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High Performance Shielding Current Density Analysis for Optimal Design of High-Temperature Superconducting Devices

Research Project

Project/Area Number 20K14709
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 21010:Power engineering-related
Research InstitutionYamagata University

Principal Investigator

Takayama Teruou  山形大学, 大学院理工学研究科, 助教 (70396589)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords有限要素法 / 数値シミュレーション / 高温超伝導薄膜 / 線形加速システム / 多目的最適化 / 遮蔽電流密度解析 / 形状最適化 / 超伝導リニア加速 / 高温超伝導 / 最適化問題 / 高温超伝導体 / 最適化 / 電磁界解析
Outline of Research at the Start

超伝導応用機器を設計・開発するには,超伝導体中を流れる遮蔽電流密度の解析が必要不可欠である.特に,大型な超伝導機器を設計する際に,数値シミュレーションは必須であるといえる.一方,数値シミュレーションは高次元化・大規模化する傾向にあり,高性能解析技術の開発が強く望まれている.本研究の目的は,高温超伝導薄膜内に流れる遮蔽電流密度の時間発展問題を高性能かつ大規模最適化技術を開発し,超伝導応用機器の最適設計を目指すことである.

Outline of Final Research Achievements

To enhance the acceleration performance of a superconducting linear accelerator (SLA) system used for fuel pellet injection in fusion reactors, a numerical investigation was carried out. For this purpose, a numerical code based on the finite element method (FEM) was developed to analyze the simultaneous behavior of shielding current density and dynamic motion of the high-temperature superconducting thin film. To optimize the current profile in the electromagnets, a method combining the normalized Gaussian network approach with a genetic algorithm was implemented in the code. The computational results demonstrated that the optimized current distribution resulted in a narrower profile compared to the uniform distribution. As a result, it was possible to increase the size of the thin film, leading to a significant reduction in the acceleration time required to reach the desired speed, approximately 2.9 times faster.

Academic Significance and Societal Importance of the Research Achievements

新たに開発された数値コードとトポロジー最適化手法の組み合わせは,高温超伝導機器の設計最適化における応用性と有用性を示すことから,超伝導研究の進歩と新たな知見がもたらされる.最適化によって高温超伝導機器の性能向上やエネルギー効率の改善が実現し,超伝導技術の実用化が進むと考えられる.具体的には,高温超伝導リニア加速システムの設計により,磁場閉じ込め核融合炉の燃料ペレットを効率的に加速・制御することが可能になる.同様の手法は他の超伝導機器にも応用でき,エネルギー利用可能な超伝導機器の性能向上や効率化に貢献する.また,効率的かつ経済的な超伝導機器の開発が可能になり,幅広い社会的課題の解決にも寄与する.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (19 results)

All 2023 2022 2021 2020

All Journal Article (9 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 9 results,  Open Access: 5 results) Presentation (10 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Numerical Approach to Enhanced-Performance of Superconducting Linear Accelerator Using Multiple-Electromagnets2023

    • Author(s)
      Takayama Teruou、Saitoh Ayumu、Kamitani Atsushi
    • Journal Title

      Journal of Advanced Simulation in Science and Engineering

      Volume: 10 Issue: 1 Pages: 21-30

    • DOI

      10.15748/jasse.10.21

    • ISSN
      2188-5303
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Linear-System Solver for EFG-Type Saddle-Point Problem without Using <i>QR </i>Decomposition2022

    • Author(s)
      KAMITANI Atsushi、TAKAYAMA Teruou、SAITOH Ayumu、NAKAMURA Hiroaki
    • Journal Title

      Plasma and Fusion Research

      Volume: 17 Issue: 0 Pages: 2403014-2403014

    • DOI

      10.1585/pfr.17.2403014

    • ISSN
      1880-6821
    • Year and Date
      2022-03-18
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Numerical Optimization of Electromagnet Current Distribution in Superconducting Linear Acceleration System2022

    • Author(s)
      Takayama T.、Yamaguchi T.、Saitoh A.、Kamitani A.
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 32 Issue: 6 Pages: 1-5

    • DOI

      10.1109/tasc.2022.3158374

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Multi-Objective Optimization of Superconducting Linear Acceleration System for Pellet Injection by Using Finite Element Method2021

    • Author(s)
      TAKAYAMA Teruou、YAMAGUCHI Takazumi、SAITOH Ayumu、KAMITANI Atsushi、NAKAMURA Hiroaki
    • Journal Title

