A 6 T REFRIGERATOR-COOLED NBTI SUPERCONDUCTING MAGNET WITH 180 MM ROOM-TEMPERATURE BORE

被引：6

作者：

URATA, M

KURIYAMA, T

YAZAWA, T

KOYANAGI, K

YAMAMOTO, K

NOMURA, S

YAMADA, Y

NAKAGOME, H

MURASE, S

MAEDA, H

HORIGAMI, O

机构：

[1] Toshiba R&D Center, Kawasaki, Kanagawa, 210, 4-1, Ukishima

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1995年 / 5卷 / 02期

关键词：

D O I：

10.1109/77.402516

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A 6 T NbTi superconducting magnet, cooled by a 4 K GM (Gifford-McMahon) refrigerator has been developed. Magnetic material, Er3Ni, are used as the regenerator to cool the coil to liquid helium temperature. The central field strength in the 180 mm room temperature bore is designed to be 6 T. NbTi coil dimensions are, 215 mm in inner diameter, 279 mm in outer diameter, and 240 mm in axial length. The coil winding is an epoxy-impregnated structure without a bore tube, thereby reducing mechanical disturbances. The coil heat is removed through the outer metal cylinder. A pair of Bi(2212) current leads has been developed to reduce heat leakage into the 4 K level. A cold diode is used to protect the coil even if the oxide lead is burned out. The magnet attained 6.45 T central field at 3.61 K coil-winding temperature.

引用

页码：169 / 172

页数：4

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