Variable Energy Accelerator Beam Orbit Stabilization
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Solution Overview
Problem
Variable energy accelerators face challenges in maintaining stable orbital movement due to magnetic field gradients, leading to dense and sparse regions where beam orbits converge or diverge, affecting the amount of beams that can be produced.
Innovation Solution
A variable energy accelerator design with a radiofrequency electric field in an isochronous magnetic field, featuring a radial magnetic field gradient in dense regions and a product of magnetic field gradient and beam size that is smaller than the magnetic field gradient, to stabilize beam orbits and increase beam production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a radiofrequency electric field is used to accelerate ions in an isochronous magnetic field, then beam energy can be increased and extracted, but magnetic field gradient disturbances cause unstable orbital movement and reduce beam amount
Solution Approach 1:
The patent applies local quality by creating distinct magnetic field gradient characteristics in different spatial regions. Specifically, the dense region has a magnetic field gradient configured to counteract orbit convergence, while the sparse region has different gradient characteristics to prevent excessive orbit divergence. This localized differentiation of magnetic field properties stabilizes beam orbits throughout the acceleration cycle.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting the magnetic field gradient parameters in response to beam energy increases. As the beam accelerates and orbits shift from the dense region to the sparse region, the magnetic field gradient parameters are modified to maintain optimal orbital stability at each energy level, preventing beam loss throughout the acceleration process.
2Power
If beam acceleration increases, then beam energy increases, but orbits become eccentric and densely located in one direction, creating dense and sparse regions that destabilize beam movement
Solution Approach 1:
The patent addresses orbit distribution instability by implementing local quality differences in the magnetic field gradient across the acceleration region. The dense region and sparse region are equipped with differentiated magnetic field gradient parameters that locally compensate for orbit convergence and divergence, respectively. This ensures uniform orbit distribution is maintained despite increasing beam energy and eccentricity.
3Reliability
If magnetic field gradient is increased to control beam orbits, then orbital stability improves, but variations in convergent force increase, affecting beam production amount
Solution Approach 1:
The patent resolves the contradiction between orbital stability and beam production by applying local quality to the magnetic field gradient distribution. Rather than using a uniform high gradient throughout, the system implements region-specific gradient parameters: the dense region uses one gradient configuration to maintain stability, while the sparse region uses another to optimize beam flow. This localized approach maintains stability without excessively reducing beam production capacity.
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 design enhances beam stability and production capacity by reducing variations in convergent forces and betatron oscillations, allowing for a larger amount of beams to be produced with controlled energy extraction.
Implementation Method 1
using a radiofrequency electric field to accelerate an ion beam which orbits in a magnetic field
Implementation Method 2
an isochronous magnetic field in which the orbit time is unchanged for energy
Implementation Method 3
a magnetic field gradient in a radial direction of a beam orbit in the dense region
Data Source
AI summary
Conventional cyclotrons have been incapable of changing energy of a beam to be extracted. Conventional synchrotrons have been difficult to output beams in a continuous manner. An accelerator has a dense region dense region in which orbits of different energies densely gather as a result of using a radiofrequency electric field to accelerate an ion orbiting in an isochronous magnetic field in order to cause a beam orbit to be displaced in a specific direction with increasing acceleration, and a sparse region in which orbits of different energies are sparsely discrete from each other. The accelerator has a feature that a magnetic field has a magnetic field gradient in a radial direction of a beam orbit in the dense region, and a product of a gradient of magnetic field gradient and a beam size passing through the dense region becomes smaller than the magnetic field gradient.