      Plasma and Fusion Research

      Volume: 16 Issue: 0 Pages: 2401025-2401025

    • DOI

      10.1585/pfr.16.2401025

    • NAID

      130008000730

    • ISSN
      1880-6821
    • Year and Date
      2021-02-19
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 高温超伝導体の数値電磁界解析 -高性能解析技術の開発と応用-2021

    • Author(s)
      高山 彰優
    • Journal Title

      J. Plasma Fusion Res.

      Volume: 97 Pages: 500-507

    • NAID

      40022709000

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Improvement of Superconducting Linear Acceleration System for Pellet Injection: Optimization of Current Profile2021

    • Author(s)
      Takayama Teruou、Yamaguchi Takazumi、Saitoh Ayumu、Kamitani Atsushi
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 31 Issue: 5 Pages: 1-5

    • DOI

      10.1109/tasc.2021.3064795

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Acceleration Techniques for Linear-System Solver in Shielding Current Analysis of Cracked HTS Film2021

    • Author(s)
      KAMITANI Atsushi、TAKAYAMA Teruou、SAITOH Ayumu、NAKAMURA Hiroaki
    • Journal Title

      Plasma and Fusion Research

      Volume: 16 Issue: 0 Pages: 2405005-2405005

    • DOI

      10.1585/pfr.16.2405005

    • NAID

      130008000725

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Numerical Investigations on Enhanced-Performance Superconducting Linear Acceleration System for Pellet Injection2020

    • Author(s)
      Takayama Teruou、Yamaguchi Takazumi、Saitoh Ayumu、Kamitani Atsushi
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 30 Issue: 4 Pages: 1-5

    • DOI

      10.1109/tasc.2020.2979401

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] FEM-simulation of superconducting linear acceleration system for pellet injection2020

    • Author(s)
      Takayama Teruou、Yamaguchi Takazumi、Saitoh Ayumu、Kamitani Atsushi
    • Journal Title

      International Journal of Applied Electromagnetics and Mechanics

      Volume: 64 Issue: 1-4 Pages: 1469-1475

    • DOI

      10.3233/jae-209467

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 超伝導リニア加速システムのFEMシミュレーション: 電磁石電流がペレット速度に及ぼす影響2022

    • Author(s)
      高山 彰優,齋藤 歩,神谷 淳
    • Organizer
      日本応用数理学会2022年度年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Numerical Approach to Enhanced-Performance of Superconducting Linear Accelerator Using Multiple-Electromagnets2022

    • Author(s)
      T. Takayama, A. Saitoh, A. Kamitani
    • Organizer
      JSST2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 複数の電磁石を用いた超伝導リニア加速システムの 数値シミュレーション2022

    • Author(s)
      高山 彰優,齋藤 歩,神谷 淳
    • Organizer
      MAGDA2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Numerical Investigations on Superconducting Linear Acceleration System by Using Finite Element Method: Influence of Magnet Current on Pellet Velocity2022

    • Author(s)
      T. Takayama, A. Saitoh, A. Kamitani, H. Nakamura
    • Organizer
      ITC31
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Numerical Investigation on Superconducting Linear Acceleration System: Shape Optimization of Current Distribution in Electromagnet2021

    • Author(s)
      Teruou Takayama
    • Organizer
      JSST2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 超伝導リニア加速システムの数値シミュレーション:電磁石の形状最適化2021

    • Author(s)
      高山 彰優
    • Organizer
      日本応用数理学会2021年度年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 超伝導リニア加速システムの FEMシミュレーション:多目的最適化による電磁石形状の決定2021

    • Author(s)
      高山 彰優
    • Organizer
      MAGDA2021
    • Related Report
      2021 Research-status Report
  • [Presentation] Improvement of Superconducting Linear Acceleration System for Pellet Injection: Optimization of Current Profile2020

    • Author(s)
      Takayama Teruou、Yamaguchi Takazumi、Saitoh Ayumu、Kamitani Atsushi
    • Organizer
      ASC2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Multi-Objective Optimization of Superconducting Linear Acceleration System for Pellet Injection by Using Finite Element Method2020

    • Author(s)
      Takayama Teruou、Yamaguchi Takazumi、Saitoh Ayumu、Kamitani Atsushi
    • Organizer
      ITC29
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 高温超伝導リニア駆動型ペレット入射法の数値シミュレーション:多目的最適化の適用2020

    • Author(s)
      河崎 洋志,高山 彰優,齋藤 歩,神谷 淳
    • Organizer
      MAGDA2020
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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