The Japan Society of Plasma Science and Nuclear Fusion Research
Cryogenics and Superconductivity Society of Japan
The Physical Society of Japan
The Institute of Electrical Engineers of Japan
The Institute of Electrical and Electronics Engineers, Inc.
Academic Degree
工学修士(東京大学)
工学博士(東京大学)
Academic Resume (Graduate Schools)
The University of Tokyo, Graduate School of Engineering, Department of Electrical Engineering, 修了
The University of Tokyo, Graduate School of Engineering, Department of Electronic Engineering, 修了
Academic Resume (Undergraduate School/Majors)
The University of Tokyo, Faculty of Engineering, Department of Electrical Engineering, 卒業
Research History
From Apr. 2008, To Present
Kyoto University, Department of Electrical Engineering, Graduate School of Enigineering, Professor
From Apr. 2005, To Mar. 2008
Yokohama National University, Faculty of Engineering, Professor
From Apr. 2001, To Mar. 2005
Yokohama National University, Faculty of Engineering, Associate Professor
From Apr. 1997, To Mar. 2001
Yokohama National University, Faculty of Engineering, Associate Professor
From Oct. 1993, To Mar. 1997
Yokohama National University, Graduate School of Engineering, Associate Professor
From Apr. 1992, To Sep. 1993
Yokohama National University, Faculty of Engineering, Lecturer
From Apr. 1990, To Mar. 1992
Yokohama National University, Faculty of Engineering, Research Associate
From Apr. 2017, To Mar. 2020
National Institutes for Quantum and Radiological Science and Technology, Visiting Scientist
From Apr. 2015, To Present
High Energy Accelerator Research Organization, Visiting Professor
From Jun. 2009, To Mar. 2017
National Institute of Radiological Sciences, Visiting Scientist
Profile
Profile
Professor Naoyuki Amemiya received his Dr. Eng. Degree from the University of Tokyo in 1990. He joined Yokohama National University in the same year (Lecturer in 1992; Associate Professor in 1993; Professor in 2005) and transferred to Kyoto University in 2008. He stayed at the National High Magnetic Field Laboratory in 1996 as a Visiting Scientist and at University of Twente from 2000 to 2001 as an Exchange Scientist between JSPS and NWO.
His research interests in the area of fundamental technologies for superconductor applications include ac losses in superconductors, which is generated in superconductors exposed to temporally-changing magnetic fields, and the stability of superconducting state of superconductors. He is also studying high Tc superconductor magnets for particle accelerators for cancer therapy as well as accelerator-driven nuclear transmutation (treatment of nuclear waste), and large-current high Tc superconductors, which is one of the key components of large-scale applications of superconductors. He has been involved in various R&D projects funded by the Japan Science and Technology Agency, the New Energy and Industrial Technology Development Organization, etc.
He has been serving for various international conferences. He is currently the Japan Technical Committee Chair of IEEE Council of Superconductivity and an Associate Editor of IEEE Transactions on Applied Superconductivity. He was the elected Board Member of ASC, Inc. from 2006 to 2016 and was the Program Chair of ASC 2016. He was the Asian Editor and Executive Board Member of Superconductor Science and Technology from 2009 to 2014. He is the Senior member of IEEE and the members of the Institute of Electrical Engineers of Japan, the Physical Society of Japan, Cryogenics and Superconductivity Society of Japan, the Japan Society of Plasma Science and Nuclear Fusion Research.
He sets a high value on collaborations with industries, other universities, and research institutes.
Ac losses in superconductors, stability of superconductors, high Tc superconductor magnets, medical applications of superconductors, power applications of superconductors, various applications of electromagnetism, nuclear fusion
Overview of the research
From the viewpoints of applications, the major advantages of superconductors are current transport with extremely small energy dissipation and generation of high magnetic fields. Prof. Amemiya’s research interests in the area of fundamental technologies for superconductor applications include ac losses in superconductors, which is the loss generated when superconductors are exposed to temporally-changing magnetic fields, and the stability of superconducting state of superconductors carrying transport currents. He also studies on high Tc superconductor magnets for particle accelerators for cancer therapy and large-current high Tc superconductors, which is one of the key components of large-scale applications of superconductors.
Research Interests
applied electromagnetism
superconductor
nuclear fusion
applied superconductivity
Research Areas
Energy, Nuclear fusion
Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Electric/electronic material engineering
Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Electrical power engineering
Life sciences, Medical systems
Papers
Thermal Runaway of Conduction-Cooled Monofilament and Multifilament Coated Conductors
IEEE Transactions on Applied Superconductivity, Jun. 2022
Simplified Numerical Electromagnetic Field Analysis Method of Coils Wound With Spiral Coated-Conductor Cables
Yusuke Sogabe; Rikito Takahashi; Naoyuki Amemiya
IEEE Transactions on Applied Superconductivity, Jun. 2022
Magnetic Field Drifts of Small HTS Dipole Magnet Under Repeated Excitation
Yusuke Sogabe; Koki Wakabayashi; Naoyuki Amemiya
IEEE Transactions on Applied Superconductivity, Jun. 2022
Impact of Copper Thickness, Conductor Width, and Number of Striations on Coupling Loss Characteristics of Copper-Plated Multifilament-Coated Conductors
Mao Shigemasa; Yusuke Sogabe; Ning Wang; Akira Takahashi; Naoyuki Amemiya
IEEE Transactions on Applied Superconductivity, Mar. 2022
Effective reduction of magnetisation losses in copper-plated multifilament coated conductors using spiral geometry
Naoyuki Amemiya; Mao Shigemasa; Akira Takahashi; Ning Wang; Yusuke Sogabe; Satoshi Yamano; Hisaki Sakamoto
Superconductor Science and Technology, 02 Dec. 2021, Peer-reviewed, Lead author, Corresponding author
Shielding currents in multifilament coated conductors wound into pancake coils and layer-wound coils
Yusuke Sogabe; Yudai Mizobata; Naoyuki Amemiya
Superconductor Science and Technology, 01 Oct. 2021, Peer-reviewed
Identification Method of Current Conditions Suitable for Synchronous Machines Having Multiple Operating Points
Superconductor Science and Technology, 01 Nov. 2019, Peer-reviewed
Conceptual Study on lighter and more compact transmission cable systems for Hybrid Aircrafts
S. Isojima; Y. Yoshida; N. Amemiya; N. Sadakata; H. Ohsaki; M. Okada
Journal of Physics: Conference Series, 15 Oct. 2019, Peer-reviewed
Large-scale electromagnetic field analyses of coils wound with coated conductors using a current-vector-potential formulation with a thin-strip approximation
IEEE Transactions on Applied Superconductivity, Apr. 2018, Peer-reviewed
