Split Waveguide Linear Accelerator for Compact X-Ray Sources
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Solution Overview
Problem
Conventional particle accelerators are bulky, costly, and require extensive tuning and assembly, limiting their efficiency and compactness, especially at high frequencies needed for portable X-ray sources, and pose risks due to the use of radioactive isotopes.
Innovation Solution
The development of a split linear accelerator design that uses micromachining to create compact, high-frequency accelerating structures from two milled halves of metal, reducing the number of components and eliminating the need for extensive tuning, and utilizing RF power sources like Ku-band magnetrons to achieve high-energy electron beams and X-ray production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional particle accelerators are used, then radiation can be generated, but the systems are bulky and have limited portability
Solution Approach 1:
The waveguide is divided into multiple cell portions that can be separately manufactured and then assembled together. This segmentation allows for compact design while maintaining the functionality of the complete accelerator structure, directly addressing the volume reduction goal without sacrificing operational capability
Solution Approach 2:
The patent transitions from conventional three-dimensional bulky accelerator designs to a more compact configuration by reimagining the waveguide structure in terms of stacked or folded dimensional arrangements, reducing the overall footprint while preserving the acceleration path
2Ease of manufacture
If conventional particle accelerators are used, then radiation can be generated, but the systems are costly and require extensive manufacturing resources
Solution Approach 1:
Dividing the waveguide into multiple cell portions enables each segment to be manufactured independently using standard machining processes, reducing the need for expensive custom fabrication while ensuring consistent performance through modular assembly
Solution Approach 2:
The patent employs standard machining parameters and conventional materials that are readily available and cost-effective, while maintaining the electromagnetic field characteristics necessary for reliable particle acceleration through careful design of the cell geometry and dimensions
3Productivity
If conventional particle accelerators are used, then radiation can be generated, but extensive tuning and assembly are required
Solution Approach 1:
The modular cell portions are designed with standardized interfaces and features that facilitate rapid assembly without requiring complex tuning procedures, directly improving productivity while maintaining manufacturing precision through repeatable manufacturing processes
Solution Approach 2:
The cell portions are pre-manufactured with precise geometric features and mounting interfaces before assembly, eliminating the need for extensive field tuning and reducing both assembly time and precision requirements during final integration
4Volume of moving object
If compact accelerator designs are implemented, then portability is improved, but the frequency requirements become more challenging to meet
Solution Approach 1:
The patent achieves compact size at high frequencies by carefully controlling the dimensional parameters of the cell portions, including the size and positioning of apertures and waveguide sections, to maintain the required electromagnetic resonance characteristics at reduced physical scales
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 results in a cost-effective, compact, and portable X-ray source capable of competing with radioisotope sources in terms of energy and size, while reducing the risks associated with radioactive materials and simplifying manufacturing and tuning processes.
Implementation Method 1
utilizing RF power sources like Ku-band magnetrons to achieve high-energy electron beams
Implementation Method 2
a plurality of accelerating cells configured to accelerate a beam of charged particles to a velocity between 0.1 and 1.0 times the speed of light
Data Source
AI summary
A particle accelerator can include a first waveguide portion and a second waveguide portion. The first waveguide portion can include a first plurality of cell portions and a first iris portion that is disposed between two of the first plurality of cell portions. The first iris portion can include a first portion of an aperture such that the aperture is configured to be disposed about a beam axis. The first waveguide portion can further include a first bonding surface. The second waveguide portion can include a second plurality of cell portions and a second iris portion that is disposed between two of the second plurality of cell portions. The second iris portion can include a second portion of the aperture. The second waveguide portion can include a second bonding surface.