Shin-ichi Urayama1, Osamu Ozaki2, Hitoshi Kitaguchi3, Kazuyuki Takeda, Iwao Nakajima4, Naoki Ohnishi5, Michael Poole6, Ken-ichi Sato7, Hidenao Fukuyama1
1HBRC, Kyoto University, Kyoto, Japan; 2Kobe Steel, Ltd., Kobe, Japan; 3National Institute for Materials Science, Tsukuba, Japan; 4Takashima Seisakusyo, Tokyo, Japan; 5Astrostage, Inc., Tokyo, Japan; 6University of Queensland, Queensland, Australia; 7Sumitomo Electric Industries, Ltd., Osaka, Japan
The demand for the exhaustible natural resource helium is increasing rapidly, with 20% of global production used as the cryogen in superconducting MRI magnets. High-temperature superconducting (HTS) materials show great potential for realizing helium-less magnets. This is the first report for a cryogen-free 3T-MRI scanner for human brain research using Bi-2223 tapes operating at a temperature of 20K.