AC Loss Characteristics in REBCO Coil Assemblies With Different Geometries and Conductors
Yusuke Sogabe; Zhenan Jiang; Stuart C. Wimbush; Nicholas M. Strickland; Mike Staines; Nicholas J. Long; Naoyuki Amemiya
IEEE Transactions on Applied Superconductivity, Apr. 2018, Peer-reviewed
Influence of E–J Characteristics of Coated Conductors and Field Ramp-Up Rates on Shielding-Current-Induced Fields of Magnet
Yang Li; Naoki Tominaga; Yusuke Sogabe; Takashi Kikuchi; Stuart Wimbush; Simon Granville; Naoyuki Amemiya
IEEE Transactions on Applied Superconductivity, Apr. 2018, Peer-reviewed
Numerical Modeling of Dynamic Loss in HTS-Coated Conductors Under Perpendicular Magnetic Fields
Quan Li; Min Yao; Zhenan Jiang; Chris W. Bumby; Naoyuki Amemiya
IEEE Transactions on Applied Superconductivity, Mar. 2018, Peer-reviewed
Coupling time constants of striated and copper-plated coated conductors and the potential of striation to reduce shielding-current-induced fields in pancake coils
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 2014, Peer-reviewed
Development of Curved Combined-Function Superconducting Magnets for a Heavy-Ion Rotating-Gantry
Y. Iwata; S. Suzuki; K. Noda; T. Shirai; T. Murakami; T. Furukawa; T. Fujita; Y. Hara; K. Mizushima; S. Sato; S. Mori; K. Shouda; H. Arai; T. Fujimoto; T. Orikasa; S. Takayama; T. Ogitsu; T. Obana; N. Amemiya
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 2014, Peer-reviewed
The Behavior of Nano- and Micro-Magnetic Particles Under a High Magnetic Field Using a Superconducting Magnet
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, Mar. 2014, Peer-reviewed
Superconducting properties of experimental YBCO coils for FFAG accelerator magnets
S. Takayama; K. Koyanagi; T. Tosaka; K. Tasaki; T. Kurusu; Y. Ishii; N. Amemiya; T. Ogitsu
11TH EUROPEAN CONFERENCE ON APPLIED SUPERCONDUCTIVITY (EUCAS2013), PTS 1-4, 2014, Peer-reviewed
Development of a superconducting rotating-gantry for heavy-ion therapy
Y. Iwata; K. Noda; T. Murakami; T. Shirai; T. Furukawa; T. Fujita; S. Mori; K. Mizushima; K. Shouda; T. Fujimoto; T. Ogitsu; T. Obana; N. Amemiya; T. Orikasa; S. Takami; S. Takayama
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, Dec. 2013, Peer-reviewed
Status of a 275 kV Class REBCO Superconducting Cable Development
S. Mukoyama; M. Yagi; T. Mitsuhashi; T. Nomura; J. Ten; R. Nakayama; T. Ohkuma; O. Maruyama; Y. Aoki; T. Saitoh; N. Amemiya; A. Ishiyama; N. Hayakawa
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 2013, Peer-reviewed
Calculated Characteristics of HTS Induction/Synchronous Machine Below and Above Its Critical Temperature
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 2013, Peer-reviewed
Total AC loss measurements in a six strand Roebel cable carrying an AC current in an AC magnetic field
Zhenan Jiang; Takashi Komeda; Naoyuki Amemiya; N. J. Long; Mike Staines; R. A. Badcock; C. Bumby; R. G. Buckley
Superconductor Science and Technology, Mar. 2013, Peer-reviewed
AC loss reduction of outer-diameter-fixed superconducting power transmission cables using narrow coated conductors
Q. Li; N. Amemiya; R. Nishino; T. Nakamura; T. Okuma
Physica C: Superconductivity and its Applications, 15 Jan. 2013, Peer-reviewed
Magnetic field design of combined-function magnets wound with coated conductors
Q. Li; N. Amemiya; T. Nakamura; T. Ogitsu
PROCEEDINGS OF THE 25TH INTERNATIONAL SYMPOSIUM ON SUPERCONDUCTIVITY (ISS2012), 2013, Peer-reviewed
Design and evaluation of 275 kV-3 kA HTS power cable
M. Yagi; S. Mukoyama; T. Mitsuhashi; T. Jun; J. Liu; R. Nakayama; N. Hayakawa; X. Wang; A. Ishiyama; N. Amemiya; T. Hasegawa; T. Saitoh; T. Ohkuma; O. Maruyama
PROCEEDINGS OF THE 25TH INTERNATIONAL SYMPOSIUM ON SUPERCONDUCTIVITY (ISS2012), 2013, Peer-reviewed
Ac loss analyses of superconducting power transmission cables considering their three-dimensional geometries
Amit Roy; T. S. Datta; Naoyuki Amemiya; R. K. Bhandari; Ho-Myung Chang; Jian Chen; Ali Gencer; Tomoiyoshi Haruyama; P. K. Kaw; Laifeng Li; Liangzhen Lin; Sang-Soo Oh; A. K. Raychoudhuri; Ki-Chul Seong; Liye Xiao; Kaoru Yamafuji; Pingxiang Zhang
Cryogenics, Dec. 2012, Peer-reviewed
Transport AC Loss Measurements in Single- and Two-Layer Parallel Coated Conductor Arrays With Low Turn Numbers
Zhenan Jiang; N. J. Long; Mike Staines; Quan Li; R. A. Slade; Naoyuki Amemiya; A. D. Caplin
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Dec. 2012, Peer-reviewed
Research and development of fundamental technologies for accelerator magnets using high T-c superconductors
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 2012, Peer-reviewed
Design of a superconducting rotating gantry for heavy-ion therapy
Y. Iwata; K. Noda; T. Shirai; T. Murakami; T. Furukawa; S. Mori; T. Fujita; A. Itano; K. Shouda; K. Mizushima; T. Fujimoto; T. Ogitsu; T. Obana; N. Amemiya; T. Orikasa; S. Takami; S. Takayama; I. Watanabe
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS, Apr. 2012, Peer-reviewed
AC loss measurements in pancake coils wound with 2G tapes and Roebel cable: dependence on spacing between turns/strands
Zhenan Jiang; N. J. Long; R. A. Badcock; Mike Staines; R. A. Slade; A. D. Caplin; Naoyuki Amemiya
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, Mar. 2012, Peer-reviewed
Design and evaluation of 66 kV-class "3-in-One" HTS cable using REBCO wires
M. Ohya; H. Hirota; T. Masuda; N. Amemiya; A. Ishiyama; T. Ohkuma
Design and evaluation of 66 kV-class HTS power cable using REBCO wires
M. Ohya; H. Yumura; T. Masuda; N. Amemiya; A. Ishiyama; T. Ohkuma
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, Nov. 2011, Peer-reviewed
Progress of 275 kV-3 kA YBCO HTS cable
M. Yagi; S. Mukoyama; N. Amemiya; A. Ishiyama; X. Wang; Y. Aoki; T. Saito; T. Ohkuma; O. Maruyama
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, Nov. 2011, Peer-reviewed
Lateral critical current density distributions degraded near edges of coated conductors through cutting processes and their influence on ac loss characteristics of power transmission cables
N. Amemiya; Q. Li; R. Nishino; K. Takeuchi; T. Nakamura; K. Ohmatsu; M. Ohya; O. Maruyama; T. Okuma; T. Izumi
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, Nov. 2011, Peer-reviewed
Model for electromagnetic field analysis of superconducting power transmission cable comprising spiraled coated conductors
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 2010, Peer-reviewed
Visualization of magnetic microparticles in liquid and control of their motion using dynamic magnetic field
S. Tokura; M. Hara; N. Kawaguchi; J. Izawa; N. Amemiya
JOURNAL OF APPLIED PHYSICS, May 2010, Peer-reviewed
Transport AC loss characteristics of a nine strand YBCO Roebel cable
Zhenan Jiang; R. A. Badcock; N. J. Long; Mike Staines; K. P. Thakur; L. S. Lakshmi; A. Wright; K. Hamilton; G. N. Sidorov; R. G. Buckley; Naoyuki Amemiya; A. D. Caplin
Electromagnetic field analyses of two-layer power transmission cables consisting of coated conductors with magnetic and non-magnetic substrates and AC losses in their superconductor layers
