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Variable magnet arrays to passively shim compact permanent-yoke magnets
Till Überrück1, Bernhard Blümich1
1RWTH Aachen University, Institut für Technische und Makromolekulare Chemie, Worringerweg 2, 52074 Aachen, Germany.
Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|December 12, 2018
Summary
This study introduces adjustable magnet elements for C-shaped dipole magnets, enabling passive shimming. This new method corrects magnetic field profiles without extra components.
Area of Science:
- Physics
- Materials Science
- Engineering
Background:
- C-shaped permanent magnets provide a balance between accessibility and magnetic field performance.
- Existing methods for shimming C-shaped magnets can be complex or require additional parts.
Purpose of the Study:
- To present a novel approach for passively shimming C-shaped dipole magnets.
- To improve magnetic field homogeneity and correct field profiles in C-shaped magnet designs.
Main Methods:
- Designing C-shaped magnet poles using adjustable magnet elements.
- Developing two distinct pole concepts for passive shimming.
- Implementing a method that integrates shimming into the magnet pole structure.
Main Results:
- Demonstrated a passive shimming technique for C-shaped dipole magnets.
- Showcased adjustable magnet elements that allow for field profile correction.
- Eliminated the need for separate pole shoes or shim pieces.
Conclusions:
- The presented method offers an effective way to passively shim C-shaped permanent magnets.
- Adjustable magnet elements provide a versatile solution for optimizing magnetic field homogeneity.
- This innovation simplifies C-shaped magnet design and enhances performance.
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