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J-GLOBAL ID：201301010164130335   Update date: Oct. 31, 2024

Tsuyoshi Yagai

ヤガイ ツヨシ | Tsuyoshi Yagai
Affiliation and department：
Sophia University Faculty of Science and Technology, Department of Engineering and Applied Sciences

About Sophia University Faculty of Science and Technology, Department of Engineering and Applied Sciences


Job title： Professor
Research field  (1)： Electrical power engineering
Research keywords  (2)： 液体水素冷却超電導電力機器 ,  Large Scale Superconducting Applications
Research theme for competitive and other funds  (10)：
  • 2021 - 2024 Ultra fine A15 superconducting wire for high-field accelerator magnets
  • 2021 - 2022 Development of large-capacity SMES realizing a highly stabilized power conditioning system with low-carbon emission by utilizing liquid hydrogen providing network.
  • 2016 - 2020 Basic research on evaluation method of mechanical strain effect and coiling technology of high-temperature superconducting wires
  • 2015 - 2018 Investigation of twist-pitch dependence on AC losses in CIC conductor based on strand location measurement
  • 2012 - 2013 Strand deformation and buckling analysis in CIC conductor based on strand trace measurement and structural mechanics exposed to large electromagnetic force
Show all
Papers (121)：
  • S. Hoshino, N. Ishida, T. Yagai, T. Hamajima, N. Banno, H. Utoh, Y. Sakamoto. Novel Strand Position Detection System Using Thermistor Array for Next Generation Large Fusion Magnet Cable-in-Conduit Conductors. IEEE Transactions on Applied Superconductivity. 2024. 34. 5. 1-4
  • Koki Asai, Tsuyoshi Yagai, Nobuya Banno. Effect of Hf Addition to Nb on Nb$_{\text{3 } }$Sn Grain Morphology Under High Sn Diffusion Driving Force. IEEE Transactions on Applied Superconductivity. 2024. 34. 5. 1-5
  • T. Yagai, R. Inomata, Y. Makida, T. Shintomi, N. Hirano, T. Hamajima. Design and Demonstration of Al-Stabilized MgB2 Conductor for Higher-Sensitivity Particle Detection Magnet. IEEE Transactions on Applied Superconductivity. 2024. 34. 5. 1-6
  • Nobuya Banno, Toshihisa Asano, Tsuyoshi Yagai, Shinya Kawashima, Masahiro Sugimoto, Satoshi Awaji, Hiroyasu Utoh, Yoshiteru Sakamoto. Characterization of Japan's DEMO Candidate Reinforced Nb3Sn Wires Under Crossover Contact Stress. IEEE Transactions on Applied Superconductivity. 2024. 34. 5. 8400505-8400505
  • M. Sugano, A. Kikuchi, H. Kitaguchi, G. Nishijima, T. Yagai. Mechanical Properties of Ultra-Thin Nb3Sn Composite Wires. IEEE Transactions on Applied Superconductivity. 2023. 33. 5. 1-5
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MISC (69)：
  • キンゾク ・ セラミックス/チョウデンドウキキ ゴウドウ ケンキュウカイ ・ ワカテ ケンキュウカイ 「 キンゾク ・ セラミックスセミナー 」. 2022. 2022. 13-28. 71-74
  • 槇田 康博, 新冨 孝和, 谷貝 剛, 髙橋 雅史, 猪俣 涼, 駒込 敏弘, 平野 直樹, 濱島 高太郎. サーモサイフォン循環液体水素冷却によるSMESモデル装置-SMES Model Device Cooled by Liquid Hydrogen Flow through Thermosiphon Loop-特集 超電導応用における循環冷却システム. 低温工学 = Journal of Cryogenics and Superconductivity Society of Japan. 2022. 57. 4. 241-245
  • イノマタ リョウ, タカハシ マサフミ, オンチ タイキ, ヤガイ ツヨシ, シントミ タカカズ, マキタ ヤスヒロ, コマゴメ トシヒロ. キンゾク ・ セラミックス/チョウデンドウキキ ゴウドウ ケンキュウカイ ・ ワカテ ケンキュウカイ 「 キンゾク ・ セラミックスセミナー 」. 2021. 2021. 9-25. 69-72
  • 武田泰明, 武田泰明, 末富佑, 末富佑, 中井優亨, 松竹優一, 谷貝剛, PIAO Renzhong, 柳澤吉紀, 元木貴則, et al. Development of a persistent current 400 MHz (9.39T) LTS/Bi2223 NMR-test results of a Bi2223 inner coil at 4 K-. 低温工学・超電導学会講演概要集. 2021. 101st
  • 谷貝 剛, 平 萌人, 桑原 優介, 高尾 智明, 槙田 康博, 新冨 孝和, 駒込 敏弘, 塚田 謙一, 星野 昌幸, 平野 直樹, et al. MgB2大容量導体における素線変形に起因する特性劣化と拡張有限要素解析-Investigation on critical current degradation caused by strand deformation in a MgB2 large-scale conductor with extended finite element method-金属・セラミックス 超電導機器合同研究会・超電導応用および材料関連技術. 電気学会研究会資料. MC / 超電導機器金属・セラミックス合同研究会 [編]. 2019. 2019. 13-19. 9-14
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Lectures and oral presentations  (27)：
  • 液体水素冷熱の有効利用と EVの急速充電を実現する 超電導DCDCコンバータの開発
    (2024年度春季低温工学・超電導学会 2024)
  • 高粒子透過性検出器を実現する薄肉ソレノイドコイル用アルミ安定化MgB2導体開発
    (2024年度秋季低温工学・超電導学会 2023)
  • 大型SMES磁石応用への大電流容量MgB2導体開発
    (2024年度春季低温工学・超電導学会 2023)
  • Development of MgB2 Conductors and Coils for Superconducting Magnetic Energy Storage cooled by liquid hydrogen
    (10th ACASC 2nd Asian ICMC Conference 2020)
  • Experimental and Numerical Study on Crack Evolu-tion of Nb Barriers Causing Ic Deterioration in Multi-filament MgB2 Strands during Cabling Process for Large-scale Energy Storage Coils.
    (26th International Coference on Magnet Technology 2019)
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Professional career (3)：
  • 学士 (東北大学)
  • 修士 (東北大学)
  • 博士(工学) (東北大学)
Association Membership(s) (2)：
Cryogenics and Superconductivity Society of Japan ,  The Institute of Electrical Engineers of Japan
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