Deflection Electromagnet Using Superconductor Flux Concentration
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Solution Overview
Problem
Existing deflection electromagnet devices face challenges in generating high magnetic fields without increasing the size of the vacuum duct and maintaining control over the beam orbit, as larger superconducting coils lead to non-uniform magnetic fields and induced currents disrupt the concentrated magnetic flux.
Innovation Solution
A deflection electromagnet device configuration featuring first and second coils with ferromagnetic materials and magnetic flux induction materials, where the induced current flows parallel to the charged particle beam path, using superconductors to concentrate and maintain the magnetic flux, preventing leakage and non-uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a large superconducting coil is used to generate a high magnetic field, then the magnetic field strength is improved, but the vacuum duct size increases
Solution Approach 1:
The patent places a magnetic flux induction material (superconductor) inside the coil's magnetic field region. The superconductor concentrates the magnetic flux generated by the coil, effectively nesting a flux-concentrating element within the electromagnetic field to achieve higher field strength without proportionally increasing the coil size or vacuum duct volume.
Solution Approach 2:
The patent changes the magnetic field distribution parameters by introducing a magnetic flux induction material with specific permeability properties. This material modifies the magnetic flux density distribution, concentrating the flux in the beam path region to achieve high magnetic field strength locally without requiring a uniformly large coil structure.
2Adaptability or versatility
If a hole is provided in magnetic flux induction materials for beam passage, then beam access is improved, but induced currents generate around the hole preventing magnetic flux leakage
Solution Approach 1:
The patent applies different properties to different regions of the magnetic flux induction material. The region with the hole (where the beam passes) has different magnetic flux induction characteristics compared to the surrounding material. This local differentiation allows the beam to pass through while managing the induced current effects in a controlled manner.
Solution Approach 2:
The patent utilizes the dynamic response of the superconductor to changing magnetic fields. When the coil is energized, the superconductor dynamically adjusts its flux induction properties, and the induced currents around the hole are managed as part of the overall magnetic field configuration rather than being treated as a static defect.
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 configuration enables the generation of high magnetic fields while preventing an increase in vacuum duct size and facilitating control over the beam orbit, ensuring uniformity and stability of the magnetic field.
Implementation Method 1
PTL 2 discloses a technique of generating a high magnetic field by disposing a cylindrical or hollow conical superconductor having a wide inlet and a narrow outlet in an air core of a superconducting coil of a magnetic flux concentration device, and passing the generated magnetic flux of a superconducting magnet through the hollow part and concentrating the same.
Implementation Method 2
an current induced by a magnetic flux generated by the first coil and the second coil flows in the superconductor in a direction parallel to the charged particle beam path
Data Source
AI summary
A deflection electromagnet device generates a high magnetic field without increasing the size of a vacuum duct to facilitate control over a beam orbit. Magnetic flux lines from a return pole pass through the vacuum duct of a high-temperature superconductor in a vacuum heat insulation container and the charged particle beam is thus deflected, thereby generating radiation. A three-pole magnetic field is formed on the beam orbit and the charged particle beam is thus deflected by individual magnetic fields, so that radiation can be generated while the charged particle beam returns to a coaxial orbit. Therefore, an increase in size of the vacuum duct can be prevented. A shielding current is dominant and the non-uniformity of the magnetic field in a z-axis direction is prevented by disposing the high-temperature superconductor having a crystal direction c-axis orthogonal to a horizontal plane in which the charged particle beam flows.