• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Studies on temporal variation analysis of modulation effect and self-excitation in a traveling wave direct energy converter

Research Project

Project/Area Number 20H02131
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 21010:Power engineering-related
Research InstitutionKobe University

Principal Investigator

Takeno Hiromasa  神戸大学, 工学研究科, 教授 (90216929)

Co-Investigator(Kenkyū-buntansha) 古川 武留  神戸大学, 工学研究科, 助教 (70845122)
中本 聡  神戸大学, 工学研究科, 助手 (10198260)
市村 和也  神戸大学, 工学研究科, 教室系技術職員 (20756001)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2023: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2022: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2021: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2020: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Keywords核融合 / 新エネルギー / 直接発電 / 進行波型直接エネルギー変換器 / 進行波型直接エネルギー変換 / キーワード
Outline of Research at the Start

この研究では,ヘリウム3燃料核融合発電での利用が期待される直接発電システムのうち,進行波型のエネルギー変換器を扱う.
申請者のグループは,主として模擬実験で変換器の課題解決を進めてきた.最近の研究で変調によるビームの径方向散乱が実験的に観測され,その時間変化が未解明の変調効果の時間変化と同程度の時定数と確認された.この時間変化現象の解明は,変調過程の改善と,ひいては装置の自励発振の実現に結びつくと予想される.
本申請課題では,変調に関わる時間変化の物理機構の解明のため,既設の模擬実験設備のイオン源を大口径化して,解析実験と自励発振の実験,および対応する数値計算を行う.

Outline of Final Research Achievements

In a traveling wave direct energy converter, which will be used in D-3He fusion power generation, the incident ion flux is scattered radially by modulation. The present study is aiming at the clarification of the physical mechanism. We performed simulation experiments by using electrodes for field formation with a single hole excluding mesh in order to prevent from disturbing the phenomenon by secondary electrons. The radial distribution of the incident ion flux after modulation shows an increase due to the field application at a position where no reaction was found on dc field application. This increase does not correspond to the deflection in numerical orbit calculations of a single particle, and is expected to be a result of scattering due to bunching by the modulation.

Academic Significance and Societal Importance of the Research Achievements

この研究は,究極の脱炭素・脱放射能エネルギー源たるヘリウム3燃料核融合発電における,進行波型直接エネルギー変換器の開発に関わる一課題である.イオン束の径方向散乱は,変換元エネルギーの損失であり,変換器の効率に直結する.研究自体はまだ現象解明の段階ながら,この問題を扱うことは高効率器の開発へ向けての一歩と評価できる.また,計画途中から組み込まれた変換器構造からの格子電極の廃止は重要で,これが実験研究において導入されたことも変換器開発へ向けての前進と評価できる.

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (8 results)

All 2023 2022 2021 2020

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (7 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Examination of Efficiency Dependence on Deceleration Voltage in a Traveling Wave Direct Energy Converter Simulator2023

    • Author(s)
      TAKENO Hiromasa、SHIBATA Kazuhiro、NAKAMOTO Satoshi、FURUKAWA Takeru、NAKASHIMA Yousuke
    • Journal Title

      Plasma and Fusion Research

      Volume: 18 Issue: 0 Pages: 2405053-2405053

    • DOI

      10.1585/pfr.18.2405053

    • ISSN
      1880-6821
    • Year and Date
      2023-06-22
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Presentation] ヘリウム3燃料核融合直接発電模擬実験における高速イオンの径方向散乱についての研究2023

    • Author(s)
      中西快, 中本聡, 古川武留, 竹野裕正, 宮澤順一, 後藤拓也
    • Organizer
      第40回プラズマ・核融合学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ヘリウム3燃料核融合直接発電における熱化イオンの分離軌道解析のための模擬実験2023

    • Author(s)
      清水悠真, 中西快, 竹野裕正, 中本聡, 古川武留, 宮澤順一, 後藤拓也
    • Organizer
      第40回プラズマ・核融合学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Efficiency dependence on deceleration voltage in a simulation experiment of traveling wave direct energy converter2022

    • Author(s)
      H. Takeno, K. Shibata, S. Nakamoto, T. Furukawa, Y. Nakashima
    • Organizer
      The 31st International Toki Conference on Plasma and Fusion Research
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ヘリウム3燃料核融合直接発電におけるイオン-イオン分離の模擬実験II2022

    • Author(s)
      中西快,中本聡,古川武留,竹野裕正,宮澤順一,後藤拓也
    • Organizer
      第39回プラズマ・核融合学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Initial results of ion-ion separation experiment for advanced fusion in a unified direct energy conversion simulator2021

    • Author(s)
      H. Takeno, S. Mizuno, K. Hashiguchi, S. Nakamoto, J. Miyazawa, T. Goto
    • Organizer
      The 30th International Toki Conference on Plasma and Fusion Research
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ヘリウム3燃料核融合直接発電におけるイオン-イオン分離の模擬実験2021

    • Author(s)
      水野翔太, 中本聡, 竹野裕正, 宮澤順一, 後藤拓也
    • Organizer
      第38回プラズマ・核融合学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 統合型模擬実験装置における直接エネルギー変換の研究2020

    • Author(s)
      竹野裕正,橋口和也,水野翔太,市村和也,中本聡,宮澤順一,後藤拓也
    • Organizer
      プラズマ・核融合学会第37回年会
    • Related Report
      2020 Annual Research Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi