Magnetic Field Measurement with Nested Flux Transformer Coils
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Solution Overview
Problem
Existing magnetic measurement apparatuses face difficulties in effectively applying a magnetic field corresponding to a measurement target using a flux transformer due to geometrical configurations that obstruct the application of laser light, microwave, and static magnetic fields, making it challenging to arrange the magnetic resonance member, high-frequency generator, and magnet relative to the flux transformer's magnetic flux direction and securing space for laser light irradiation.
Innovation Solution
A magnetic field measurement apparatus and method that positions the magnetic resonance member within the hollow parts of the secondary coil of the flux transformer and magnet, allowing for the application of a measurement target magnetic field using a flux transformer, with a high-frequency generator applying microwave and a magnet providing a static magnetic field, while ensuring space for laser light irradiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a flux transformer is used to apply the measurement target magnetic field to the magnetic resonance member, then the magnetic field measurement capability is improved, but the geometrical configuration becomes complex and obstructs the application of laser light, microwave, and static magnetic field
Solution Approach 1:
The magnetic resonance member is positioned within the hollow part of the secondary coil of the flux transformer, nesting the resonance member inside the transformer structure. This allows the flux transformer to apply the measurement target magnetic field effectively while the hollow space accommodates the resonance member and allows passage of laser light and microwave without obstruction.
Solution Approach 2:
The patent arranges the magnetic resonance member, high-frequency generator, and magnet in a three-dimensional configuration around the flux transformer's magnetic flux direction. By utilizing spatial arrangement in multiple dimensions, the system achieves effective magnetic field application while maintaining clear paths for laser light irradiation and microwave application.
2Ease of operation
If the secondary coil of the flux transformer is arranged to avoid obstructing laser light and microwave application, then the ease of operation is improved, but the effectiveness of applying the measurement target magnetic field to the magnetic resonance member deteriorates
Solution Approach 1:
The magnetic resonance member is nested within the hollow part of the secondary coil, allowing the coil to maintain its magnetic field application effectiveness while the hollow space provides unobstructed paths for laser light and microwave. This nesting arrangement simultaneously achieves both goals without compromise.
3Ease of manufacture
If the magnetic resonance member is positioned to allow easy arrangement relative to the flux transformer's magnetic flux direction, then the ease of manufacture is improved, but the space for laser light irradiation may be compromised
Solution Approach 1:
The magnetic resonance member is positioned within the hollow part of the secondary coil, which provides both easy alignment with the magnetic flux direction and sufficient space for laser light irradiation. The hollow structure naturally accommodates the resonance member while maintaining open access for optical paths.
Solution Approach 2:
The system utilizes three-dimensional spatial arrangement where the magnetic resonance member is positioned in the hollow part of the secondary coil, allowing easy alignment with the magnetic flux direction while the surrounding hollow space provides adequate room for laser light irradiation from multiple directions.
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
Effectively applies the magnetic field corresponding to the measurement target, facilitates easy arrangement of the magnetic resonance member, high-frequency generator, and magnet relative to the flux transformer's magnetic flux direction, and secures space for laser light irradiation, enhancing sensitivity and measurement accuracy.
Implementation Method 1
a flux transformer that senses a measurement target magnetic field using a primary coil and applies an application magnetic field corresponding to the sensed measurement target magnetic field to the magnetic resonance member using a secondary coil
Implementation Method 2
a magnetic resonance member capable of an electron spin quantum operation using microwave
Implementation Method 3
a magnet that applies a static magnetic field to the magnetic resonance member
Implementation Method 4
A magnetic measurement apparatus performs magnetic measurement with ODMR (Optically Detected Magnetic Resonance) that uses electron spin resonance of a sensing member such as a diamond structure that includes a nitrogen and a lattice defect (an NV center: Nitrogen Vacancy Center)
Data Source
AI summary
A high-frequency magnetic field generator 2 applies microwave to a magnetic resonance member 1 capable of an electron spin quantum operation using the microwave. A magnet 3 applies a static magnetic field to the magnetic resonance member 1. An irradiating device 12 irradiates the magnetic resonance member 1 with light of a specific wavelength. A flux transformer 4 senses a measurement target magnetic field using a primary coil 4a and applies an application magnetic field corresponding to the sensed measurement target magnetic field to the magnetic resonance member 1 using a secondary coil 4b. Further, the magnetic resonance member 1 is arranged at a position in a hollow part of the secondary coil 4b of the flux transformer 4 and in a hollow part of the magnet 3.