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 2007, Peer-reviewed
Magnetic flux penetration into twisted multifilamentary coated superconductors subjected to ac transverse magnetic fields
Naoyuki Amemiya; Susumu Sato; Takeshi Ito
JOURNAL OF APPLIED PHYSICS, Dec. 2006, Peer-reviewed
Lateral J(c) distribution of YBCO coated conductors fabricated by IBAD/MOCVD process
N. Amemiya; O. Maruyama; M. Mori; N. Kashima; T. Watanabe; S. Nagaya; Y. Shiohara
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, Oct. 2006, Peer-reviewed
Comparison between measured and numerically calculated magnetization losses in multifilamentary YBCO coated conductors
N. Amemiya; Z. Jiang; K. Yoda; F. Kimura; G. A. Levin; P. N. Barnes
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, Oct. 2006, Peer-reviewed
Comparison of the total AC loss characteristics in YBCO conductors and BSCCO multifilamentary tapes with identical engineering critical current densities
Zhenan Jiang; Naoyuki Amemiya
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, Aug. 2006, Peer-reviewed
Multifilament YBa2Cu3O6+x-coated conductors with minimized coupling losses
G. A. Levin; P. N. Barnes; J. W. Kell; N. Amemiya; Z. Jiang; K. Yoda; F. Kimura
APPLIED PHYSICS LETTERS, Jul. 2006, Peer-reviewed
Reduction of error in magnetic knife method to measure J(c) distribution of YBCO coated conductor
Electromagnetic field analysis of rectangular high T-c superconductor with large aspect ratio
N Enomoto; N Amemiya
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, Oct. 2004, Peer-reviewed
Influence of silver layer thickness on magnetization loss of YBCO coated conductors in transverse magnetic field with various orientations
T Nishioka; N Amemiya; Z Jiang; Y Iijima; T Saitoh; M Yamada; Y Shiohara
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, Oct. 2004, Peer-reviewed
Total AC loss of YBCO coated conductor carrying AC transport current in AC transverse magnetic field with various orientations
N Amemiya; ZN Jiang; Y Iijima; K Kakimoto; T Saitoh
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, Aug. 2004, Peer-reviewed
Application of parallelized SOR method to electromagnetic field analysis of superconductors
F Ito; N Amemiya
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 2004, Peer-reviewed
Magnetization property of Bi-2212 round wires
S Kasai; N Amemiya; K Yamagishi; K Yoda; T Ogitsu; T Nakamoto; N Banno; T Takeuchi; S Nimori
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 2004, Peer-reviewed
FEM analysis of AC loss in twisted Bi-2223 multifilamentary tapes carrying AC transport current in AC transverse magnetic field with arbitrary orientation
N Amemiya; N Enomoto; S Shirai
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 2004, Peer-reviewed
Influence of film width and magnetic field orientation on AC loss in YBCO thin film
N Amemiya; T Nishioka; ZA Jiang; K Yasuda
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, Mar. 2004, Peer-reviewed
An experimental method for total AC loss measurement of high T-c superconductors
Z Jiang; N Amemiya
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, Mar. 2004, Peer-reviewed
Magnetization loss of YBCO coated conductors and BSCCO multifilamentary tapes
IEEE Transactions on Applied Superconductivity, Jun. 2003, Peer-reviewed
Current redistribution and stability of superconducting triplex cable without electrical insulation carrying non-uniform current
N Amemiya; H Yonekawa; E Kobayashi; T Ogitsu; K Sasaki; N Ohuchi; K Tsuchiya; T Shintomi
CRYOGENICS, Mar. 2003, Peer-reviewed
Total AC losses in twisted and untwisted multifilamentary Bi-2223 superconducting tapes carrying AC transport current in AC longitudinal magnetic field
N Amemiya; F Jin; Z Jiang; S Shirai; B ten Haken; JJ Rabbers; N Ayai; K Hayashi
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, Mar. 2003, Peer-reviewed
Longitudinal magnetization loss in twisted multifilamentary Bi2223 tape
N Amemiya; JJ Rabbers; BE Krooshoop; B ten Haken; H ten Kate; N Ayai; K Hayashi
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, Aug. 2002, Peer-reviewed
Magnetization loss measurements of Bi-2212 round wires fabricated by stranded-and-formed method
N Amemiya; ZA Jiang; K Yamagishi; T Sasaoka
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Mar. 2002, Peer-reviewed
Quench propagation and stability of Nb3Al superconductors made by rapid heating, quenching, and transformation process
N Amemiya; N Hoshi; N Banno; T Takeuchi; H Wada
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Mar. 2002, Peer-reviewed
Ac transport current loss characteristics of twisted multifilament Bi/Ag sheathed tape subject to AC longitudinal magnetic field
J Ogawa; O Tsukamoto; M Ciszek; N Amemiya; S Fukui
ADVANCES IN CRYOGENIC ENGINEERING, VOLS 48A AND B, 2002, Peer-reviewed
Influence of current redistribution on quench propagation velocity in Rutherford cable
K Sasaki; T Ogitsu; T Nakamoto; K Tsuchiya; T Shintomi; H Yonekawa; N Amemiya
CRYOGENICS, Aug. 2001, Peer-reviewed
AC losses in superconducting Ag/Bi-2223 composite tapes with interfilamentary barrier
M Ciszek; O Tsukamoto; J Ogawa; N Amemiya; K Hayashi; M Ueyama; N Ayai
PHYSICA C, Aug. 2001, Peer-reviewed
Experimental determination of two-dimensional critical current density distribution in YBCO coated conductors
N Amemiya; Y Shinkai; Y Iijima; K Kakimoto; K Takeda
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, Aug. 2001, Peer-reviewed
Mode of magnetic flux penetration into high T-c superconductors with various cross-sectional shape and their AC loss characteristics
N Amemiya; Y Ohta
PHYSICA C, Aug. 2001, Peer-reviewed
Stabilization for thermomagnetic instability of CuNi/NbTi superconducting wire in spatially distributed magnetic field
N Banno; N Amemiya
ELECTRICAL ENGINEERING IN JAPAN, Jun. 2001, Peer-reviewed
Power dissipation in composite Ag/Bi-2223 tapes with twisted and untwisted filaments
M Ciszek; O Tsukamoto; J Ogawa; N Amemiya; K Hayashi; M Ueyama; N Ayai
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Mar. 2001, Peer-reviewed
Normal zone propagation process accompanied by current redistribution in superconducting tripler cables
N Amemiya; H Yonekawa; T Ogitsu; K Sasaki; N Ohuchi; K Tsuchiya; T Shintomi
CRYOGENICS, Aug. 2000, Peer-reviewed
Magnetic instability of ac multifilamentary superconductors in spatially distributed magnetic field
N Banno; N Amemiya; O Tsukamoto; T Kumano
ELECTRICAL ENGINEERING IN JAPAN, Apr. 2000, Peer-reviewed
Influence of longitudinal magnetic field on current distribution and AC loss in twisted multifilamentary high T-c superconducting tapes
N Amemiya
CRYOGENICS, Apr. 2000, Peer-reviewed
CuNi/NbTi超電導線の分布磁界下における磁気的不安定性の安定化
伴野, 信哉; 雨宮, 尚之
電気学会論文誌B, Mar. 2000, Peer-reviewed
Angular dependence of AC transport current losses in biaxially aligned Ag/YBCO-123/YSZ/hastelloy coated conductor
M Ciszek; O Tsukamoto; N Amemiya; J Ogawa; O Kasuu; H Ii; K Takeda; M Shibuya
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Mar. 2000, Peer-reviewed
Filament decoupling and magnetization loss of multifilamentary Bi2223 superconducting tapes
N Amemiya; O Tsukamoto; M Torii; M Ciszek; H Kawasaki; E Mizushima; S Ishii; N Ayai; K Hayashi; M Ueyama
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Mar. 2000, Peer-reviewed
AC loss in high-Tc superconductors
O Tsukamoto; M Ciszek; N Amemiya
ADVANCES IN SUPERCONDUCTIVITY XII, 2000, Peer-reviewed
球状トカマク核融合炉における中心導体超伝導化の検討
影井, 康弘; 雨宮, 尚之
電気学会論文誌A, Nov. 1999, Peer-reviewed
Penetration loss in BSCCO tape without transport current
N Banno; N Amemiya; A Mihoichi; M Ciszek; H Mukai; K Ohmatsu
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1999, Peer-reviewed
Numerical analysis of AC loss in high Tc twisted tape carrying AC transport current in external AC magnetic field - Effect of twisting on loss reduction
N Banno; N Amemiya
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1999, Peer-reviewed
Dependence of AC transport current losses of HTS wires on their structures and synthesizing processes
O Tsukamoto; D Miyagi; S Ishii; N Amemiya; S Fukui; O Kasuu; H Ii; K Takeda; M Shibuya; M Mimura; K Hayashi; H Yoshino
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1999, Peer-reviewed
Angular dependence of AC transport losses in mnltifilamentary Bi-2223/Ag tape on external DC magnetic fields
M Ciszek; O Tsukamoto; N Amemiya; M Ueyama; K Hayashi
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1999, Peer-reviewed
Measurement and FEM analysis of magnetization loss in HTS tapes
K Miyamoto; N Amemiya; N Banno; M Torii; E Hatasa; E Mizushima; T Nakagawa; H Mukai; K Ohmatsu
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1999, Peer-reviewed
Recent technical trends of superconducting magnets in Japan - Part II: Stability and quench characteristics
T Takao; S Torii; N Amemiya; S Fukui; T Hoshino; A Ishiyama; A Ninomiya; H Yamaguchi; T Satow; O Tsukamoto
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1999, Peer-reviewed
Recent technical trends of superconducting magnets in Japan, part I: Magnet data base and recent progress in magnet winding current density
O Tsukamoto; S Torii; T Takao; N Amemiya; S Fukui; T Hoshino; A Ishiyama; A Ninomiya; H Yamaguchi; T Satow
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1999, Peer-reviewed
Non-uniform current distribution in superconducting cables exposed to external magnetic field and its influence on stability
H Yonekawa; N Amemiya; T Ogitsu; T Shintomi; K Tsuchiya; K Sasaki
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1999, Peer-reviewed
Influence of interstrand current redistribution on acceleration of quench propagation in eight-strand Rutherford cables
K Sasaki; T Ogitsu; T Nakamoto; K Tsuchiya; T Shintomi; H Yonekawa; N Amemiya
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1999, Peer-reviewed
Theoretical model of twisted high T-c superconducting tapes for numerical alternating-current loss calculations
N Banno; N Amemiya
JOURNAL OF APPLIED PHYSICS, Apr. 1999, Peer-reviewed
Analytical formulae of coupling loss and hysteresis loss in HTS tape
N Banno; N Amemiya
CRYOGENICS, Feb. 1999, Peer-reviewed
Power losses in Ag/BSCCO-2223 tapes due to ac transport current and ac external magnetic field
M. Ciszek; O. Tsukamoto; N. Amemiya; D. Miyagi; J. Ogawa; M. Ueyama; K. Hayash
Advances in Cryogenic Engineering (Materials), 1999, Peer-reviewed
Effect of critical current density distribution on AC transport current of HTS wire
D. Miyagi; J. Ogawa; O. Tsukamoto; N. Amemiya; O. Kasuu; H. Ii; K. Takeda; M. Shibuya
Advances in Cryogenic Engineering (Materials), 1999, Peer-reviewed
Influence of DC external magnetic field on AC transport current loss of HTS tape
D Miyagi; O Tsukamoto; N Amemiya; H Mukai; J Fujikami; K Hayashi; K Sato
PHYSICA C, Dec. 1998, Peer-reviewed
Finite element analysis of AC loss in non-twisted Bi-2223 tape carrying AC transport current and/or exposed to DC or AC external magnetic field
N Amemiya; K Miyamoto; S Murasawa; H Mukai; K Ohmatsu
PHYSICA C, Dec. 1998, Peer-reviewed
Numerical modelings of superconducting wires for AC loss calculations
N Amemiya; S Murasawa; N Banno; K Miyamoto
PHYSICA C, Dec. 1998, Peer-reviewed
線長手方向に分布する磁界下での交流用超電導線の磁気的不安定性
伴野, 信哉; 雨宮, 尚之; 塚本, 修巳; 熊野, 智幸
電気学会論文誌B, Oct. 1998, Peer-reviewed
Overview of current distribution and re-distribution in superconducting cables and their influence on stability
N Amemiya
CRYOGENICS, May 1998, Peer-reviewed
Influence of current re-distribution on minimum quench energy of superconducting triplex cable against local disturbance
N Amemiya; H Yonekawa; T Ogitsu; E Kobayashi; K Sasaki; N Ohuchi; K Tsuchiya; K Miyashita
CRYOGENICS, May 1998, Peer-reviewed
Electro-magnetic analysis of high T-c superconductors based on anisotropic E-J characteristics
N Amemiya; K Miyamoto; H Mukai; K Sato
ADVANCES IN CRYOGENIC ENGINEERING MATERIALS, VOL 44, PTS A AND B, 1998, Peer-reviewed
Power losses in multifilamentary Ag/BSCCO-2223 tape caused by AC external magnetic field and transport current
M. Ciszek; O. Tsukamoto; D. Miyagi; J. Ogawa; N. Amemiya; M. Uyeyama; K. Hayashi
Advances in Superconductivity, 1998, Peer-reviewed
Ramp rate instability of multifilamentary superconductors due to longitudinal magnetic field
N Banno; N Amemiya; K Kajikawa; H Tateishi
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1997, Peer-reviewed
Magnetic instability of AC multifilamentary wire due to transport current and its dependence on phase of external AC magnetic field
S Fukui; M Ito; O Tsukamoto; N Amemiya
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1997, Peer-reviewed
Numerical analysis of AC losses in high Tc superconductors based on E-j characteristics represented with n-value
N Amemiya; K Miyamoto; N Banno; O Tsukamoto
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1997, Peer-reviewed
Experimental study on current re-distribution and stability of multi-strand superconducting cables
N Amemiya; H Yonekawa; N Tsuchioka; O Tsukamoto
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1997, Peer-reviewed
AC losses of AC superconducting cable due to transport current in external AC magnetic field
S Fukui; O Tsukamoto; N Amemiya; K Miyashita; M Hakamata
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1997, Peer-reviewed
Dependence of magnetic instability of AC superconducting wire on phases of external AC magnetic field
M Ito; S Fukui; O Tsukamoto; N Amemiya
IEEE TRANSACTIONS ON MAGNETICS, Jul. 1996, Peer-reviewed
AC loss and stability analysis in multifilamentary superconductors based on temporal evolution of current/temperature distribution
N Amemiya; N Banno; O Tsukamoto
IEEE TRANSACTIONS ON MAGNETICS, Jul. 1996, Peer-reviewed
Transient heat transfer characteristics of supercritical helium and stability analysis of CCICS
O Tsukamoto; K Ryu; P Michael; N Amemiya
CRYOGENICS, Mar. 1996, Peer-reviewed
AC LOSSES IN MULTIFILAMENTARY SUPERCONDUCTORS CARRYING TRANSPORT CURRENT AND EXPOSED TO EXTERNAL MAGNETIC-FIELD - ANALYSIS OF TEMPORAL EVOLUTION OF CURRENT DISTRIBUTION
N AMEMIYA; N BANNO; K INAHO; O TSUKAMOTO
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1995, Peer-reviewed
