Abstract #4845
Sequencial Abnormal Events in High-Temperature Superconducting MRI Magnet
Shin-ichi Urayama 1 , Yasuyuki Terao 2 , Osamu Ozaki 2 , Hitoshi Kitaguchi 3 , Shinya Kawashima 2 , Takashi Hase 2 , Ken-ichi Sato 4 , and Hidenao Fukuyama 1
1
Human Brain Research Center, Kyoto
University, Kyoto, Kyoto, Japan,
2
Kobe
Steel, Ltd., Kobe, Japan,
3
National
Institute for Materials Science, Ibaraki, Japan,
4
Sumitomo
Electric Industries, Ltd., Osaka, Japan
Because of recent deficit of liquid helium, helium-free
MRI magnets with high temperature superconducting (HTS)
materials have been expected as one of the solutions. We
have developed a 3T HTS-MRI system for human brain
research with Bi-2223 tapes and showed its feasibilities
at 1.5T. However, in spite that we succeeded energizing
to 3T three times, sequencial abnormal events were
happened for longer than ten minutes during the
ramp-down at the third trial to 3T. Here, we show these
unique events specific to HTS magnets.
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