Thin-Shell Formulation Applied to Superconducting Shields for Magnetic Field Mitigation

Author

Chiampi, Mario ; Gozzelino, L. ; Manzin, Alessandra ; Zilberti, Luca

Author_Institution

Dipt. di Ing. Elettr., Politec. di Torino, Torino, Italy

Volume

47

Issue

10

fYear

2011

Firstpage

4266

Lastpage

4269

Abstract

The thin-shell formulation is applied to a combined finite element-boundary element technique to study the magnetic shielding efficiency of superconducting layers and hybrid superconducting-ferromagnetic sandwich structures in 3-D domains. The behavior of the superconducting material, assumed to be in a Meissner-like state, is here described by the London model. The numerical simulations are validated by comparison with the experimental results obtained for magnesium diboride (MgB₂) samples having different shapes (i.e., disk, cup) and immersed in uniform low dc magnetic fields.

Keywords

Meissner effect; boundary-elements methods; ferromagnetic materials; finite element analysis; magnesium compounds; magnetic shielding; sandwich structures; shells (structures); type II superconductors; 3D domains; London model; Meissner-like state; MgB₂; finite element-boundary element method; magnesium diboride; magnetic field mitigation; numerical simulations; superconducting shields; superconducting-ferromagnetic sandwich structures; thin-shell formulation; Magnetic multilayers; Magnetic noise; Magnetic resonance imaging; Magnetic shielding; Numerical models; Superconducting epitaxial layers; Superconducting magnets; Magnetic shielding; numerical models; superconducting materials; thin-shell formulation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2011.2143699

Filename

6028071