東川 甲平 (ヒガシカワ コウヘイ)

Development of Superconducting Cable With Energy Storage Function and Evaluation of its Functionality in DC Microgrid With Renewable Energy Sources
Kohei Higashikawa,Akihito Ide,Wenhao Bian,Takanobu Kiss
IEEE Transactions on Applied Superconductivity 2023年08月 [査読有り]

Continuous Measurement on Electric-Field Versus Current-Density Characteristics of REBCO Coated Conductors in the Electric-Field Window From 10(-2) Down to 10(-11) V/m
Zeyu Wu,Kohei Higashikawa,Takanobu Kiss
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 33(5) 2023年08月 We have succeeded in measuring electric-field versus current-density (E-J) characteristics of REBCO ... [査読有り]

再生可能エネルギーの大量利用に向けたエネルギー貯蔵機能付き超伝導ケーブルとそれを用いた電力システムの提案
東川 甲平,木須 隆暢
低温工学 57(6) 343-348 2022年11月 The purpose of this research is to develop fundamental technologies for innovative superconducting p... [査読有り]

Automatic Detection of Local Obstacles in a Long Length RE-123 Coated Conductor by Deep Learning Based Image Classification in Reel-to-Reel Magnetic Microscopy
N. Somjaijaroen,T. Kiss,K. Imamura,K. Higashikawa
IEEE Transactions on Applied Superconductivity 32(6) 2022年09月 We have succeeded in detecting local obstacles automatically in a 200-m-long RE-123 coated conductor... [査読有り]

Measurement of In-Field E-J Characteristics in Multi-Filamentary Bi-2223 Tapes at Ultra-Low Electric-Field Down to Around 10^-13V/m
Zeyu Wu,Takanobu Kiss,Shan Tian,Sohki Kishikawa,Kohei Higashikawa,Yoshinori Yanagisawa,Jun Ichi Shimoyama
IEEE Transactions on Applied Superconductivity 32(6) 2022年09月 We have developed a method to investigate in-field electric-field v.s. current-density (E-J) charact... [査読有り]

Experimental and theoretical study on power generation characteristics of 1 kW class fully high-temperature superconducting induction/synchronous generator using a stator winding with a bending diameter of 20 mm
Taketsune Nakamura,Tenghui Dong,Jun Matsuura,Takanobu Kiss,Kohei Higashikawa,Shigeru Sato,Peihong Zhang
IEEE Transactions on Applied Superconductivity 2022年 We report experimental and theoretical results of power generation characteristics of a 1 kW class f... [査読有り]

Characterization of Spatial Distribution of Local Critical Current Density in a Co-Doped BaFe2As2Film Based on Magnetic Microscopy
Zeyu Wu,Kohei Higashikawa,Kazutaka Imamura,Zhongtang Xu,Yanwei Ma,Takanobu Kiss
IEEE Transactions on Applied Superconductivity 31(5) 2021年08月 We have investigated spatial distribution of local critical current density (Jc) in a Co-doped BaFe2... [査読有り]

Diagnostic Method for Monitoring Core Position and Strand Failure in DC Superconducting Cable
Kohei Higashikawa,Tatsuhiro Kaneshige,Kohei Tokuyama,Kazutaka Imamura,Kenji Suzuki,Masaru Tomita,Takanobu Kiss
IEEE Transactions on Applied Superconductivity 31(5) 2021年08月 We have developed a diagnostic method for monitoring core position and strand failure in DC supercon... [査読有り]

MgB₂ 超電導線材の高 J_c 化 -MgB₂ コアの充填率向上と不純物添加-
熊倉浩明,松本明善,西島元,東川甲平,木須隆暢
低温工学 56(6) 317-326 2021年 Two important factors that strongly affect J_c of the MgB₂ wires are impurity a... [査読有り]

Scanning Hall-probe microscopy for site-specific observation of microstructure in superconducting wires and tapes for the clarification of their performance bottlenecks
Kohei Higashikawa,Masayoshi Inoue,Shujun Ye,Akiyoshi Matsumoto,Hiroaki Kumakura,Ryuji Yoshida,Takeharu Kato,Takato Machi,Akira Ibi,Teruo Izumi,Takanobu Kiss
Superconductor Science and Technology 33(6) 2020年06月 © 2020 IOP Publishing Ltd. This paper reports a diagnostic method for clarifying performance bottlen... [査読有り]

