Active compensation of magnetic field distortions based on vector spherical harmonics field description

作者：Wyszynski G^*; Bodek K^*; Afach S; Bison G; Chowdhuri Z; Daum M; Franke B; Komposch S; Lauss B; Ries D; Zsigmond G; Perkowski M; Rozpedzik D; Zejma J; Fertl M; Koss P A; Severijns N; Wursten E; Kirch K; Kozela A; Quemener G; Schnabel A

来源：AIP Advances, 2017, 7(3): 035216.

DOI：10.1063/1.4978394

An analytic solution to the magnetostatic inverse problem in the framework of vector spherical harmonic basis functions is presented. This formalism is used for the design of a spherical magnetic field compensation system and its performance is compared with an already existing rectangular coil system. The proposed set of spherical coils with 15 degrees of freedom achieves a shielding factor of 1000 or better in a large part of the volume enclosed by the coils for a dipolar type external perturbation.

• 出版日期2017-3
• 单位KU Leuven