Permanent Multipole Magnets with Adjustable Strength

Multipole shimming of permanent magnets using harmonic corrector rings.

Shimming systems are required to provide sufficient field homogeneity for high resolution nuclear magnetic resonance (NMR). In certain specialized applications, such as rotating-field NMR and mobile ex situ NMR, permanent magnet-based shimming systems can provide considerable advantages. We present a simple two-dimensional shimming method based on harmonic corrector rings which can provide arbi...

Conceptual Design of a Permanent Quadrupole Magnet with Adjustable Strength

The conceptual design of a quadrupole magnet is de scribed that uses both permanent magnet material and soft iron. The quadrupole gradient can be adjusted without a ecting the field distribution, and the basic design principle can be used to build dipole and other multi pole magnets.

Numerical simulation for optimization of multipole permanent magnets of multicusp ion source

A new ion source will be designed and manufactured for the CYCLONE30 commercial cyclotron with a much advanced performance compared with the previous one. The newly designed ion source has more plasma density, which is designed to deliver an H beam at 30 keV. In this paper numerical simulation of the magnetic flux density from permanent magnet used for a multicusp ion source, plasma confinement...

Method of making permanent magnets

User Manual: Permanent Magnets Electric Motors