[FFA_CEBAF_Collab] nice review on Halbach arrays

[Jay Benesch]

https://arxiv.org/abs/2305.17227

Halbach Magnets for Magnetic Resonance
Peter Blümler, Helmut Soltner

    This review is a compilation of relevant concepts in designing Halbach multipoles for magnetic resonance applications. The main focus is on providing practical guidelines to plan, design and build such magnets. Therefore, analytical equations are presented for estimating the magnetic field from ideal to realistic systems. Various strategies of homogenizing magnetic fields are discussed together with concepts of opening such magnets without force, or combining them for variable fields. Temperature compensation and other practical aspects are also reviewed. For magnetic resonance two polarities (di- and quadrupole) are of main interest, but higher polarities are also included. 

Comments: 	37 pages, 17 Figures
Subjects: 	Instrumentation and Detectors (physics.ins-det)