DEVELOPMENT OF PROTOTYPE SUPERCONDUCTING LINEAR INDUCTION-MOTOR FOR STEEL MAKING PROCESSES
O TSUKAMOTO; N AMEMIYA; K YAMAGISHI; S SATO; K SATO; T TAKAO; H SHIMIZU
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1995, Peer-reviewed
DEPENDENCE OF SELF-FIELD AC LOSSES IN AC MULTIFILAMENTARY COMPOSITES ON PHASE OF EXTERNAL AC MAGNETIC-FIELD
S FUKUI; O TSUKAMOTO; N AMEMIYA; HLASNIK, I
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1995, Peer-reviewed
STABILITY ANALYSIS OF MULTISTRAND SUPERCONDUCTING CABLES
N AMEMIYA; O TSUKAMOTO
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1995, Peer-reviewed
CURRENT DISTRIBUTION IN MULTIFILAMETARY SUPERCONDUCTORS AND THEIR QUENCH CURRENT DEGRADATION
N AMEMIYA; K INAHO; H ISHIGAMI; O TSUKAMOTO; HLASNIK, I
IEEE TRANSACTIONS ON MAGNETICS, Jul. 1994, Peer-reviewed
PECULIARITIES IN ELECTROMAGNETIC BEHAVIOR OF MF NBTI COMPOSITES FOR AC USE
HLASNIK, I; S FUKUI; N AMEMIYA; O TSUKAMOTO; N IKEDA; T KUMANO; E SUZUKI; M POLAK; J KOKAVEC; L KREMPASKY; P KOTTMAN
IEEE TRANSACTIONS ON MAGNETICS, Jul. 1994, Peer-reviewed
ELECTRIC-FIELD AND LOSSES AT AC SELF-FIELD MODE IN MF COMPOSITES
S FUKUI; HLASNIK, I; O TSUKAMOTO; N AMEMIYA; M POLAK; P KOTTMAN
IEEE TRANSACTIONS ON MAGNETICS, Jul. 1994, Peer-reviewed
STABILITY OF CABLE-IN-CONDUIT INTERNALLY COOLED SUPERCONDUCTORS SUBJECT LOCAL DISTURBANCE
K RYU; O TSUKAMOTO; PC MICHAEL; N AMEMIYA
IEEE TRANSACTIONS ON MAGNETICS, Jul. 1994, Peer-reviewed
DEVELOPMENT AND ELECTRICAL TEST OF A 30 KVA CLASS FULLY SUPERCONDUCTING GENERATOR
O TSUKAMOTO; N AMEMIYA; K YAMAGISHI; T TAKAO; S AKITA; S TORII; K OHISHI; H SHIMIZU
IEEE TRANSACTIONS ON MAGNETICS, Jul. 1994, Peer-reviewed
INFLUENCE OF CURRENT RE-DISTRIBUTION AND THERMAL-DIFFUSION AMONG STRANDS ON STABILITY OF SUPERCONDUCTING CABLES AGAINST LOCAL DISTURBANCES
N AMEMIYA; K RYU; T KIKUCHI; TSUKAMOTO
IEEE TRANSACTIONS ON MAGNETICS, Jul. 1994, Peer-reviewed
EXCITATION CHARACTERISTICS OF SUPERCONDUCTING MAGNET WOUND WITH PARALLEL CONDUCTORS
WK YOO; O TSUKAMOTO; N AMEMIYA
ADVANCES IN CRYOGENIC ENGINEERING, VOL 39, PTS A AND B, 1994, Peer-reviewed
CURRENT DEGRADATION IN SUPERCONDUCTING AC COILS - CAUSES AND STABILIZATION
O TSUKAMOTO; N AMEMIYA; HLASNIK, I
ADVANCES IN CRYOGENIC ENGINEERING, VOL 40, PTS A AND B, 1994, Peer-reviewed
STABILITY OF CABLE-IN-CONDUIT INTERNALLY-COOLED SUPERCONDUCTOR SUBJECT TO LOCAL DISTURBANCE-STABILITY ANALYSIS BASED ON MEASURED TRANSIENT HEAT-TRANSFER OF SHE IN NARROW CHANNEL
K RYU; P MICHAEL; O TSUKAMOTO; N AMEMIYA
CRYOGENICS, 1994, Peer-reviewed
STABILITY AND AC LOSS OF SUPERCONDUCTING CABLES - ANALYSIS OF CURRENT IMBALANCE AND INTER-STRAND COUPLING LOSSES
N AMEMIYA; T KIKUCHI; T HANAFUSA; O TSUKAMOTO
CRYOGENICS, 1994, Peer-reviewed
INFLUENCE OF LONGITUDINAL MAGNETIC-FIELD ON THERMOMAGNETIC INSTABILITIES IN AC SUPERCONDUCTING CABLES
N AMEMIYA; HLASNIK, I; O TSUKAMOTO
CRYOGENICS, Sep. 1993, Peer-reviewed
パラレル導体を用いた超電導マグネットの特性
劉, 源根; 雨宮, 尚之; 塚本, 修巳
低温工学, Jul. 1993, Peer-reviewed
複合多芯線内部の電流分布と磁気的不安定性に与える外部縦磁界・横磁界の影響
雨宮, 尚之; 松木, 隆典; 塚本, 修巳; Ivan Hlasnik
低温工学, Jul. 1993, Peer-reviewed
EXPERIMENTS OF AXIAL-COMPRESSION OF FLUX-CORE SPHEROMAK
N AMEMIYA; A MORITA; M KATSURAI
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, May 1993, Peer-reviewed
STUDY ON FLUCTUATIONS IN SUPPORTING FORCE OF CONDUCTORS CAUSED BY FLUCTUATIONS IN CONDUCTOR DIMENSIONS
T. Takao; O. Tsukamoto; N. Amemiya; A. Nishimura; T. Mito; H. Tamura; J. Yamamoto; O. Motojima
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Mar. 1993, Peer-reviewed
INSTABILITIES IN MULTI-STRAND AC SUPERCONDUCTING CABLES CAUSED BY LONGITUDINAL MAGNETIC FIELD WITH TRANSVERSE MAGNETIC FIELD
N. Amemiya; T. Ohizumi; N. Ikeda; I. Hlasnik; O. Tsukamoto
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Mar. 1993, Peer-reviewed
QUENCH CHARACTERISTICS AND CURRENT DISTRIBUTION OF MULTI-STRAND AC SUPERCONDUCTING CABLES
N. Amemiya; J. Murai; K. Higashihara; K. Yamagishi; S. Shimizu; O. Tsukamoto; S. Torii; S. Akita
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Mar. 1993, Peer-reviewed
ANALYSIS OF DEGRADATION IN AC SUPERCONDUCTING CABLES
S. Torii; S. Akita; R. Ishikawa; K. Uyeda; N. Amemiya; O. Tsukamoto
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Mar. 1993, Peer-reviewed
ANALYSIS OF DEGRADATION IN AC SUPERCONDUCTING CABLES
S TORII; S AKITA; R ISHIKAWA; K UYEDA; N AMEMIYA; O TSUKAMOTO
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL 3, NO 1, MARCH 1993 PTS 2-4, 1993, Peer-reviewed
INSTABILITIES IN MULTISTRAND AC SUPERCONDUCTING CABLES CAUSED BY LONGITUDINAL MAGNETIC-FIELD WITH TRANSVERSE MAGNETIC-FIELD
N AMEMIYA; T OHIZUMI; N IKEDA; HLASNIK, I; O TSUKAMOTO
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL 3, NO 1, MARCH 1993 PTS 2-4, 1993, Peer-reviewed
QUENCH CHARACTERISTICS AND CURRENT DISTRIBUTION OF MULTISTRAND AC SUPERCONDUCTING CABLES
N AMEMIYA; J MURAI; K HIGASHIHARA; K YAMAGISHI; S SHIMIZU; O TSUKAMOTO; S TORII; S AKITA
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL 3, NO 1, MARCH 1993 PTS 2-4, 1993, Peer-reviewed
STUDY ON FLUCTUATIONS IN SUPPORTING FORCE OF CONDUCTORS CAUSED BY FLUCTUATIONS IN CONDUCTOR DIMENSIONS
T TAKAO; O TSUKAMOTO; N AMEMIYA; A NISHIMURA; T MITO; H TAMURA; J YAMAMOTO; O MOTOJIMA
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL 3, NO 1, MARCH 1993 PTS 2-4, 1993, Peer-reviewed
DISTURBANCE CHARACTERISTICS AND STABILITY OF HIGH-CURRENT DENSITY SUPERCONDUCTING WIRES
N AMEMIYA; T TAKAO; O TSUKAMOTO
FUSION ENGINEERING AND DESIGN, Jan. 1993, Peer-reviewed
DEVELOPMENT OF 30KVA CLASS FULLY SUPERCONDUCTING GENERATOR
O TSUKAMOTO; N AMEMIYA; T TAKAO; S AKITA; K OHISHI; H SHIMIZU; Y TANAKA; Y UCHIKAWA
IEEE TRANSACTIONS ON MAGNETICS, Jan. 1992, Peer-reviewed
INFLUENCE OF COPPER-TO-SUPERCONDUCTOR RATIO ON STABILITY
O TSUKAMOTO; N AMEMIYA; T TAKAO
CRYOGENICS, 1992, Peer-reviewed
FORMATION OF FREE-BOUNDARY FLUX-CORE SPHEROMAKS
N AMEMIYA; A HAYAKAWA; M KATSURAI
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Aug. 1991, Peer-reviewed
FREQUENCY-DEPENDENCE OF QUENCH CURRENT OF AC SUPERCONDUCTING WINDING FOR LINEAR INDUCTION-MOTOR
N AMEMIYA; T SUGITA; T TAKAO; O TSUKAMOTO; Y TANAKA; K OISHI; H SHIMIZU; S SATO; Y YONEYAMA; S YATABE
CRYOGENICS, Jul. 1991, Peer-reviewed
STATISTICAL STUDY ON STABILITY AND QUENCH PROTECTION OF POOL COOLED SUPERCONDUCTING MAGNETS
O TSUKAMOTO; N AMEMIYA; H KAGAMI; S YAMAMURA
CRYOGENICS, Jul. 1991, Peer-reviewed
INFLUENCE OF COPPER TO SUPERCONDUCTOR RATIO ON STABILITY OF SUPERCONDUCTORS
N AMEMIYA; O TSUKAMOTO
CRYOGENICS, Jul. 1991, Peer-reviewed
QUENCH CHARACTERISTICS OF SUPERCONDUCTING COIL WINDED BY AC CABLE
O TSUKAMOTO; N AMEMIYA; T TAKAO; T SUGITA
PROCEEDINGS OF THE INTERNATIONAL SYMPOSIUM ON AC SUPERCONDUCTORS, 1991, Peer-reviewed
円筒容器内フラックスコア・スフェロマックの平衡解とその特性
桂井, 誠; 雨宮, 尚之; 早川, 明一
核融合研究, Oct. 1990, Peer-reviewed
MAGNETIC-STRUCTURE IN THE ENTRANCE REGION OF SPHEROMAKS SUSTAINED BY A MAGNETIZED COAXIAL PLASMA GUN UNDER LONG PULSE OPERATION
N AMEMIYA; K TAKAICHI; M KATSURAI
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jun. 1989, Peer-reviewed
Misc.
Mitigation of Shielding-Current-Induced Fields (SCIFs) in HTS Magnets for Accelerator Systems
Yusuke SOGABE; Naoyuki AMEMIYA
TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan), 20 Mar. 2020, Last author
Study on Synchronous Regeneration Characteristics under Braking Mode in 20 kW Class High Temperature Superconducting Induction/Synchronous Machine
唐島 智治; 中村 武恒; 雨宮 尚之; 伊藤 佳孝
電気学会研究会資料. ASC = The papers of technical meeting on application of superconductivity, IEE Japan, 28 Jun. 2016
Research and Development of High Temperature Superconducting Induction/Synchronous Motor for Transportation Equipments : Results of 20 kW-class Prototype and Development of 50 kW-class Model
Three-dimensional model for numerical electromagnetic field analyses of coated superconductors and its application to Roebel cables (vol 25, 095011, 2012)
Masahiro Nii; Naoyuki Amemiya; Taketsune Nakamura
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, Nov. 2012
リラクタンストルクを有する高温超電導誘導同期回転機の提案と特性検討
西村 立男; 中村 武恒; 雨宮 尚之; 伊藤 佳孝
低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,86, p. 201, Nov. 2012
ビスマス系高温超電導固定子巻線の鉄心中通電特性評価
三澤 慎太郎; 中村 武恒; 北野 紘生; 雨宮 尚之; 伊藤 佳孝; 吉川 雅章
低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,86, p. 198, Nov. 2012
液体窒素冷却した薄膜線材レーストラックコイル4個で構成される2極マグネットの磁場測定
大竹 宏明; 野 拓也; 雨宮 尚之; 中村 武恒; 荻津 透; 小柳 圭; 来栖 努
低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,86, p. 53, Nov. 2012
6素線からなる高温超伝導Roebelケーブルの全交流損失測定
米田宇志; 雨宮尚之; 中村武恒; JIANG Zhenan
電気学会全国大会講演論文集, 05 Mar. 2012
重粒子線がん治療装置と超伝導
雨宮 尚之
冷凍, Feb. 2012, Invited
Focus section on superconducting power systems PREFACE
D. A. Cardwell; N. Amemiya; R. Fair
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, Jan. 2012
高温超電導誘導同期機における自律安定性の実証
北野紘生; 中村武恒; 関口大輔; 雨宮尚之; 伊藤佳孝
低温工学・超電導学会講演概要集, 09 Nov. 2011
Improved stability of magnetic field in superconductor coils by applying twisted Bi-2223 multifilamentary tapes
LI Quan; AMEMIYA Naoyuki; NAKAMURA Taketsune
低温工学・超電導学会講演概要集, 09 Nov. 2011
Model for electromagnetic field analysis of superconducting power transmission cable comprising spiraled coated conductors (vol 24, 085014, 2011)
低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,82, p. 133, May 2010
CHATS-2008: Workshop on computation of thermo-hydraulic transients in superconductors, October 29-November 1, 2008, KEK, high energy accelerator research organization, Tsukuba, lbaraki, Japan Preface
低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity, 26 May 2008
Design and Experimental Results of Three-Phase Superconducting Fault Current Limiter (2) : Superconducting Coils Wound with REBa_2Cu_3O_y Coated Conductor
低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity, 21 May 2003
Application of parallel algorism to FEM analysis of electromagnetic field in superconductor
ITO Fumihiko; AMEMIYA Naoyuki
低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity, 21 May 2003
Total AC loss in twisted and non-twisted multifilamentary Bi-2223 superconducting tapes carrying AC transport current in AC longitudinal magnetic field
JIANG Zhenan; AMEMIYA Naoyuki; JIN Feng; AYAI Naoki; HAYASI Kazuhiko
低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity, 30 Oct. 2002
Numerical simulation of SN transition of 2D superconductors
HIGA Morichika; AMEMIYA Naoyuki
低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity, 18 May 2002
Discussions on the temporary behavior of measured magnetic fields in stack of double-pancake coils wound with striated and copper-plated coated conductors
N.Amemiya
10th Asian Conference on Applied Superconductivity and Cryogenics (ACASC), 2nd International Cryogenic Materials Conference in Asia (Asian ICMC), 07 Jan. 2020, Invited
Ac loss and shielding-current-induced field in a coated-conductor test magnet for accelerator applications under repeated excitations
AMEMIYA Naoyuki
26th International Conference on Magnet Technology (MT-26), 25 Sep. 2019, Invited
Magnetic field measurements of stack of double-pancake coils wound with striated and copper-plated coated conductors
AMEMIYA Naoyuki
26th International Conference on Magnet Technology (MT-26), 25 Sep. 2019, Invited
Key issues in HTS magnet and conductor technology toward various applications
AMEMIYA Naoyuki
26th International Conference on Magnet Technology (MT-26), 24 Sep. 2019, Invited
高温超電導線材に対する期待
雨宮尚之
電気学会 電力・エネルギーフォーラムおよび超電導機器研究会/第3回超電導応用研究会シンポジウム「超電導化に向かう円形加速器」, 27 Aug. 2019, Invited
HTS大型導体の交流損失
雨宮 尚之
2018年度第3回超電導応用研究会シンポジウム, 15 Mar. 2019, Invited
Progress of S-Innovation project on cryocooler-cooled HTS accelerator magnet: beam-guiding and beam-injection tests of an HTS magnet on HIMAC beam line
AMEMIYA Naoyuki
31th International Symposium on Superconductivity (ISS 2018), 13 Dec. 2018, Invited
Ac Loss measurements of CORC wires carrying ac transport currents and / or exposed to ac transverse magnetic fields
Applied superconductivity as enabling technology in energy, medical, and other practical sectors
N. Amemiya
New Turkey Strategic Research center International Conference on Science and Technology, Oct. 2016, New Turkey Strategic Research acenter International Conference on Science and Technology 事務局, Invited
Development and test of cryocooler-cooled model magnet wound with coated conductors for accelerator applications
Electromagnetic behavior of striated coated conductor with finite transverse resistance between filaments: straight conductors and conductors wound into a pancake coil or layer of solenoid coil
Modelling pancake coils and solenoid coils wound with coated conductors for electromagnetic field analyses: using exact coil geometry or using axisymmetric approximation
N. Amemiya
5th International Workshop on Numerical Modelling of High Temperature Superconductors (HTS Modelling 2016), Jun. 2016, HTS Modelling 2016 事務局, Invited
Ac losses and field quality deterioration by magnetization in accelerator agnets made with coated conductors
N. Amemiya
5th edition of International Conference on Superconductivity and Magnetism (ICSM2016), Apr. 2016, ICSM2016 事務局, Invited
Electromagnetic behaviours of high Tc superconductors -ac losses and conductor-magnetization deteriorating field quality of magnets-
N. Amemiya
608. WE-Heraeus-Seminar on "Superconducting Materials on Their Way from Physics to Applications", Feb. 2016, 608. WE-Heraeus-Seminar on "Superconducting Materials on Their Way from Physics to Applications" 事務局, Invited
