• Corpus ID: 219303589

Designing Coils to Produce User-specified Magnetic Field Profiles Inside a Closed Finite-length High-Permeability Cylinder

  title={Designing Coils to Produce User-specified Magnetic Field Profiles Inside a Closed Finite-length High-Permeability Cylinder},
  author={M. Packer and P. J. Hobson and Niall Holmes and James Leggett and Paul Glover and Matthew J. Brookes and Richard Bowtell and T. Mark Fromhold},
  journal={arXiv: Applied Physics},
Commercially available passive magnetic shields with active components that allow the generation of a tailored low-field environment are required for many applications in science, engineering, and medical imaging. Until now, accurate field nulling, or field generation, has only been possible over a small fraction of the overall volume of the shield. This is due to the interaction between the active field-generating components and the surrounding high-permeability passive shielding material… 

Figures and Tables from this paper



Optimization of a Coil System for Generating Uniform Magnetic Fields inside a Cubic Magnetic Shield

Ultra-low magnetic fields have drawn lots of attention due to their important role in scientific and technological research. The combination of a magnetic shield and an active compensation coil is

Accurate Shim-Coil Design and Magnet-Field Profiling by a Power-Minimization-Matrix Method

Abstract The design of a single correction coil that annuls, with minimal power consumption, the field inhomogeneity associated with a specific magnet is described. The design strategy used is also

Two-Step Mirror Model for the Optimization of the Magnetic Field Generated by Coils Inside Magnetic Shielding

A partly analytical method for calculating the magnetic field generated by coils in a closed magnetic shield is presented. The field distortion caused by the high-permeability boundary is analyzed by

Magnetically Shielded Solenoid with Field of High Homogeneity

The theory, design, and construction of a magnetically shielded solenoid are described. Three correction coils are employed in addition to the main solenoid winding. The solenoid is enclosed in three

Minimizing magnetic fields for precision experiments

An increasing number of measurements in fundamental and applied physics rely on magnetically shielded environments with sub nano-Tesla residual magnetic fields. State of the art magnetically shielded

A Target Field Approach To Optimal Coil Design

Using a Fourier-Bessel expansion of the magnetic field generated by currents flowing on a cylinder, the relationship between current and field may be inverted. Hence the current density required to

Passive screening of switched magnetic field gradients

In NMR imaging the rapid switching of magnetic field gradients can induce currents in surrounding conductors, thus creating undesirable reflected fields which are spatially and temporally

Effectiveness of the magnetostatic shielding by the cylindrical shells

Analytic models of magnetically enclosed spherical and solenoidal coils