The permanent magnet hypothesis: an intuitive approach to designing non-circular magnet arrays with high field homogeneity.

ABSTRACT: Does the Halbach magnetization rotation rule that is used for designing circular magnet arrays for achieving the best homogeneity hold also for an elliptical or other non-circular cross-section? In this article, it is shown that a new numerically optimized magnetization rotation rule can provide more than three orders of magnitude improvement in field homogeneity as compared to a Halbach configuration for elliptical systems. Further it is demonstrated that such optimized magnetization rules can be easily derived in an intuitive way by studying virtual permanent magnets of a similar cross-section as the desired magnet array. This is coined as a permanent magnet hypothesis. Finally, it is shown that the applicability of this technique is not limited to circular or elliptical systems but can be applied to any arbitrarily shaped cross-section.

SUBMITTER: Tewari S 

PROVIDER: S-EPMC9935622 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature