Compact Deflecting Magnet With Rectangular Yoke
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Solution Overview
Problem
Existing beam-deflecting magnets for charged particle devices require complex coil arrangements to produce both dipole and quadrupole fields, making them cumbersome and limited in deflection angles.
Innovation Solution
A compact magnet design that uses a single coil set to generate both dipole and quadrupole fields, featuring a rectangular yoke shape with uniformly distributed coil windings, allowing for greater deflection angles and simplified assembly around a beam tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex magnetic coil arrangements are used to produce both dipole and quadrupole fields, then the magnetic field requirements are met, but the device complexity increases and deflection angle range is limited
Solution Approach 1:
The patent combines the functions of separate dipole and quadrupole coil arrangements into a single integrated coil structure. The coil windings are distributed around the rectangular yoke such that the same physical coils generate both dipole deflection fields and quadrupole focusing fields simultaneously, eliminating the need for separate coil assemblies and reducing overall device complexity while maintaining field requirements
Solution Approach 2:
The coil structure is designed to serve multiple functions: it generates dipole fields for beam deflection and quadrupole fields for beam focusing within the same physical assembly. This multi-functional design allows a single coil system to replace what would traditionally require separate specialized coil arrangements for each function
2Adaptability or versatility
If traditional beam-deflecting magnet designs are used, then the magnetic field components are produced, but the deflection angle range is limited and assembly is cumbersome
Solution Approach 1:
The magnet is divided into four separate yoke segments arranged in a rectangular configuration, each with its own coil windings. This segmentation allows the yoke to be assembled around the beam tube in a modular fashion, simplifying installation and maintenance while enabling the coil windings to be uniformly distributed across all segments for optimized field generation and extended deflection capabilities
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
The design reduces complexity, enables greater deflection angles, and maintains uniform magnetic fields, enhancing the performance of beam-deflecting and focusing capabilities in devices like cathode ray tubes and scanning electron microscopes.
Implementation Method 1
a coil set including a plurality of coils, wherein windings of the plurality of coils are uniformly distributed across and wound around the plurality of yokes, wherein the coil set is configured to produce both dipole and quadrupole fields
Implementation Method 2
the magnet is configured to deflect and focus electron and ion beams
Data Source
AI summary
A particle beam device including a magnet, the device including: a particle beam source configured to emit electron and ion beams; a plurality of yokes arranged in a substantially rectangular shape; a coil set including a plurality of coils, wherein windings of the plurality of coils are uniformly distributed across and wound around the plurality of yokes, wherein the coil set is configured to produce both dipole and quadrupole fields, wherein the magnet is configured to deflect and focus electron and ion beams.