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Increase of the shielding performance of magnetic cloak for spacecraft

Research Project

Project/Area Number 19K15204
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 24010:Aerospace engineering-related
Research InstitutionTohoku University

Principal Investigator

Nagasaki Yoh  東北大学, 工学研究科, 准教授 (60823747)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords磁気クローク / 超電導磁気シールド / 高温超電導 / 放射線シールド / 宇宙応用
Outline of Research at the Start

宇宙空間には宇宙放射線が飛び交っており、宇宙飛行士の被曝、搭載機器の劣化を防ぐために、放射線シールドの研究開発は宇宙探査における最重要課題の一つである。近年、超伝導コイルを用いた宇宙機用放射線シールドの研究が盛んに行われているが、超伝導コイルの磁場が宇宙飛行士や搭載機器に悪影響を及ぼすことが懸念されている。本研究では、上記磁場の遮蔽を目的として、超伝導体と強磁性体シリンダーから構成される磁気クロークの多層化に取り組み、その磁気遮蔽能力の向上を目指す。

Outline of Final Research Achievements

This study proposed a non-insulation magnetic shield or cloak to make a screening current distribution as like the superconducting bulk and realized the increase of the shielding performance of superconducting shields using CC tapes. The screening current can be produced though the current paths between each layer of the tapes by removing the electrical insulation between the tapes. We experimentally compared the shielding performance of insulation shields and non-insulation shields and verified that the shielding factor of the non-insulation shields were much higher than that of the insulation shields. We also made a multi-layer non-insulation shield and realized more than 99.9% shielding factor at the center of the shield.

Academic Significance and Societal Importance of the Research Achievements

高い遮蔽率を達成した本研究の磁気遮蔽システムを大型し、放射線・磁気クロークシステムが実現すれば、同システムは今後の人類の宇宙空間における活動のインフラとなることが期待される。更に、宇宙機のみならず、磁気遮蔽を必要とするMRIや量子コンピュータ、磁気環境の影響が大きい生物実験等、様々な磁気関連分野に応用可能であり、非常に社会的意義が高い。また、超電導線材を用いた磁気シールドの遮蔽特性および多層構造化の可能性を明らかにしたことは、電磁気学を含む学術分野においても非常に有意義と考える。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (8 results)

All 2022 2021 2020 Other

All Int'l Joint Research (3 results) Presentation (5 results) (of which Int'l Joint Research: 3 results)

  • [Int'l Joint Research] Slovak Academy of Sciences(スロバキア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Slovak Academy of Sciences(スロバキア)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Slovak Academy of Sciences(スロバキア)

    • Related Report
      2019 Research-status Report
  • [Presentation] Reinforcement Method of High Temperature Superconducting Coil for Magneto Plasma Sail2022

    • Author(s)
      Y. Nagasaki, M. Maruyama, M. Tsuda, I. Funaki
    • Organizer
      International Symposium on Space Technology and Science
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Reinforcement Structure of HTS Magnet to Increase the Magnetic Moment for Space Application2021

    • Author(s)
      Y. Nagasaki, M. Maruyama, M. Tsuda, I. Funaki
    • Organizer
      Magnet Technology 27
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 強磁場遮蔽が可能な電磁誘導型超電導磁気シールドの遮蔽特性2021

    • Author(s)
      花木悠哉,江宇揚,長崎陽,津田理
    • Organizer
      2021年度電気関係学会東北支部連合大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 強磁場遮蔽が可能な電磁誘導型超電導磁気シールドの遮蔽能力2020

    • Author(s)
      江 宇揚,津田 理,長崎 陽
    • Organizer
      2020年度電気関係学会東北支部連合大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Magnetic shielding performance of superconducting shields using coated conductor tapes with soldering joints2020

    • Author(s)
      Yoh Nagasaki , Yuyang Jiang , Makoto Tsuda , Mykola Solovyov , Fedor Gomory
    • Organizer
      10th Asian Cryogenics and Applied Superconductivity Conference (ACASC), 2nd International Cryogenic Materials Conference in Asia (Asian-ICMC), and the CSSJ meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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