Measurement and analysis on local magnetization properties of RE-123 coated conductor with DC transport current and external magnetic field
Kohei Higashikawa,Naohiro Numata,Kohei Hisajima,Takumi Suzuki,Takanobu Kiss
IEEE Transactions on Applied Superconductivity 30(4) 2020年06月 © 2002-2011 IEEE. It has been recognized as a significant issue that the magnetization of RE-123 coa... [査読有り]

Development of multi-filamentated long EuBCO coated conductors with BHO doping by plane-plume PLD method
A. Ibi,T. MacHi,K. Nakaoka,M. Sato,T. Izumi,K. Higashikawa,T. Kiss
Journal of Physics: Conference Series 1293(1) 2019年10月 © 2019 Published under licence by IOP Publishing Ltd. Long REBa2Cu3Ox (REBCO, RE: rare earth element... [査読有り]

Dynamic performance analysis of long-distance power transmission system with DC superconducting cable from large photovoltaic generation
Kohei Higashikawa,Junichi Arai,Katsuhiko Harada,Tadashi Koshizuka,Jun Matsushima,Hisatoshi Ikeda,Noureddine Harid,Ahmed Al-Durra
IEEE Transactions on Applied Superconductivity 29(5) 2019年08月 © 2002-2011 IEEE. This paper proposes a new long-distance power transmission system with superconduc... [査読有り]

Novel Power System With Superconducting Cable With Energy Storage Function for Large-Scale Introduction of Renewable Energies
Kohei Higashikawa,Takanobu Kiss
IEEE Transactions on Applied Superconductivity 29 2019年08月 © 2002-2011 IEEE. This paper proposes a superconducting cable with energy storage function crucial f... [査読有り]

Feasibility study of superconducting cable application to oil/gas power supply network
Junichi Arai,Kohei Higashikawa,Tadashi Koshizuka,Hisatoshi Ikeda,Noureddine Harid,Ahmed Al-Durra
IEEE Transactions on Industry Applications 55 145-151 2019年01月 © 1972-2012 IEEE. In this paper, the static and dynamic behaviors of a power system feeding an oil/g... [査読有り]

Hardware-in-the-Loop Simulation on Fault Current Limiting Operation of RE-123 Coated Conductors under the Influence of Spatial Inhomogeneity
Kohei Higashikawa,Masahiro Tajima,Shogo Urasaki,Masayoshi Inoue,Yusuke Fukumoto,Masaru Tomita,Takanobu Kiss
IEEE Transactions on Applied Superconductivity 28(4) 2018年06月 We have investigated transient behavior of RE-123 coated conductors in fault current limiting operat... [査読有り]

Enhancement of In-Field Critical Current Density of BaZrO3-Added (Y, Gd) BCO-Coated Conductors by Using a Multi-Coating TFA-MOD Method
Takumi Suzuki,Syunsuke Oomura,Kazutaka Imamura,Masayoshi Inoue,Kohei Higashikawa,Satoshi Awaji,Koichi Nakaoka,Teruo Izumi,Takanobu Kiss
IEEE Transactions on Applied Superconductivity 28(3) 2018年04月 We have investigated the in-field critical current properties in BaZrO3-added (Y, Gd) Ba2Cu 3O7-δ (Y... [査読有り]

Current Capacity of Cu-Sheathed Multifilamentary Coated Conductors under the Influence of Spatial Variation of Local Critical Currents in Each Filament
Kohei Higashikawa,Takumi Suzuki,Masayoshi Inoue,Shinji Fujita,Yasuhiro Iijima,Takanobu Kiss
IEEE Transactions on Applied Superconductivity 28(3) 2018年04月 We investigated the relationship between current capacity and local critical current distribution of... [査読有り]

