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Content Provider | IEEE Xplore Digital Library |
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Author | Junsheng Cheng Yuanzhong Lei Chunyan Cui Lankai Li Shousen Song Yi Li Zhipeng Ni Shunzhong Chen Hui Wang Qiuliang Wang |
Copyright Year | 2002 |
Abstract | The nuclear magnetic resonance superconducting magnet technology is being developed in our laboratory. Because the upper critical magnetic field of NbTi alloy is not high enough, an Nb3Sn superconductor has to be used in the manufacture of magnets for 500 MHz and above. In this paper, an experimental Nb3Sn superconducting coil was manufactured to study the fabrication technology. The bobbin with Al2O3 ceramic coating is made of stainless steel. A vertical tube type vacuum heat treatment furnace was established for Nb3Sn formation. Heat treatment parameters for the Nb3Sn coil were done at 670°C in vacuum. Vacuum pressure impregnation was done to strengthen the assembly. The Nb3Sn coil, the switch, and the current leads were joined together using superconducting solder matrix replacement method. In the test the maximum current of the Nb3Sn coil was 263 A, corresponding to a central magnetic field of 3.47 T. Persistent current mode operation was also successfully performed. |
Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
Starting Page | 4401204 |
Ending Page | 4401204 |
Page Count | 1 |
File Size | 485787 |
File Format | |
ISSN | 10518223 |
Volume Number | 23 |
Issue Number | 3 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2013-06-01 |
Publisher Place | U.S.A. |
Access Restriction | One Nation One Subscription (ONOS) |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Niobium-tin Superconducting magnets Superconducting coils Wires Heat treatment Joints superconducting joint Epoxy impregnation heat treatment $\hbox{Nb}_{3}\hbox{Sn}$ coil |
Content Type | Text |
Resource Type | Article |
Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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