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High-performance shim coil design and engineering optimization for use in an extremely high field superconducting
Yijie Zheng1,2, Yaohui Wang1,2, Feng Liu3
1Division of Superconducting Magnet Science and Technology, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China.
The Review of Scientific Instruments
|December 11, 2023
Summary
A new shim coil design for 27 T magnets improves imaging quality and substance analysis. This novel pattern enhances fidelity and reduces power consumption for extremely high field applications.
Area of Science:
- Magnetic Resonance Imaging
- Superconducting Magnet Technology
- Coil Design
Background:
- Extremely high magnetic fields offer superior imaging quality and detailed substance analysis.
- Advanced shim techniques are crucial for realizing the full potential of these high fields.
Purpose of the Study:
- To propose a novel shim coil structural design pattern for 27 T extremely high field superconducting magnets.
- To optimize the shim coil pattern and engineering processing for enhanced performance.
Main Methods:
- Designed and optimized a shim coil pattern based on stream function contours.
- Utilized stream function contours as the centerline with a controlled wire spacing of 1 mm.
- Compared the performance of the novel design against alternative winding schemes.
Main Results:
- The novel shim coil design demonstrated improved performance compared to existing methods.
- Achieved higher fidelity in magnetic field shimming.
- Resulted in lower power dissipation.
Conclusions:
- The proposed novel shim coil design is effective for 27 T superconducting magnets.
- This design enhances imaging quality and analytical capabilities in extremely high field applications.
- Offers a more efficient and higher-fidelity solution for magnetic field control.
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