Feasibility Study of a MgB2 Superconducting Magnetic Cloak

被引：7
|
作者：
Giunchi, Giovanni [1 ]
Turrioni, Daniele [2 ]
Kashikhin, Vladimir [2 ]
Hogan Nguyen [2 ]
Barzi, Emanuela [2 ]
机构：
[1] Via Teodosio 8, I-20131 Milan, Italy
[2] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2016年 / 26卷 / 03期
关键词：
Infiltration process; magnetic cloaking; magnetic shielding; MgB2; mixture permeability; TUBES;
D O I：
10.1109/TASC.2016.2539261
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：
The magnetic shielding capability of bulk MgB2 hollow cylinders can be fruitfully combined with an external paramagnetic sheath, to tailor the shape of the external magnetic flux lines. By appropriate selection of the external sheath permeability and thickness, it is possible to leave the magnetic flux lines unaltered by the shield (cloaking effect). Preliminary measurements have been performed at 4.2 K on shielding capability of bulk cylinders, which are subjected to axial and transversal magnetic fields up to 5 T. The cloaking conditions have been modeled to find the optimized thickness to realize the cloaking effect. The MgB2 material of the superconducting shield is also optimized to avoid low-temperature flux jumps, without losing its shielding capability.
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页数：5
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