution during Magnetic Reconnection with a Guide Field2019

    • Author(s)
      S. Usami, R. Horiuchi, H. Ohtani
    • Journal Title

      Plasma and Fusion Research

      Volume: 14 Issue: 0 Pages: 3401137-3401137

    • DOI

      10.1585/pfr.14.3401137

    • NAID

      130007704085

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dependence of the pickup-like ion effective heating on the poloidal and toroidal magnetic fields during magnetic reconnection2019

    • Author(s)
      Usami Shunsuke、Horiuchi Ritoku、Ohtani Hiroaki、Ono Yasushi、Inomoto Michiaki、Tanabe Hiroshi
    • Journal Title

      Physics of Plasmas

      Volume: 26 Issue: 10 Pages: 102103-102103

    • DOI

      10.1063/1.5099423

    • NAID

      120007149367

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] PIC Simulation Study of Merging Processes of Two Spheromak-Like Plasmoids2018

    • Author(s)
      Ritoku HORIUCHI, Toseo MORITAKA and Shunsuke USAMI
    • Journal Title

      Plasma and Fusion Research

      Volume: 13 Issue: 0 Pages: 3403035-3403035

    • DOI

      10.1585/pfr.13.3403035

    • NAID

      130007396424

    • ISSN
      1880-6821
    • Year and Date
      2018-04-24
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effective Proton Heating through Collisionless Driven Reconnection in the Presence of Guide Field2018

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, Hiroaki Ohtani, Yasushi Ono, Hiroshi, Tanabe
    • Journal Title

      Plasma and Fusion Research

      Volume: 13 Issue: 0 Pages: 3401025-3401025

    • DOI

      10.1585/pfr.13.3401025

    • NAID

      130006744398

    • ISSN
      1880-6821
    • Year and Date
      2018-04-10
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Improvement of the Multi-Hierarchy Simulation Model Based on the Real-Space Decomposition Method2018

    • Author(s)
      Usami Shunsuke、Horiuchi Ritoku、Ohtani Hiroaki、Den Mitsue
    • Journal Title

      Plasma

      Volume: 1 Issue: 1 Pages: 90-104

    • DOI

      10.3390/plasma1010009

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Energy transfer and electron energization in collisionless magnetic reconnection for different guide-field intensities2018

    • Author(s)
      Pucci F.、Usami S.、Ji H.、Guo X.、Horiuchi R.、Okamura S.、Fox W.、Jara-Almonte J.、Yamada M.、Yoo J.
    • Journal Title

      Physics of Plasmas

      Volume: 25 Issue: 12 Pages: 122111-122111

    • DOI

      10.1063/1.5050992

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effective heating of nonadiabatic protons in magnetic reconnection with a guide field2017

    • Author(s)
      Usami Shunsuke、Horiuchi Ritoku、Ohtani Hiroaki
    • Journal Title

      Physics of Plasmas

      Volume: 24 Issue: 9 Pages: 092101-092101

    • DOI

      10.1063/1.4997453

    • NAID

      120007149368

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Particle Simulation on Merging Processes of Two Spherical Tokamak-Type Plasmoids in a Conducting Vessel2021

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, Toseo Moritaka, Yasushi Ono, Michiaki Inomoto, Hiroshi Tanabe
    • Organizer
      The 28th IAEA Fusion Energy Conference (FEC2020)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Studies on ion heating through the merging of spherical tokamaks by means of particle simulations2021

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, Toseo Moritaka, Yasushi Ono
    • Organizer
      The 40th JSST Annual International Conference on Simulation Technology (JSST2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 磁気リコネクションにおける疑似マクスウェル速度分布の形成2021

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      プラズマシミュレータシンポジウム2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] 磁気リコネクションにおけるイオンの特異な速度分布と加熱機構の関係2021

    • Author(s)
      宇佐見俊介、銭谷誠司、堀内利得、大谷寛明
    • Organizer
      第38回プラズマ・核融合学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Non-Maxwellian Velocity Distribution Formed by Pick-Up-Like Behaviors of Protons during Magnetic Reconnection2020

