Upgraded Cryogen-Free 20 T Superconducting Magnet

被引：14

作者：

Hanai, Satoshi ^{[1
]}

Tsuchihashi, Takahiro ^{[1
]}

Minemoto, Yuji ^{[1
]}

Ioka, Shigeru ^{[1
]}

Watanabe, Kazuo ^{[2
]}

Awaji, Satoshi ^{[2
]}

Oguro, Hidetoshi ^{[2
]}

机构：

[1] Toshiba Co Ltd, Yokohama, Kanagawa 2300045, Japan

[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2014年 / 24卷 / 03期

关键词：

Bi2223 tape conductor; cryogen-free magnet; high magnetic field; hoop stress; hysteresis loss; upgrade;

D O I：

10.1109/TASC.2013.2288923

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：

We have constructed an 18 T superconducting magnet conductively cooled by a GM/JT (Gifford-McMahon/Joule-Thomson) cryocooler. A double-pancake stacked insert coil using Ag-sheathed Bi2Sr2Ca2Cu3O10 (Bi2223) tape with stainless steel reinforcement has generated 2.5 T in a 15.5 T outer LTS coil. After we constructed the cryogen-free 18 T superconducting magnet (18 T-CSM), Bi2223 tape conductors have been improved in both critical current and strength. The critical current of the conductor doubled and a tape conductor with copper alloy reinforcement which has a strength of 250 MPa at 77 K was developed. So we developed a new Bi2223 insert coil for the cryogen-free superconducting magnet which can generate 4.5 T in a 15.5 T outer LTS coil by exchanging the insert coil. The new 20 T cryogen-free superconducting magnet (20 T-CSM) can generate constant magnetic fields up to 20 T in a 52-mm room-temperature bore.

引用

页数：4

共 45 条

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