Characterization of Critical Current Distribution in Roebel Cable Strands Based on Reel-to-Reel Scanning Hall-Probe Microscopy
Kohei Higashikawa,Xiang Guo,Masayoshi Inoue,Zhenan Jiang,Rodney Badcock,Nicholas Long,Takanobu Kiss
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 27(4) 2017年06月 We have characterized the local critical current distribution in 2-mm-wide Roebel cable strands usin... [査読有り]

Characterization of Local Critical Current Distribution in Multifilamentary Coated Conductor Based on Reel-to-Reel Scanning Hall-Probe Microscopy
Kohei Higashikawa,Dai Uetsuhara,Masayoshi Inoue,Shinji Fujita,Yasuhiro Iijima,Takanobu Kiss
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 27(4) 2017年06月 We have carried out the characterization of local critical current distribution in a 113-m-long mult... [査読有り]

BMO-Doped REBCO-Coated Conductors for Uniform In-Field I-c by Hot-Wall PLD Process Using IBAD Template
Y. Iijima,K. Kakimoto,M. Igarashi,S. Fujita,W. Hirata,S. Muto,T. Yoshida,Y. Adachi,M. Daibo,K. Naoe,T. Fukuzaki,K. Higashikawa,T. Kiss,S. Awaji
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 27(4) 2017年06月 BaMO3 (BMO, M: Zr or Hf)-doped REBCO-coated conductors were prepared by Hot-Wall PLD method on IBAD ... [査読有り]

Comparison between Bi-2223 tape and RE-123 coated conductor from the view point of current transport properties influencing thermal stability
Takanobu Kiss,Masayoshi Inoue,Kohei Higashikawa,Takumi Suzuki,Lin Lyu,Ken Takasaki,Kazutaka Imamura,Yuta Onodera,Dai Uetsuhara,Akira Ibi,Teruo Izumi,Hitoshi Kitaguchi
CRYOGENICS 80 221-228 2016年12月 We have investigated flux flow dissipation in typical two kinds of HTS tapes, i.e., a Bi-2223 multi-... [査読有り]

Multi-filamentary REBCO tapes fabricated by scratching a buffer layer along the tape longitudinal direction
Chihaya Kurihara,Shinji Fujita,Naonori Nakamura,Mitsunori Igarashi,Yasuhiro Iijima,Kohei Higashikawa,Dai Uetsuhara,Takanobu Kiss,Masataka Iwakuma
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 530 68-71 2016年11月 A method for making multi-filamentary REBCO tapes by only scratching buffer layer was developed for ... [査読有り]

Hardware-in-the-Loop Simulation of Superconducting Devices for DC Electric Railway Systems Based on a Real-Time Digital Simulator
Kohei Higashikawa,Shogo Urasaki,Masayoshi Inoue,Masaru Tomita,Takanobu Kiss
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 26(4) 2016年06月 We have developed a hardware-in-the-loop (HIL) simulation setup to analyze superconducting devices f... [査読有り]

Three-Dimensional Analysis of MgB2 Wire by use of X-ray Micro-Tomography
Masayoshi Inoue,Hiroshi Tatara,Kazutaka Harada,Kohei Higashikawa,Shujun Ye,Akiyoshi Matsumoto,Hiroaki Kumakura,Takanobu Kiss
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 26(3) 2016年04月 For the further development of MgB2 wires, investigation of 3-D structures for MgB2 filaments and sh... [査読有り]

Magnetic Microscopy for Nondestructive Characterization of Local Critical Current Distribution in MgB2 Wires With Magnetic Sheath Materials
Kohei Higashikawa,Hiroshi Tatara,Masayoshi Inoue,Shujun Ye,Akiyoshi Matsumoto,Hiroaki Kumakura,Takanobu Kiss
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 26(3) 2016年04月 We have developed a method for the nondestructive characterization of critical current distribution ... [査読有り]

Influence of Internal Magnetic Field Distribution on Critical Currents in a Single and Assembled Bi-2223 Tapes
Kazuki Furukawa,Kohei Higashikawa,Kosuke Imado,Masayoshi Inoue,Masashi Kikuchi,Shin-ichi Kobayashi,Takayoshi Nakashima,Kazuhiko Hayashi,Ken-ichi Sato,Masaru Tomita,Takanobu Kiss
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 25(3) 2015年06月 We have investigated the influence of self-field on the critical current density distribution in a B... [査読有り]

Development of REBCO Coated Conductors by TFA-MOD Method With High Properties in Magnetic Fields
K. Kimura,R. Hironaga,T. Nakamura,Y. Takahashi,T. Koizumi,T. Hasegawa,K. Higashikawa,M. Inoue,T. Kiss,M. Yoshizumi,T. Izumi,Y. Shiohara
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 25(3) 2015年06月 With technological advance of the REBaCuO (RE: Rare Earth elements, REBCO) coated conductors (CC), d... [査読有り]

Current Transport Properties of TFA-MOD Processed Long-Length YxGd1-xBa2Cu3Oy Coated Conductor Doped With BaZrO3 Artificial Pinning Centers
Masayoshi Inoue,Kenta Tanaka,Kazutaka Imamura,Kohei Higashikawa,Kazunari Kimura,Yasuo Takahashi,Tsutomu Koizumi,Takayo Hasegawa,Satoshi Awaji,Kazuo Watanabe,Masateru Yoshizumi,Teruo Izumi,Takanobu Kiss
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 25(3) 2015年06月 We have investigated the current transport properties of batch furnace processed TFA-MOD YxGd1-xBa2C... [査読有り]

Enhancement of in-field J(c) in Gd1Ba2Cu3O7-delta coated conductor by using highly oriented IBAD substrate
Masayoshi Inoue,Kenta Tanaka,Kazutaka Imamura,Kohei Higashikawa,Satoshi Awaji,Kazuo Watanabe,Takahiro Taneda,Masateru Yoshizumi,Teruo Izumi,Takanobu Kiss
PROCEEDINGS OF THE 25TH INTERNATIONAL CRYOGENIC ENGINEERING CONFERENCE AND INTERNATIONAL CRYOGENIC MATERIALS CONFERENCE 2014 67 903-907 2015年 We have investigated current transport properties in two G(1)dBa(2)Cu(3)O(7-delta) (GdBCO) coated co... [査読有り]

Critical current density in Gd1Ba2Cu3O7-delta coated conductor under the influence of flux creep
Yuta Onodera,Takanobu Kiss,Suguru Gangi,Kazutaka Imamura,Kohei Higashikawa,Masayoshi Inoue,Masateru Yoshizumi,Teruo Izumi
PROCEEDINGS OF THE 25TH INTERNATIONAL CRYOGENIC ENGINEERING CONFERENCE AND INTERNATIONAL CRYOGENIC MATERIALS CONFERENCE 2014 67 926-930 2015年 We have investigated electric field vs. current density ( E-J) characteristics of Gd1Ba2Cu3O7-delta ... [査読有り]

人工ピンニングセンター導入型 TFA-MOD REBCO 超電導線材の開発
木村 一成,広長 隆介,高橋 保夫,小泉 勉,長谷川 隆代,東川 甲平,井上 昌睦,木須 隆暢,中村 達徳,吉積 正晃,和泉 輝郎,塩原 融
低温工学 50(1) 19-24 2015年 Recently, high-temperature, superconducting coated conductors (CCs) are being used for various appli... [査読有り]

Magnetic microscopy for characterization of local critical current in iron-sheathed MgB2 wires
K. Higashikawa,A. Yamamoto,T. Kiss,S. Ye,A. Matsumoto,H. Kumakura
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 504 62-64 2014年09月 We have developed a characterization method of local critical current in iron-sheathed MgB2 wires. L... [査読有り]

Nondestructive Diagnostics of Narrow Coated Conductors for Electric Power Applications
Kohei Higashikawa,Kenta Katahira,Masayoshi Inoue,Takanobu Kiss,Yuki Shingai,Masaya Konishi,Kazuya Ohmatsu,Takato Machi,Masateru Yoshizumi,Teruo Izumi,Yuh Shiohara
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 24(3) 2014年06月 We have succeeded in characterizing local critical currents and electromagnetically equivalent width... [査読有り]

走査型ホール素子顕微鏡による超伝導線材の局所J_c 分布評価
東川 甲平,井上 昌睦,木須 隆暢
低温工学 49(9) 485-493 2014年 This article reviews a method for characterizing the local critical current density (J_{c<... [査読有り]}

Highly effective and isotropic pinning in epitaxial Fe(Se,Te) thin films grown on CaF2 substrates
V. Braccini,S. Kawale,E. Reich,E. Bellingeri,L. Pellegrino,A. Sala,M. Putti,K. Higashikawa,T. Kiss,B. Holzapfel,C. Ferdeghini
APPLIED PHYSICS LETTERS 103(17) 2013年10月 We report on the isotropic pinning obtained in epitaxial Fe(Se,Te) thin films grown on CaF2(001) sub... [査読有り]

Development of REBCO Coated Conductors by TFA-MOD Method With High Characteristic in Magnetic Field
K. Kimura,R. Hironaga,Y. Takahashi,T. Nakanishi,T. Koizumi,T. Hasegawa,K. Higashikawa,M. Inoue,T. Kiss,T. Kato,T. Nakamura,M. Yoshizumi,T. Izumi,Y. Shiohara
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 23(3) 2013年06月 YxGd(1-x)Ba2Cu3Oy coated conductors (CCs) with artificial pinning centers (APCs) were fabricated by ... [査読有り]

Enhancement of In-Field Current Transport Properties in GdBCO Coated Conductors by BaHfO3 Doping
Masayoshi Inoue,Yoshimasa Yamaguchi,Takashi Sakakibara,Kazutaka Imamura,Kohei Higashikawa,Takanobu Kiss,Satoshi Awaji,Kazuo Watanabe,Hiroshi Tobita,Masateru Yoshizumi,Teruo Izumi
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 23(3) 2013年06月 We have investigated the in-field current transport property in BaHfO3 doped GdBa2Cu3O7-delta coated... [査読有り]

Lateral Distribution of Critical Current Density in Coated Conductors Slit by Different Cutting Methods
Higashikawa Kohei,Katahira Kenta,Okumura Keitaro,Shiohara Kei,Inoue Masayoshi,Kiss Takanobu,Shingai Yuki,Konishi Masaya,Ohmatsu Kazuya,Yoshizumi Masateru,Izumi Teruo
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 23(3) 2013年06月 We have investigated the lateral distributions of critical current densities in narrow coated conduc... [査読有り]

Measurement of in-plane magnetic relaxation in RE-123 coated conductors by use of scanning Hall probe microscopy
K. Shiohara,K. Higashikawa,M. Inoue,T. Kiss,Y. Iijima,T. Saitoh,M. Yoshizumi,T. Izumi
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 484 139-141 2013年01月 We have investigated electric field criterion of in-plane critical current density in a coated condu... [査読有り]

Development of high I-c long REBCO tapes with high production rate by PLD method
A. Ibi,S. Miyata,T. Taneda,M. Yoshizumi,N. Chikumoto,Y. Yamada,T. Izumi,K. Tanabe,Y. Shiohara,A. Yamamoto,K. Okumura,K. Higashikawa,T. Kiss
PROCEEDINGS OF THE 25TH INTERNATIONAL SYMPOSIUM ON SUPERCONDUCTIVITY (ISS2012) 45 145-148 2013年 We have been developing long REBa2Cu3O7-delta coated conductors with high performance by the combina... [査読有り]

Fabrication of BaHfO3 doped Gd1Ba2Cu3O7-delta coated conductors with the high I-c of 85 A/cm-w under 3 T at liquid nitrogen temperature (77 K)
H. Tobita,K. Notoh,K. Higashikawa,M. Inoue,T. Kiss,T. Kato,T. Hirayama,M. Yoshizumi,T. Izumi,Y. Shiohara
SUPERCONDUCTOR SCIENCE & TECHNOLOGY 25(6) 2012年06月 The introduction of effective artificial pinning centers into pulsed laser deposition derived Gd1Ba2... [査読有り]

Noncontact Characterization of In-Plane Distribution of Critical Current Desity in Multifilamentary Coated Conductor
Kohei Higashikawa,Kei Shiohara,Masayoshi Inoue,Takanobu Kiss,Takato Machi,Noriko Chikumoto,Sergey Lee,Keiichi Tanabe,Teruo Izumi,Hiroshi Okamoto
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 22(3) 2012年06月 Using a scanning Hall-probe microscopy, we have developed a noncontact characterization method for m... [査読有り]

High-speed scanning Hall-probe microscopy for two-dimensional characterization of local critical current density in long-length coated conductor
Kohei Higashikawa,Kei Shiohara,Yoshihiro Komaki,Keitaro Okumura,Kazutaka Imamura,Masayoshi Inoue,Takanobu Kiss,Yasuhiro Iijima,Takashi Saitoh,Takato Machi,Masateru Yoshizumi,Teruo Izumi,Hiroshi Okamoto
ADVANCES IN SUPERCONDUCTIVITY XXIV 27 228-231 2012年 We have succeeded in significant improvement in measuring speed of scanning Hall-probe microscopy fo... [査読有り]

Influence of gas flow and improvement of homogeneity on the distribution of critical current density in YBCO coated conductor processed by TFA-MOD method
Kei Shiohara,Kohei Higashikawa,Teppei Kawaguchi,Masayoshi Inoue,Takanobu Kiss,Masateru Yoshizumi,Teruo Izumi
SUPERCONDUCTIVITY CENTENNIAL CONFERENCE 2011 36 1637-1642 2012年 Using a scanning Hall-probe microscopy, we have investigated in-plane distribution of critical curre... [査読有り]

Measurement of local critical currents in TFA-MOD processed coated conductors by use of scanning Hall-probe microscopy
K. Shiohara,K. Higashikawa,T. Kawaguchi,M. Inoue,T. Kiss,M. Yoshizumi,T. Izumi
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 471(21-22) 1041-1044 2011年11月 We have carried out 2-dimensional (2D) measurement of local critical current in a Trifluoroacetates-... [査読有り]

Scanning Hall-probe microscopy system for two-dimensional imaging of critical current density in RE-123 coated conductors
K. Higashikawa,M. Inoue,T. Kawaguchi,K. Shiohara,K. Imamura,T. Kiss,Y. Iijima,K. Kakimoto,T. Saitoh,T. Izumi
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 471(21-22) 1036-1040 2011年11月 We have developed a characterization method for two-dimensional imaging of critical current density ... [査読有り]

Investigation of Three-Dimensional Current Distribution at Silver Diffusion Joint of RE-123 Coated Conductors Based on Magnetic Microscopy Combined With Finite Element Method
Kohei Higashikawa,Yoshihiro Honda,Masayoshi Inoue,Takanobu Kiss,Noriko Chikumoto,Naomichi Sakai,Teruo Izumi,Hiroshi Okamoto
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 21(3) 3403-3407 2011年06月 Combining scanning Hall-probe microscopy (SHPM) with finite element method (FEM), we have investigat... [査読有り]

In-Field Current Transport Properties of 600 A-Class GdBa2Cu3O7-delta Coated Conductor Utilizing IBAD Template
Masayoshi Inoue,Rene Fuger,Kohei Higashikawa,Takanobu Kiss,Satoshi Awaji,Masafumi Namba,Kazuo Watanabe,Yasuhiro Iijima,Takashi Saitoh,Teruo Izumi
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 21(3) 3206-3209 2011年06月 We have investigated critical current I-c properties of 600 A/cm-class GdBa2Cu3O7-delta (GdBCO) coat... [査読有り]

Spatially-resolved measurement on time-dependent electromagnetic behavior in alternating current carrying coated conductor
K. Higashikawa,Y. Honda,M. Inoue,M. Iwakuma,T. Kiss,K. Nakao,Y. Yamada,T. Izumi
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 470(20) 1280-1283 2010年11月 Establishment of processing technology for multifilamentary coated conductors (CCs) is a key issue f... [査読有り]

Current transport property in GdBCO coated conductor with artificial pinning centers in a wide range of temperature, magnetic field up to 27 T, and field angle
M. Inoue,R. Fuger,K. Higashikawa,T. Kiss,M. Namba,S. Awaji,K. Watanabe,A. Ibi,S. Miyata,Y. Yamada,T. Izumi
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 470(20) 1292-1294 2010年11月 We have investigated current transport property in Gd(1)Ba(2)Cu(3)O(7-delta) coated conductor with a... [査読有り]

Study on critical current distribution in CT-OP Bi-2223 tape based on the scanning Hall probe magnetic microscopy
Y. Honda,K. Higashikawa,M. Inoue,T. Kiss,N. Ayai,M. Kikuchi,K. Hayashi,K. Sato
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 470(20) 1377-1379 2010年11月 Critical current (I(c)) of a Bi-2223 tape fabricated by controlled-overpressure (CT-OP) sintering me... [査読有り]

Evaluation of current transport properties of GdBa2Cu3O7-delta coated conductors over a wide range of temperature and external magnetic fields
R. Fuger,M. Inoue,K. Higashikawa,T. Kiss,M. Namba,S. Awaji,K. Watanabe,A. Ibi,H. Fukushima,Y. Yamada,T. Izumi
9TH EUROPEAN CONFERENCE ON APPLIED SUPERCONDUCTIVITY (EUCAS 09) 234 2010年 We have carried out detailed measurements on the electric field vs. current density (E-J) characteri... [査読有り]

Improved critical current density in DI-BSCCO
N. Ayai,M. Kikuchi,K. Tatamidani,T. Nakashima,G. Osabe,T. Kagiyama,J. Fujikami,S. Kobayashi,K. Yamazaki,S. Yamade,E. Shizuya,K. Hayashi,K. Sato,T. Kiss,K. Higashikawa,M. Inoue,H. Kitaguchi,H. Kumakura,J. Shimoyama
9TH EUROPEAN CONFERENCE ON APPLIED SUPERCONDUCTIVITY (EUCAS 09) 234 2010年 High I-c in DI-BSCCO has been demonstrated even in high temperature up to 90K and parallel magnetic ... [査読有り]

Cooling performance of hybrid refrigerant of solid nitrogen and small amount of neon for the purpose of HTS power applications
K. Higashikawa,T. Nakamura
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 469(21) 1910-1914 2009年11月 We have investigated cooling performance of a hybrid refrigerant of solid nitrogen and small amount ... [査読有り]

Significant reduction in volume, stored energy and magnetization loss of high-field magnet coil based on the improvement of critical current characteristics in GdBCO coated conductor
K. Higashikawa,T. Kiss,M. Inoue,S. Awaji,K. Watanabe,H. Fukushima,Y. Yamada,Y. Shiohara
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 469(15-20) 1776-1780 2009年08月 We have characterized current transport properties in a GdBa(2)Cu(3)O(7-delta) coated conductor fabr... [査読有り]

Coupled Analysis Method for High-Field Magnet Coil Using Coated Conductor Based on J-E Characteristics as a Function of Temperature, Magnetic Field Vector and Mechanical Strain
Kohei Higashikawa,Takanobu Kiss,Masayoshi Inoue,Kazutaka Imamura,Taketsune Nakamura,Satoshi Awaji,Kazuo Watanabe,Hiroyuki Fukushima,Yutaka Yamada,Yuh Shiohara
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 19(3) 1621-1625 2009年06月 We have characterized nonlinear current transport properties in a coated conductor as a function of ... [査読有り]

System Coordination of 2 GJ Class YBCO SMES for Power System Control
Koji Shikimachi,Naoki Hirano,Shigeo Nagaya,Hiroshi Kawashima,Kohei Higashikawa,Taketsune Nakamura
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 19(3) 2012-2018 2009年06月 YBCO superconducting wire has a relatively low decrease in power distribution at high temperatures a... [査読有り]

Performance improvement of YBCO coil for high-field HTS-SMES based on homogenized distribution of magnetically-mechanically influenced critical current
Kohei Higashikawa,Taketsune Nakamura,Michinaka Sugano,Koji Shikimachi,Naoki Hirano,Shigeo Nagaya
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 18(2) 758-761 2008年06月 Generally speaking for a HTS coil, perpendicular magnetic field to conductor's broad surface should ... [査読有り]

