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Halbach Array

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Halbach Arrays - Permanent Magnet Assemblies for High-Tech Applications

Halbach Array with Hexapole Magnets

A Halbach Array is a magnetic array that produces a high magnetic field utilizing permanent magnets, arranged with a spatially rotating magnetic field vector which has the effect of focusing and augmenting the magnetic field on one side, while cancelling it out on the other. Halbach Arrays are able to achieve very high and uniform flux densities without necessitating any power input or cooling, which an electromagnet would require.

For over 25 years, Integrated Magnetics has been an industry leading custom manufacturer of permanent magnet Halbach Arrays for industrial and technical applications. We specialize in the technical design, engineering and manufacturing of multi-segmented, circular and linear (planar) Halbach arrays and Halbach-type magnetic assemblies, providing multiple pole configurations with high-field concentrations and high-uniformity.

Halbach Cylinder - Circular Halbach Arrays

Halbach Array with Hexapole Magnets

A Halbach cylinder is a circular Halbach array consisting of several trapezoidal or arc-shaped magnet segments with magnetic orientation vectors that rotate in order to focus the field. They are routinely built in quadrupole, hexapole, sextupole, octupole and other magnet configurations. Generally, the larger the number of discrete magnets with a corresponding number of magnetic vector angles, the more uniform the field across the inside diameter of the Halbach assembly.

Halbach cylinders are used in NMR devices, sophisticated high-torque motors, beam focusing, research and magnetic particle separation equipment for industrial, life science, R & D and medical applications.

Linear (Planar) Halbach Array

Linear Halbach arrays consist of discrete, rectangular permanent magnets mounted on a ferromagnetic backplate with varying magnetic orientations that serve to focus the field on one side of the array, producing a uniform and powerful semi-sinusoidal magnetic field. Linear (planar) arrays can also be used in a yoke configuration to produce a very powerful sinusoidal field in the gap.

We produce various types of linear (planar) Halbach arrays which are used in particle accelerators, free-electron lasers, extremely powerful linear motors and more for industrial, life science, R & D and medical applications.

Linear Halbach Array Assembly for Maglev Train
  • Specialty Project: Under Contract from General Atomics, Integrated Magnetics is proud to have built the linear Halbach components for a Maglev demonstration train, based on the Inductrack design which was developed by Lawrence Livermore National Laboratory under the guidance of the late Dr. Richard Post. We have also build linear Halbach array assemblies for a number of high-speed Hyperloop projects.

Halbach-Type Magnetic Assembies

Halbach Type Magnetic Assembly for Catheter Navigation

In addition to linear and cylindrical Halbach Arrays, we custom design and build multi-level, Halbach type magnetic assemblies in multipole configurations with variable magnetic orientation patterns for industrial, scientific and medical applications. These complex assemblies produce extremely high magnetic field concentrations and high-uniformity.‚Äč

  • Specialty Project: On a production basis, we custom engineered and built a Halbach-type, high-field gradient magnetic assembly, designed to produce a strong and focused field for a robotic catheter navigation application. This complex magnet consisted of several hundred discrete magnets with multiple magnetic orientations. The final assembly weighed over 800 lbs.

Your Magnetic Halbach Array Project - How Can We Help?

Custom Engineered Magnetic Solutions

Working with an experienced magnet engineering and manufacturing team is essential for successfully producing these complex assemblies. Integrated Magnetics has developed a wealth of experience and expertise in this specialty arena. Contact us today or send us a Request for Quote about your specialty project and let us know how we can help.

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