Open AccessDevelopment of a Half-Size 3 T REBCO Superconducting Magnet for MRI
Author(s) -
Hideaki Miura,
Tetsuya Matsuda,
Kota Nomura,
Tatsuya Inoue,
Yusuke Morita,
Ryo Eguchi,
Shunsuke Otake,
Hajime Tanabe,
Shiyoshi Yokoyama,
S. Sato
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1559/1/012125
Subject(s) - electromagnetic coil , materials science , magnet , superconducting magnet , liquid helium , superconductivity , yield (engineering) , millimeter , superconducting coils , nuclear engineering , nuclear magnetic resonance , composite material , helium , condensed matter physics , mechanical engineering , electrical engineering , physics , optics , atomic physics , engineering
We have been developing a liquid-helium-free 3T magnet for MRI using high-temperature superconducting (HTS) wires in a HTS application project supported by the New Energy and Industrial Technology Development Organization (NEDO). A half-size 3T-MRI magnet, which has 220 coils each of order meter size, has been manufactured in order to demonstrate MR imaging. 269 REBCO single-pancake coils were manufactured. We investigated the yield rate of meter-class REBCO coils by experiment and the degraded state of coils by calculation. It was found that the yield rate was 82 % and the degraded length was order millimeter size in total length of coil, which was several hundred meters. We will consider the factors of coil degradation and how to increase the yield rate of a REBCO coil.