Feasibility Study of a MgB2 Superconducting Magnetic Cloak

The magnetic shielding capability of bulk MgB 2 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...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2016-04, Vol.26 (3), p.1-5
Main Authors: Giunchi, Giovanni, Turrioni, Daniele, Kashikhin, Vladimir, Nguyen, Hogan, Barzi, Emanuela
Format: Article
Language:English
Subjects:
Boron
infiltration process
magnetic cloaking
Magnetic fields
Magnetic flux
Magnetic noise
Magnetic shielding
MgB2
mixture permeability
PARTICLE ACCELERATORS
Permeability
Superconducting magnets
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Summary:The magnetic shielding capability of bulk MgB 2 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 MgB 2 material of the superconducting shield is also optimized to avoid low-temperature flux jumps, without losing its shielding capability.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2016.2539261