期刊
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
卷 21, 期 3, 页码 2110-2113出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TASC.2010.2082475
关键词
Bi-2223; high-field magnet; hoop stress; NMR spectrometer
资金
- Japan Science and Technology Agency (JST)
Because of their high critical fields, high-superconductors (HTS) are considered to be the only solution to dramatically increase the highest fields of NMR magnets. We have successfully demonstrated that a 500 MHz HTS/LTS NMR system with a Bi-2223 innermost coil could be used for solution NMR in a driven-mode operation. As the next step, the upgrade of the 920 MHz NMR system installed at the Tsukuba Magnet Laboratory is underway. The innermost Nb(3)Sn coil has been replaced by a Bi-2223 coil. The coil was fabricated as a layer-wound coil using five Bi-2223 conductors reinforced with bronze tapes. It was connected in series with the outer Nb(3)Sn and NbTi coils. The magnet is expected to generate a field of 24.2 T (1.03 GHz of (1)H resonance frequency) at an operating current of 244.4 A. The test using the Bi-2223 coil and the outer Nb(3)Sn coils in combination was successfully carried out. The coil has been installed in the 1.03 GHz NMR magnet. Its cooling and operation are scheduled to take place within Fiscal Year 2010.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据