Takao Tomoaki

J-GLOBAL         Last updated: Dec 21, 2019 at 02:40
Takao Tomoaki
Sophia University
Faculty of Science and Technology, Department of Engineering and Applied Sciences
Job title
Research funding number

Research Areas


Published Papers

A. Kikuchi, Y. Iijima, S. Nimori, K. Tsuchiya, T. Takao
Transactions on Applied Superconductivity   29(5) 1-5   2019   [Refereed]
Nb3Al wire requires a simplified fabrication process as well as improved critical current density. We found that the reel-to-reel Rapid Heating/Quenching (RHQ) treatment could be safely operated in open air without an expensive dynamic vacuum syst...
R. Piao, Y. Miyoshi, M. Yoshikawa, K. Saito, M. Hamada, S. Matsumoto, H. Suematsu, H. Mochida, T. Takao, Y. Suetomi, M. Takahashi, H. Maeda, Y. Yanagisawa
Transactions on Applied Superconductivity   29(5) 1-7   2019   [Refereed]
The design and development for a compact 1 GHz (23.5 T)-class NMR magnet are presented. The magnet uses inner coils wound with Ni alloy-reinforced Bi-2223 conductors in combination with LTS outer coils. The series-connected coils are operated in a...
H. Toriyama, Y. Fuchida, A. Nomoto, H. Taguchi, T. Takao, K. Nakamura, O. Tsukamoto, M. Furuse
Transactions on Applied Superconductivity   29(5) 1-6   2019   [Refereed]
The most probable cause of quench damage of HTS magnets is over-heating at the highest temperature spot (hot-spot) in the magnet wire during the quench protection sequence. Therefore, to avoid damage, it is necessary to reduce heat generation in t...
T. Yagai, T. Okubo, M. Hira, M. Kamibayashi, M. Jimbo, Y. Kuwabara, T. Takao, Y. Makida, T. Shintomi, N. Hirano, T. Komagome, K. Tsukada, T. Onji, Y. Arai, A. Ishihara, M. Tomita, D. Miyagi, M. Tsuda, T. Hamajima
Transactions on Applied Superconductivity   29(5) 1-5   2019   [Refereed]
The MgB2 coil production technology obtaining 30 kJ stored energy the investigation about the SMES coil consists of 600 A, 1.7-T Rutherford-type conductors made of commercially-available MgB2 wires. Due to strain sensitivity before/after heat trea...
H. Mochida, Y. Suetomi, T. Takao, H. Maeda, Y. Yanagisawa
Transactions on Applied Superconductivity   29(5) 1-6   2019   [Refereed]
High-field high temperature superconducting (HTS) coils, in particular REBCO coils, tend to show electromagnetic force-induced degradation and premature thermal runaways. Operation of high-field HTS coils is practicable with resistive voltage if c...

Conference Activities & Talks

Stability with respect to local critical current degradation in HTS pancake coil wound with insulated conductor composed of non-insulated multiple tape wires
Daisuke Miyagi, Tsubasa Nishioka, Makoto Tsuda, Tomoaki Takao, Osami Tsukamoto
2018 Applied Superconductivity Conference   1 Nov 2018   ASC Committee
Fabrication of Nb3Al Superconducting Wires through the Rapid Heating/Quenching in an Open Air
Akihiro Kikuchi, Yasuo Iijima, Dai Furukawa, Kiyosumi Tsuchiya, Tomoaki Takao
2018 Applied Superconductivity Conference   1 Nov 2018   ASC Committee
Splice Resistance Characteristics of REBCO Coated Conductor at 77 K and 4.2 K
Xudong Wang, Kiyosumi Tsuchiya, Akio Terashima, Akihiro Kikuchi, Mio Uchida, Tomoaki Takao
2018 Applied Superconductivity Conference   1 Nov 2018   ASC Committee
Current transport characteristics of intermediate-grown superconducting (iGS) joint between REBCO coated-conductors in external magnetic fields at 77 K, 50 K and 4.2 K
Kazama Yamagishi, Yu Suetomi, Takeshi Ueno, Renzhong Piao, Kotaro Ohki, Takashi Yamaguchi, Tatsuoki Nagaishi, Hitoshi Kitaguchi, Tomoaki Takao, Hideaki Maeda, Yoshinori Yanagisawa
2018 Applied Superconductivity Conference   1 Nov 2018   ASC Committee
Towards a 1.3 GHz (30.5 T) NMR operated in a persistent current mode: Development of a persistent current 400 MHz (9.39 T) LTS/REBCO NMR magnet
Yoshinori Yanagisawa, Yu Suetomi, Kazama Yamagishi, Renzhong Piao, Masato Takahashi, Kotaro Ohki, Takashi Yamaguchi, Tatsuoki Nagaishi, Tomoaki Takao, Hitoshi Kitaguchi, Kazuyoshi Saito, Mamoru Hamada, Hideaki Maeda
2018 Applied Superconductivity Conference   1 Nov 2018   ASC Committee

Association Memberships