Laboratory for Functional Ultra-High-Field Magnet Technology | RIKEN BDR

Laboratory for Functional Ultra-High-Field Magnet Technology

Unit Leader

Yoshinori YanagisawaPh.D.

Photo of principal investigator

  • Location:Yokohama / Central Research Building
  • E-mail:yoshinori.yanagisawa[at]riken.jpPlease replace [at] with @.

Research Summary

A Nuclear Magnetic Resonance (NMR) spectrometer can analyze the structure of various substances such as biological samples, polymers, nanomaterials, and natural products using a magnetic field. The analytical performance of an NMR improves as the strength of the magnetic field increases. We will conduct research on cutting-edge magnet technology that integrates high-temperature superconductor wire, coils, and joints as a functional ultra-high magnetic field magnet for NMR. Based on the technology, we will develop the world’s highest magnetic field 1.3 GHz (30.5 Tesla) class NMR magnet as well as ultra-compact NMR magnets that do not consume liquid helium, to contribute to the research of biosystems dynamics through analyses of biological samples.

Research Theme

  • NMR
  • High-temperature superconductor
  • Ultra-high magnetic field

Main Publications List

  • Takahashi S, Suetomi Y, Takao T, et al.
    Hoop stress modification, stress hysteresis and degradation of a REBCO coil due to the screening current under external magnetic field cycling.
    IEEE Transaction on Applied Superconductivity 30, 4602607 (2020)
  • Suetomi Y, Takahashi S, Takao T, et al.
    A novel winding method for a no-insulation (NI) layer-wound REBCO coil to provide a short magnetic field delay and self-protect characteristics.
    Superconductor Science and Technology 32, 045003 (13pp) (2019)
  • Piao R, Miyoshi Y, Yoshikawa M, et al.
    Design and development of a compact 1 GHz (23.5 T)-class NMR magnet with Bi-2223 inner coils.
    IEEE Transaction on Applied Superconductivity 29, 4300407 (2019)
  • Maeda H, Shimoyama J, Yanagisawa Y, et al.
    The MIRAI program and the new super-high field NMR initiative in Japan.
    IEEE Transaction on Applied Superconductivity 29, 4602409 (2019)
  • Maeda H, Yanagisawa Y. Future prospects for NMR magnets: A perspective. Journal of Magnetic Resonance 306, 80-85 (2019)
  • Ohki K, Nagaishi T, Kato T, et al.
    Fabrication, microstructure and persistent current measurement of an intermediate grown superconducting (iGS) joint between REBCO-coated conductors.
    Superconductor Science and Technology 30, 115017 (7pp) (2017)
  • Suetomi Y, Yanagisawa K, Nakagome H, et al.
    Mechanism of notable difference in the field delay times of no-insulation layer-wound and pancake-wound REBCO coils.
    Superconductor Science and Technology 29, 105002(9pp) (2016)
  • Piao R, Iguchi S, Hamada M, et al.
    High resolution NMR measurements using a 400 MHz NMR with an (RE)Ba2Cu3O7-x high-temperature superconducting inner coil: Towards a compact super-high-field NMR.
    Journal of Magnetic Resonance 263, 164-171 (2016)
  • Hashi K, Ohki S, Matsumoto S, et al.
    Achievement of 1020 MHz NMR.
    Journal of Magnetic Resonance 256, 30-33 (2015)
  • Maeda H, Yanagisawa Y.
    Recent developments in high-temperature superconducting magnet technology. (Review)
    IEEE Transaction on Applied Superconductivity 24, 4602412 (2014)


Yoshinori YanagisawaUnit Leader yoshinori.yanagisawa[at]  
Renzhong PiaoTechnical Scientist renzhong.piao[at]  
Yu SuetomiSpecial Postdoctoral Researcher yu.suetomi[at]  

*:concurrent / Please replace [at] with @.