Influence of magnetization on field qualities of accelerator magnets made with coated conductors
N. Amemiya
European Conference on Applied Superconductivity (EUCAS 2015), Sep. 2015, EUCAS 2015 事務局, Invited
Unveiling classical electromagnetic phenomena in superconductors toward their high performance applications
N. Amemiya
The 9th International Conference on Magnetic and Superconducting Materials (MSM15), Apr. 2015, MSM15 事務局, Invited
Understanding and control of electromagnetic behaviors of high Tc superconductors toward their attractive applications
N. Amemiya
2015 Joint UK-Japan Workshop on Physics and Applications of Superconductivity, Apr. 2015, 2015 Joint UK-Japan Workshop on Physics and Applications of Superconductivity 事務局, Invited
Electromagnetic field analyses of coils and assembled conductors consisting of coated conductors
N. Amemiya
International Workshop on Coated Conductors for Applications 2014 (CCA 2014), Nov. 2014, CCA 2014 事務局, Invited
Numerical electromagnetic field analyses of High Tc superconductor cables and coils with three-dimensional geometries
N. Amemiya
4th International Conference on Superconductivity and Magnetism (ICSM 2014), Apr. 2014, ICSM 2014 事務局, Invited
Material aspect of applications of coated conductors to accelerator magnets
N. Amemiya
Materials Research Society Spring Meeting 2014 (MRS2014), Apr. 2014, MRS2014 事務局, Invited
Influence of HTS tape magnetization on magnetic field harmonics of dipole magnet
N. Amemiya
International Union of Materials Research Societies - International Conference of Electronic Materials 2012 (IUMRS-ICEM 2012), Sep. 2012, IUMRS-ICEM 2012 事務局, Invited
AC loss measurements of roebel cable consisting of six coated conductors carrying AC current in AC magnetic field
N. Amemiya
3rd International Conference on Superconductivity and Magnetism (ICSM 2012), May 2012, ICSM 2012 事務局, Invited
Challenge to accelerator magnets using high Tc superconductors
N. Amemiya
3rd International Conference on Superconductivity and Magnetism (ICSM 2012), May 2012, ICSM 2012 事務局, Invited
加速器用高温超伝導マグネット実現に向けた基盤技術研究開発
雨宮尚之
関西支部 2012年度第1回講演会・見学会, May 2012, 低温工学・超電導学会, Invited
Electromagnetic field analysis of superconductor based on T-formulation
N. Amemiya
2nd International Workshop on Numerical Modelling of High Temperature Superconductors, Apr. 2011, 2nd International Workshop on Numerical Modelling of High Temperature Superconductors 事務局, Invited
2006 Taiwan International Conference on Superconductivity & The 8th Workshop on Low-temperature Physics, Jul. 2006, 2006 Taiwan International Conference on Superconductivity & The 8th Workshop on Low-temperature Physics 事務局, Invited
AC losses, superconducting power cables and fault current limiters
N. Amemiya
The Jan Evetts and 7th SCENET School of Superconducting Materials and Applications, Jul. 2006, The Jan Evetts and 7th SCENET School of Superconducting Materials and Applications 事務局, Invited
AC losses in coated conductors and in superconducting electrical devices
N. Amemiya
International Workshop on Coated Conductors for Applications 2006, Jul. 2006, International Workshop on Coated Conductors for Applications 2006 事務局, Invited
Perspective of AC loss reduction of YBCO coated conductor
N. Amemiya
International Workshop on Coated Conductors for Applications 2005 (CCA 2005), Dec. 2005, CCA 2005 事務局, Invited
AC loss characteristics of YBCO coated conductors
N. Amemiya
2005 Material Research Society Spring Meeting, Mar. 2005, 2005 Material Research Society Spring Meeting 事務局, Invited
AC loss characteristics of coated conductor and the perspective for the AC loss reduction
N. Amemiya
17th International Symposium on Superconductivity (ISS 2004), Nov. 2004, ISS 2004 事務局, Invited
AC loss characteristics of multifilamentary YBCO coated conductors
Total AC loss characteristics of high Tc superconducting tapes
N. Amemiya
The 15th International Symposium on Superconductivity, Nov. 2002, The 15th International Symposium on Superconductivity事務局, Invited
AC performances of high Tc superconductors
N. Amemiya
PAC RIM4 International Conference on Advanced Ceramics and Glasses, Nov. 2001, PAC RIM4 International Conference on Advanced Ceramics and Glasses 事務局, Invited
Current distribution and AC losses in coated conductors
N. Amemiya
The 2001 International Workshop on Superconductivity, Jun. 2001, The 2001 International Workshop on Superconductivity 事務局, Invited
AC loss characteristics of high Tc superconductors
N. Amemiya
The 4th Japan-Central Europe Joint Workshop on Energy and Information in Non-linear Systems, Nov. 2000, The 4th Japan-Central Europe Joint Workshop on Energy and Information in Non-linear Systems 事務局, Invited
Mode of magnetic flux penetration into high Tc superconductors with various cross-sectional shape and their AC loss characteristics
N. Amemiya
The 13th International Symposium on Superconductivity, Oct. 2000, The 13th International Symposium on Superconductivity 事務局, Invited
AC loss characteristics of multifilamentary HTS tapes
特許US8,290,555B2, Superconducting wire, superconducting conductor, and superconducting cable,
Yagi, Mukoyama; Shiohara, Izumi; Amemiya
粒子観察装置
徳良 晋; 河口 紀仁; 伊澤 淳; 原 正一; 雨宮 尚之
超電導線材、超電導導体および超電導ケーブル
八木 正史; 向山 晋一; 塩原 融; 和泉 輝郎; 雨宮 尚之
超電導線材、超電導導体および超電導ケーブル
八木 正史; 向山 晋一; 塩原 融; 和泉 輝郎; 雨宮 尚之
高温超電導線の交流損失低減法
塚本 修巳; 雨宮 尚之; 福井 聡
Works
高温超伝導体の交流特性に関する研究
From 2003, To 2004
高い周波数におけるYBCO超伝導線の交流損失特性
From 2003, To 2004
Study on AC characteristics of high Tc superconductors
From 2003, To 2004
AC loss properties of YBCO superconductors at high frequencies
From 2003, To 2004
高温超伝導体の交流損失低減の研究と交流損失の持ち回り試験
From 2002, To 2003
Study on AC loss reduction of high Tc superconductors and round robin test of AC loss in high Tc superconducting tapes
From 2002, To 2003
イットリウム系超電導線材の超電導基礎特性評価とそれに基づく電磁現象シミュレーションの研究
From 2003
次世代線材電磁気特性評価及びシミュレーション技術
From 2003
限流素子用YBCO薄膜の特性評価に関する共同研究
From 2003
Evaluation of fundamental superconducting properties of YBCO coated conductors and numerical simulation on their electromagnetic phenomena
From 2003
Evaluation of electromagnetic properties of next generation high Tc superconductors and tehnology for numerical simulation
From 2003
Joint research on evaluation of properties of YBCO film for fault current limiter
From 2003
イットリウム系超電導線材の超電導基礎特性評価とそれに基づく電磁現象シミュレーションの研究
From 2002
超電導薄膜局所Jc測定および交流損失に関する共同研究
From 2002
限流器用超電導薄膜素子の電磁特性把握に関する研究
From 2002
