11 T liquid helium-free superconducting magnet

被引:53
作者
Watanabe, K [1 ]
Awaji, S [1 ]
Sakuraba, J [1 ]
Watazawa, K [1 ]
Hasebe, T [1 ]
Jikihara, K [1 ]
Yamada, Y [1 ]
Ishihara, M [1 ]
机构
[1] SUMITOMO HEAVY IND LTD, CTR RES & DEV, HIRATSUKA, KANAGAWA 254, JAPAN
关键词
high temperature superconducting current lead; GM-cryocooler; superconducting magnet; high field;
D O I
10.1016/S0011-2275(96)00091-4
中图分类号
O414.1 [热力学];
学科分类号
摘要
An 11 T liquid helium-free superconducting magnet designed at 6 K in vacuum using high temperature superconducting current leads was developed. The NbTi/Nb3Sn coil was conductively cooled down from room temperature to 4.1 K in 40 h by two 4 K GM-cryocoolers. In a performance test, the coil temperature rose to 6.8 K for the inner Nb3Sn coil and 5.9 K for the outer NbTi coil, while sweeping the field at 5 A min(-1). A central field of 10.7 T in a 52 mm room temperature bore was generated at an operating current of 149 A. Holding the field at 10.5 T was achieved continuously for 24 h at a constant coil temperature of 4.8 K. (C) 1996 Elsevier Science Limited
引用
收藏
页码:1019 / 1025
页数:7
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