Research on magnetomechanical optimization of superconducting joint for remctntable large SC magnet system

可伸缩大型超导磁体系统超导接头磁力优化研究

• 批准号: 12680487
• 负责人: HASHLZUME Hidetoshi
• 金额: $ 2.43万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12680487/
• 关键词: High Tc superconductor; Remountable magnet; Butt jointing; Fusion reactor; 高温超電導

Experimental results show that the contacting performance of butt jointing method is better than that of lapping method used in traditional jointing method with low temperature solder. The contact resistance is about 2 micro ohm in case of Bi2223 superconducting tape (4mm x 0.3mm cross section) under 90% of its crilical surrent. This value is small enough to design the remountable superconducting magnets. In case of the flvelayer laminated superconductina tape, the resistance is reduced to 1 micro ohm. The resistance, however, increases when the transport current exceeds 90A, whose value is much less than the critical current of the laminated superconducting tape. This is maybe due to the relatively smallcornpressive stress acting on the cross section and experimental extrapolated results requires about 100Mpa to achieve the desirable results.The numerical results show that the performance does not deaend on relative location of SC filaments in each tape, which means that the butt jointing method has large feasibility for the magnet of fusion reactors.

实验结果表明，在传统的低温钎焊焊接方法中，对接焊接方法的接触性能优于搭接焊接方法。在Bi_（2223）超导带材（4mm × 0.3mm截面）的90%临界电流下，接触电阻约为2微欧。该值小到足以设计可重装的超导磁体。在多层叠层超导带的情况下，电阻减小到1微欧姆。然而，当传输电流超过90A时，电阻增加，其值远小于层压超导带材的临界电流。这可能是由于横截面上的压应力较小，实验外推结果需要100Mpa左右才能达到理想的结果，数值计算结果表明，超导细丝在各带材中的相对位置并不影响其性能，这意味着这种对接方法对于聚变堆磁体具有很大的可行性。

项目成果

H.Hashizume et al.: "Advanced Fusion Reactor Design using Remountable HTc SC magnet"J.Plasma Fusion Res.SERIES. 5. (2002)

H.Hashizume 等人：“使用可拆卸 HTc SC 磁体的先进聚变反应堆设计”J.Plasma Fusion Res.SERIES。

Hidetoshi Hashizume, Satoshi Ito, Kenjiro Yagi, Sumio Kitajima: "Proposal of mechanically jointed superconducting magnet using high critical temperature superconductors"Fusion Engineering and Design. 63-64. 449-454 (2002)

Hidetoshi Hashizume、Satoshi Ito、Kenjiro Yagi、Sumio Kitajima：“使用高临界温度超导体的机械接合超导磁体的提案”聚变工程与设计。

HASHIZUME, Hidetoshi., USUI, Y., KITAJIMA, S., HIDA, Y., SAGARA, A.: "Numeical analysis of MHD flow in remountable first wall"Fusion Engineering and Design. 61-62. 251-254 (2002)

HASHIZUME, Hidetoshi., USUI, Y., KITAJIMA, S., HIDA, Y., SAGARA, A.：“可重新安装第一壁中 MHD 流动的数值分析”融合工程与设计。

Hidetoshi Hashizume, Y.Usui, S.Kitajima, Y.Hida, A.Sagara: "Numeilcal analysis of MHD flow in remountable first wall"Fusion Engineeiing and Design. 61-62. 251-254 (2002)

Hidetoshi Hashizume、Y.Usui、S.Kitajima、Y.Hida、A.Sagara：“可重新安装第一壁中 MHD 流动的数值分析”融合工程与设计。

Hidetoshi Hashizume, S.Kitajima, S.Ito, K.Yagi, Y.Usui: "Advanced Fusion Reactor Design using Remountable HT.SC Magnet"JPlasma Fusion Res.SBRIES. 5. 532-536 (2002)

Hidetoshi Hashizume、S.Kitajima、S.Ito、K.Yagi、Y.Usui：“使用可拆卸 HT.SC 磁铁的高级聚变反应堆设计”JPlasma Fusion Res.SBRIES。