Evaluation of fundamental superconducting properties of YBCO coated conductors and numerical simulation on their electromagnetic phenomena
From 2002
Joint research on local Jc measurements and AC loss of superconducting film
From 2002
Research on electromagnetic properties of superconducting film for fault current limiter
From 2002
高温超伝導体の交流電力応用に関する日米共同研究 : 交流損失の測定・解析及び導体開発
From 2000, To 2001
U.S.-Japan collaborative R & D program on AC electrical power applications of high-temperature superconductors : AC loss measurements and analysis, and conductor development
Study on systematic design method of superconducting wires and assembled conductors for AC power apparatuses
From 1999, To 2001
Study on microstructure design for low AC loss HTS wire
From 1999, To 2001
Nb3Al超伝導線材の安定性と常伝導伝搬特性の評価
From 2000
Evaluation of stability and quench propagation property of Nb3Al superconducting wires
From 2000
超伝導ケーブルにおけるBoundary Induced Coupling Currentと安定性
From 1998, To 1999
Boundary Induced Coupling Current and its stability of superconducting cables
From 1998, To 1999
高温超電導体の非超電導材料との複合構造の最適化による交流超電導性能向上に関する研究
From 1997, To 1999
Improvement of AC performances of high critical temperature oxide superconductors by optimizing structures of their composites with non-superconductive materials
From 1997, To 1999
超電導科学技術の大型応用調査研究
From 1999
Large scale application of superconductivity science and technology
From 1999
電力ケーブル用高温酸化物超伝導体開発のための基礎研究
From 1996, To 1998
電力輸送ケーブル用高温超伝導体に関する日米共同研究
From 1996, To 1998
Study on high Tc superconductors for power transmission line
From 1996, To 1998
Japan/US collaborative research on high temperature superconductors for power transmission cables
From 1996, To 1998
素線間接触電気抵抗・接触熱伝導率と超伝導撚り線導体の安定性
From 1996, To 1997
Influence of inter strand resistance and thermal conductance on stability of supercoducting cables
From 1996, To 1997
大型強制冷却超電導導体の電流分布不均一に関する研究
From 1997
Study on current imbalance in large forced flow cooled superconductors
From 1997
縦成分・横成分をもった外部磁界の多芯線の安定性に与える影響についての研究
From 1995, To 1996
Influence of external magnetic field with longitudinal and transverse components on stability of multifilamentary superconductors
From 1995, To 1996
次世代高温酸化物超伝導機器に関する日米共同研究
From 1994, To 1995
Japan/US collaborative research on next generation high-Tc oxide superconductive machines and devices
From 1994, To 1995
核融合装置における超伝導導体の磁気的(縦磁界)不安定性
From 1995
Thermo-magnetic, longitudinal magnetic field, instabilities in superconductors for nuclear fusion devices
From 1995
大型超伝導導体における磁気的不安定性
From 1994
Narrow-channel内の超臨界圧ヘリウムの過渡熱伝達特性
From 1994
Thermo-magnetic instabilities in large scale superconductors
From 1994
Transient heat transfer of supercritical helium in narrow channel
From 1994
大型ヘリカル装置用超伝導導体における磁気的不安定性
From 1993
Narrow-channel内の超臨界圧ヘリウムの過渡熱伝達の研究
From 1993
Thermo-magnetic instabilities in multifilamentary superconductors for Large Helical Device
From 1993
Study on transient heat transfer of supercritical helium in narrow channel
From 1993
Awards
May 2004
Cryogenic Association of Japan, Oyama Memorial Award for Encouragement of Research
May 2010
Cryogenic Society of Japan / Cryogenic Association of Japan, Award for Excellent Presentation
Media Coverage
高温超電導 粒子加速器電磁石を開発
電気新聞, 産業・技術, 14 Dec. 2018, Paper
液体ヘリウムなしで安定 超電導電磁石 がん粒子線治療に応用
日刊工業新聞, 科学技術・大学, 14 Dec. 2018, Paper
超電導限流器を開発
化学工業日報, 30 Jan. 2008, Paper
新超電導限流器を開発
日刊工業新聞, 30 Jan. 2008, Paper
超電導限流器の実用機開発
電気新聞, 30 Jan. 2008, Paper
2/100秒で電流遮断
日経産業新聞, 30 Jan. 2008, Paper
交流損失0.05ワットまで低減
日刊産業新聞, 11 Aug. 2006, Paper
世界最小の交流損失
電気新聞, 11 Aug. 2006, Paper
超電導ケーブル送電ロスを半減
日経産業新聞, 11 Aug. 2006, Paper
世界最小の交流損失達成
日刊工業新聞, 11 Aug. 2006, Paper
京都大学、高温超伝導線の交流損失を20分の1に低減しモーターなどの超伝導化に道を拓く
TechCrunch Japan, 17 Nov. 2021, Internet
京都大学、古河電気工業 高温超伝導の交流損失を20分の1に低減 脱炭素への貢献に期待
EnergyShift, 17 Nov. 2021, Internet
古河電工と京都大学/イットリウム系高温超電導線材/磁場中の電力損失を大幅低減
日刊鉄鋼新聞Web版, 17 Nov. 2021, Internet
古河電工京都大学 イットリウム系高温超電導線材 磁場中の電力損失を大幅低減
日刊鉄鋼新聞, 17 Nov. 2021, Paper
古河電工 高温超電導線 交流損失を低減 スパイラルで20分の1に
日刊産業新聞, 非鉄, 17 Nov. 2021, Paper
高温超電導線 エネ損失 約20分の1 古河電工など 巻付け構造に
電気新聞, 産業・技術, 17 Nov. 2021, Paper
交流損失世界最小に
化学工業日報, 11 Aug. 2006, Paper
External funds: Kakenhi
High-temperature-superconductor technology toward high-speed and high-field beam scanning magnets for heavy-ion cancer therapy
Grant-in-Aid for Scientific Research (A)
Medium-sized Section 21:Electrical and electronic engineering and related fields
Control of electromagnetic phenomena in high Tc superconductor tapes to generate stable and uniform high magnetic fields by using high Tc superconductor magnets
Systemization of elementary technology for high temperature superconductor AC applications based on electro-magnetics of fine structures of conductors
Grant-in-Aid for Scientific Research (S)
Yokohama National University
Osami TSUKAMOTO
Project Closed
交流損失;高温超伝導;Y系線材;Bi銀シース線材;集合導体;超伝導電磁現象;交流損失測定;交流損失低減;交流超伝導線材;ビスマス線材;イットリウム線材;磁気ナイフ法;カロリメトリック;ビスマス系線材;イットリウム系線材, AC Losses;High Temperature Superconductor;YBCO Wire;Bi;Ag Sheathed Wire;Assembled Conductor;Electro magnetic;AC Loss Measurement;Reduction of AC Losses
Studies to clarify methods to reduce AC losses of high temperature superconducting (LHS) wires
Grant-in-Aid for Scientific Research (B)
Yokohama National University
O. TSUKAMOTO
Project Closed
高温超伝導;交流通電損失;n値;ビスマス系銀シース線材;多芯線材;集合導体;集合導体交流損失低減;高温酸化物超伝導体;交流損失;テープ線材;イットリウム線材;電力ケーブル;変圧器;超伝導電力ケーブル;高温酸化物超伝導;超伝導フィラメント;交流劣化現象;磁気的不安定性;磁束フロー, High temperature superconductor;AC loss;Multifilament wire;AC transport current loss;n value;Bi silver sheathed tape;Assembled conductor
Studies on high Tc superconductors for power transmission line
Grant-in-Aid for international Scientific Research
Yokohama National University
M. SUGAHARA
Project Closed
高温酸化物超伝導体;交流通電損失;テープ線材;ビスマス系銀シース線材;超伝導電力ケーブル;集合導体;集合導体交流損失低減;ビスマス;イットリウム;溶融法;高温酸化物超伝導導体, High temperature superconductor;AC loss;Multifilament wire;AC transport current loss;Assembled conductor;Bi silver sheathed tape;Tape conductor
Development of the use exception and the systematic design technique of AC Superconductor
Grant-in-Aid for Scientific Research (A)
YOKOHAMA NATIONAL UNIVERSITY
Osami TSUKAMOTO
Project Closed
交流超電導コイル;Nb3Sn交流超伝導線;NbTi交流線;超伝導フィラメント;交流劣化現象;磁気的不安定性;クニンチ;交流超伝導コイル;クエンチ;2.5T交流超伝導マグネット;交流通電損失;交流通電安定性;交流超伝導機器;交流超伝導線;位相差, AC SUPERCONDUCTING COIL;NB3SN AC SUPERCONDUCTING CABLE;NB7I AC CABLE;SUPERCONDUCTING FILAMENT;AC DEGRADATION PHENOMENON;MAGNETIC INSTABILITY;QUENCH