11 T liquid helium-free superconducting magnet

✍ Scribed by K. Watanabe; S. Awaji; J. Sakuraba; K. Watazawa; T. Hasebe; K. Jikihara; Y. Yamada; M. Ishihara

• Book ID: 104111220
• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 683 KB
• Volume: 36
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/s0011-2275(96)00091-4

✦ Synopsis

An 11 T liquid helium-free superconducting magnet designed at 6 K in vacuum using high temperature superconducting current leads was developed. The NbTi/Nb,Sn coil was conductively cooled down from room temperature to 4.1 K in 40 h by two 4 K GMcryocoolers. In a performance test, the coil temperature rose to 6.8 K for the inner Nb,Sn coil and 5.9 K for the outer NbTi coil, while sweeping the field at 5A min-'. A central field of 10.7T 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.