Conceptual design of HTS coil for SMES using YBCO coated conductor
Kohei Higashikawa,Taketsune Nakamura,Koji Shikimachi,Naoki Hirano,Shigeo Nagaya,Takanobu Kiss,Masayoshi Inoue
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 17(2) 1990-1993 2007年06月 High T-c superconducting (HTS) toroidal coil using YBCO coated conductor is designed for 70 MJ class... [査読有り]

Analysis of discharging characteristics in a Bi-2223/Ag coil for SMES with consideration of cooling capacity of a cryocooler
Kohei Higashikawa,Taketsune Nakamura,Hiroshi Okamoto
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 16(2) 578-581 2006年06月 We investigated discharging characteristics of a Bi-2223/Ag coil by means of thermo-electromagnetic ... [査読有り]

Optimal design of a Bi-2223/Ag coil for superconducting magnetic energy storage at different operating temperatures
K Higashikawa,T Nakamura,H Okamoto
SUPERCONDUCTOR SCIENCE & TECHNOLOGY 18(11) 1445-1453 2005年11月 We carried out optimal design of a Bi-2223/Ag toroidal coil for a superconducting magnetic energy st... [査読有り]

Switching characteristics of MgB2 wires subjected to transient application of magnetic field
K Higashikawa,T Nakamura,K Osamura,M Takahashi,M Okada
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 426 1261-1266 2005年10月 We investigated current transport properties in MgB2 wires subjected to transient application of mag... [査読有り]

Annealing effects in pit-processed MgB2/SUS316 (stainless steel) composite wires
S Balamurugan,K Higashikawa,T Nakamura,K Osamura
MODERN PHYSICS LETTERS B 19(16) 793-800 2005年07月 The MgB2/SUS316 (stainless steel) wires were fabricated by powder-in-tube (PIT) method using commerc... [査読有り]

Design of Bi-2223/Ag coil based on genetic algorithm and finite element method
K Higashikawa,T Nakamura,T Hoshino,Muta, I
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 15(2) 1895-1898 2005年06月 We designed Bi-2223/Ag coils based on genetic algorithm and finite element method. The winding geome... [査読有り]

Analysis of shielding layers in HTS cable taking account of spiral structure
T Nakamura,H Kanzaki,K Higashikawa,T Hoshino,Muta, I
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 15(2) 1747-1750 2005年06月 Analysis code for shielding layers of HTS cable, which was taken account of spiral structure of Bi-2... [査読有り]

Analysis of shielding property in Bi-2223/Ag multifilamentary tapes with multi-layer arrangement
T Nakamura,H Kanzaki,T Tsuboi,K Higashikawa,T Hoshino,Muta, I
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY 161(1-2) 22-27 2005年04月 Shielding property of Bi-2223/Ag multifilamentary tapes is analyzed based on the finite-element meth... [査読有り]

Anisotropic distributions of current density and electric field in Bi-2223/Ag coil with consideration of multifilamentary structure
K Higashikawa,T Nakamura,T Hoshino
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 419(3-4) 129-140 2005年03月 Bi-2223/Ag double pancake coil with a stack number of 6 is analysed with the use of quantitative J-E... [査読有り]

Investigation of dissipative behaviour in bi-2223/Ag coil with consideration of multifilamentary structure
Kohei Higashikawa,Taketsune Nakamura,Itsuya Muta,Tsutomu Hoshino
IoP Conference Series, Vol. 181, Applied Superconductivity 2003: Proceedings of 6th EUCAS 611-616 2004年12月 [査読有り]

Performance of conduction-cooled HTS tape with the aid of solid nitrogen-liquid neon mixture
T Nakamura,K Higashikawa,Muta, I,T Hoshino
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 412 1221-1224 2004年10月 We study the new-type of cryogen, which consists of solid nitrogen and liquid neon, for the performa... [査読有り]

Improvement of dissipative property in HTS coil impregnated with solid nitrogen
T Nakamura,K Higashikawa,Muta, I,A Fujio,K Okude,T Hoshino
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 386 415-418 2003年04月 Dissipative property of high-T-c superconducting (HTS) coil impregnated with solid nitrogen was inve... [査読有り]