Standing Wave Accelerator Resonant Mode Switching
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Solution Overview
Problem
Conventional electron linear accelerators face limitations in adjusting output energy efficiently without increasing structural complexity or altering the electromagnetic field distribution, particularly in achieving a wide energy regulating range while maintaining capture efficiency and beam energy spectrum.
Innovation Solution
A method involving a microwave power source that generates and inputs microwaves with different frequencies to switch the accelerating tube between distinct resonant modes, such as the π/2 and 5π/14 or 9π/14 modes, allowing for energy adjustment by changing the frequency without modifying the accelerator structure, enabling operation at multiple energy levels like 100 keV and 6 MeV.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the field amplitude of the bunching section is kept substantially unchanged and the field amplitude or phase of the light velocity section is individually changed, then the energy regulating range is relatively large, but the structure of the microwave feed-in system or the accelerator is relatively complex
Solution Approach 1:
The patent changes the resonant mode parameters of the accelerating tube by adjusting microwave frequency, allowing the same physical structure to operate at different energy levels. This avoids the need for complex additional feed-in systems or energy switches while achieving large energy regulation range through parameter (frequency/mode) changes alone
Solution Approach 2:
The accelerating tube is designed to support multiple resonant modes (both bunching modes and light velocity modes) within its inherent structure. By operating in different resonant modes, the same tube structure achieves multiple functions: bunching at low energy and acceleration at high energy, eliminating the need for separate structures for different energy ranges
2Adaptability or versatility
If the output frequency of the microwave power source is adjusted, then the accelerating tube switches between different resonant modes to achieve energy adjustment, but the frequency regulating range of the microwave power source must cover both modes
Solution Approach 1:
The microwave power source frequency is adjusted to match different resonant frequencies of the accelerating tube, causing the tube to switch between resonant modes. This parameter change (frequency) directly controls the energy output level, enabling energy adjustment from hundreds of keV to several MeV using a single power source without additional complex regulation mechanisms
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 allows for a large energy regulating range without increasing complexity, enabling the accelerator to produce electron beams at various energy levels, including hundreds of keV and 6 MeV, by simply adjusting the microwave frequency, thus simplifying operation and maintaining a straightforward structure.
Implementation Method 1
controlling a microwave power source to generate and input microwave with different frequencies into the accelerating tube, so that the accelerating tube switches between different resonant modes
Implementation Method 2
The electron linear accelerator is a device which accelerates electrons under a microwave electromagnetic field so that the energy of the electrons is enhanced
Data Source
AI summary
The present disclosure discloses a method for controlling a standing wave accelerator and a system thereof. The method comprises: generating, by an electron gun, an electron beam; injecting the electron beam into an accelerating tube; and controlling a microwave power source to generate and input microwave with different frequencies into the accelerating tube, so that the accelerating tube switches between different resonant modes at a predetermined frequency to generate electron beams with corresponding energy. According to the above solution, it only needs to change the output frequency of the microwave power source in the process of adjusting energy, without making any change to the accelerating structure per se. Therefore, the method is easy to operate. In addition, the structure of the accelerating tube in the above system is simple, without adding a particular regulation apparatus.