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, Hiroaki Ohtani
    • Organizer
      The 4th Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 粒子シミュレーションによる磁気リコネクション加熱機構研究の進展2020

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      ひので・実験室研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] 磁気リコネクションにおける特異な速度分布に関するシミュレーション研究の進展2020

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      第37回プラズマ・核融合学会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] 駆動型磁気リコネクションにおけるピックアップライクなイオン運動と加熱2020

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Formation of anomalous velocity distribution based on the pickup-like ion motions during magnetic reconnection2019

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, Hiroaki Ohtani
    • Organizer
      Hinode-13/IPELS 2019 (the 13-th symposium of the Hinode mission and the 15-th symposium of IPELS)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 駆動型磁気リコネクション下流で形成されるイオンの異常速度分布関数2019

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      プラズマシミュレータシンポジウム2019
    • Related Report
      2019 Research-status Report
  • [Presentation] Anomalous Velocity Distributions Formed by Pick-Up-Like Protons in Magnetic Reconnection2019

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, Hiroaki Ohtani
    • Organizer
      61st Annual Meeting of Division of Plasma Physics, American Physical Society
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Strange Shapes of Ion Velocity Distribution during Magnetic Reconnection in the Presence of a Guide Field2019

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, Hiroaki Ohtani
    • Organizer
      The 28th International Toki Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 磁気リコネクション下流における水素イオンの異常速度分布形成2019

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      第36回プラズマ・核融合学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] 磁気リコネクションにおけるイオン実効的加熱の磁場成分依存性2019

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Formation of ring-like ion velocity distribution through magnetic reconnection with a guide field2018

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, Hiroaki Ohtani
    • Organizer
      19th International Congress on Plasma Physics (ICPP2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Particle Simulation Studies on Ion Effective Heating through Merging Plasma2018

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, Hiroaki Ohtani, Yasushi Ono, M. Inomoto, H. Tanabe
    • Organizer
      The 27th IAEA Fusion Energy Conference (FEC2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Particle Simulation Studies on Effective Ion Heating during Magnetic Reconnection2018

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, Hiroaki Ohtani, and Yasushi Ono
    • Organizer
      2nd Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Extension of the ion effective heating process during magnetic reconnection with guide field2018

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, Hiroaki Ohtani
    • Organizer
      The 27th International Toki Conference & The 13th Asia Pacific Plasma Theory Conference (ITC27 & APPTC2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] PIC simulation and extended theory on ion pickup-like heating in guide filed reconnection2018

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, Hiroaki Ohtani, Yasushi Ono
    • Organizer
      The 2018 US-Japan Workshop on Magnetic Reconnection (MR2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 磁気リコネクションにおけるイオン加熱のポロイダル・トロイダル磁場依存性2018

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      プラズマシミュレータシンポジウム2018
    • Related Report
      2018 Research-status Report
  • [Presentation] 磁気リコネクションにおけるピックアップライクなイオン加熱のシミュレーションと拡張理論2018

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      宇治リコネクションワークショップ2018(兼 太陽圏物理研究会 第4回研究集会)
    • Related Report
      2018 Research-status Report
  • [Presentation] ガイド磁場磁気リコネクションにおけるリング状速度分布の形成 -水素イオンのピックアップライクな運動-2018

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      平成29年度ISEE太陽圏宇宙線共同研究集会
    • Related Report
      2017 Research-status Report
  • [Presentation] 磁気リコネクションにおける水素イオンのリング状速度分布の形成2018

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Studies on proton effective heating in magnetic reconnection by means of particle simulations2017

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, and Hiroaki Ohtani
    • Organizer
      The US-Japan Workshop and School on Magnetic Reconnection (MR2017)
    • Place of Presentation
      Himegin Hall, Matsuyama, Japan
    • Year and Date
      2017-03-19
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Effective proton heating through magnetic reconnection in the presence of guide field2017

