Toroid Coil Magnetic Field Compression
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Solution Overview
Problem
Current technologies are limited in generating large-scale or high-strength magnetic fields beyond 1 Tesla, which are necessary for applications such as controlling high-energy electron or ion beams, as permanent magnets saturate at 1 Tesla and achieving higher strengths requires large superconducting coils.
Innovation Solution
The use of a toroid coil structure with multiple separate coils wound around it, where the coils are spaced uniformly or non-uniformly to compress the magnetic field, with a design that gradually decreases in size over a portion of the toroid, allowing for a highest magnetic flux density at the central region, and optionally using superconducting or diamagnetic materials to enhance field strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If permanent magnets are used to generate magnetic fields, then the device is simple and easy to manufacture, but the magnetic field strength is limited to about 1 Tesla due to saturation
Solution Approach 1:
The patent divides the coil system into multiple separate coils wound around a toroid structure, with each coil contributing to the overall magnetic field. This segmentation allows the system to achieve higher magnetic field strengths (10 T or higher) by combining the effects of multiple coils while maintaining manageable individual coil designs, resolving the contradiction between ease of manufacture and field strength.
Solution Approach 2:
The patent employs a nested structure where multiple coils are wound around a toroid form, with coils positioned at different locations along the toroid circumference. This nesting approach allows compact arrangement of multiple magnetic field-generating elements within a confined space, enabling high field strength achievement without proportionally increasing device complexity or manufacturing difficulty.
2Strength
If large coils wound with superconducting material are used to achieve magnetic field strengths of 10 T or higher, then the magnetic field strength is improved, but the device complexity and size increase significantly
Solution Approach 1:
The patent segments the superconducting coil system into multiple separate coils distributed around the toroid, rather than using a single large complex coil. Each individual coil can be designed and manufactured separately with standard superconducting materials, then assembled into the complete system. This segmentation reduces device complexity while achieving the required 10 T or higher magnetic field strength through cumulative effect.
Solution Approach 2:
The patent arranges multiple coils in a spatial distribution around the toroid circumference, utilizing the dimensional space efficiently. By positioning coils at different angular positions around the toroid, the system achieves high magnetic field strength in the central region without requiring each individual coil to be excessively large or complex, thus reducing overall device complexity.
3Strength
If multiple separate coils are wound around a toroid to compress the magnetic field, then the magnetic flux density is concentrated in the central region, but the device structure becomes more complex
Solution Approach 1:
The patent combines multiple separate coils around a common toroid structure, merging their magnetic field contributions to achieve concentrated magnetic flux density in the central region. The toroid serves as a unifying structural element that integrates the functions of multiple coils, allowing the system to achieve high magnetic flux density without proportionally increasing device complexity, as the toroid provides a shared framework for all coils.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables the generation of magnetic fields with strengths up to 10 Tesla or higher, suitable for applications like controlling electron beams or performing magnetic resonance imaging, by compressing the magnetic field within an aperture defined between coils, effectively addressing the limitations of existing technologies.
Implementation Method 1
each coil generates a magnetic field in response to electric current flowing in the coil
Implementation Method 2
The magnetic field is compressed or has a highest magnetic flux density proximate a central region of the coils around the toroid
Data Source
AI summary
An apparatus for magnetic field compression includes a toroid and a plurality of separate coils wound around the toroid. The coils are spaced about a circumference of the toroid and each coil generates a magnetic field in response to electric current flowing in the coil. The toroid and a group of the coils each include a size that respectively gradually decreases over a predetermined portion of the toroid. The magnetic field is compressed or has a highest magnetic flux density proximate a central region of the coils around the toroid.