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, and Hiroaki Ohtani
    • Organizer
      7th East-Asia School and Workshop on Laboratory, Space and Astrophysical Plasmas (EASW-7)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Studies on Magnetic Reconnection by Means of Multi-Hierarchy Simulations based on Real-Space Decomposition2017

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, Hiroaki Ohtani, Mitsue Den, and Tomoya Ogawa
    • Organizer
      US-Japan Joint Institute for Fusion Theory (JIFT) Workshop on Multiscale Methods in Plasma Physics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 駆動型磁気リコネクションにおける水素イオン実効的加熱機構の探求2017

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      プラズマシミュレータシンポジウム2017
    • Related Report
      2017 Research-status Report
  • [Presentation] 磁気リコネクション下流におけるイオンリング状速度分布の形成過程2017

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      宇治リコネクションワークショップ2017(兼 太陽圏物理研究会 第2回研究集会)
    • Related Report
      2017 Research-status Report
  • [Presentation] ガイド磁場磁気リコネクションにおけるイオン実効的加熱2017

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      Plasma Conference 2017
    • Related Report
      2017 Research-status Report
  • [Presentation] Effective proton heating through collisionless driven reconnection in the presence of guide field2017

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, Hiroaki Ohtani, Yasushi Ono, and Hiroshi Tanabe
    • Organizer
      The 26th International Toki Conference & The 11th Asia Plasma and Fusion Association Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] ガイド磁場磁気リコネクションにおけるイオン加熱の粒子シミュレーション2016

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      第33回プラズマ・核融合学会年会
    • Place of Presentation
      東北大学青葉山キャンパス(仙台市)
    • Year and Date
      2016-11-29
    • Related Report
      2016 Research-status Report
  • [Presentation] Reconnection Heating Experiments and Simulations for Torus Plasma Merging Startup2016

    • Author(s)
      Y. Ono, T. Yamada, S. Inoue, M. Inomoto, C. Z. Cheng, M. Gryaznevich, R. Scannell, N. Conway, B. J. Crowley, C. Michael, H. Hara, S. Usami, and R. Horiuchi
    • Organizer
      26th IAEA Fusion Energy Conference
    • Place of Presentation
      Kyoto International Conference Center, Kyoto, Japan
    • Year and Date
      2016-10-17
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 磁気リコネクションにおけるイオン実効的加熱のシミュレーション研究2016

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      金沢大学角間キャンパス(金沢市)
    • Year and Date
      2016-09-13
    • Related Report
      2016 Research-status Report
  • [Presentation] 磁気リコネクション下流におけるイオン加熱機構の粒子シミュレーション2016

    • Author(s)
      宇佐見俊介、堀内利得、大谷寛明
    • Organizer
      プラズマシミュレータシンポジウム2016
    • Place of Presentation
      核融合科学研究所(土岐市)
    • Year and Date
      2016-09-07
    • Related Report
      2016 Research-status Report
  • [Presentation] Macro- and microscopic physics of collisionless driven reconnection2016

    • Author(s)
      Shunsuke Usami, Ritoku Horiuchi, Tomoya Ogawa, Hiroaki Ohtani, and Mitsue Den
    • Organizer
      18th International Congress on Plasma Physics (ICPP2016)
    • Place of Presentation
      aohsiung Exhibition Center, Kaohsiung, Taiwan
    • Year and Date
      2016-06-27
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Remarks] 数値実験炉研究プロジェクト

    • URL

      http://nsrp.nifs.ac.jp/index.html

    • Related Report
      2018 Research-status Report 2017 Research-status Report 2016 Research-status Report
  • [Remarks] 基礎物理シミュレーション研究系

    • URL

      http://fps.nifs.ac.jp/index.html

    • Related Report
      2018 Research-status Report 2017 Research-status Report 2016 Research-status Report

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Published: 2016-04-21   Modified: 2023-01-30  

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