Undulator Magnet Array Phase Shift Force Cancellation
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Solution Overview
Problem
The existing undulator magnet arrays face significant challenges due to the strong attractive forces between magnet arrays, requiring high rigidity and weight, which increases production and installation costs and complexity.
Innovation Solution
The undulator magnet array design involves shifting one magnet array relative to the other by a predetermined amount, allowing for the cancellation of magnetic forces in the magnet arrangement direction, reducing the overall magnetic forces acting on the arrays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If structural materials and driving mechanisms with extremely high rigidity are used to maintain adjustment accuracy under strong magnetic forces, then the gap between magnet arrays can be adjusted with micrometer accuracy, but the total weight exceeds ten tons
Solution Approach 1:
By segmenting the magnet arrays into periodic units with force-reducing phase shifts, the patent reduces the net magnetic force acting on the structures. This force reduction allows for the use of lighter structural materials and simpler driving mechanisms while still maintaining the required micrometer-level adjustment accuracy for the gap between magnet arrays.
2Strength
If a large number of components are used to distribute loads in the magnet arrays, then the structural integrity can be maintained under magnetic forces, but the structure becomes complex and requires high production and assembly accuracy
Solution Approach 1:
The patent segments the magnet arrays into periodic units that inherently distribute magnetic forces more evenly. This segmentation reduces the peak forces on individual components, allowing for simpler structural designs with fewer components. The periodic structure provides natural load distribution, reducing the need for complex reinforcement while maintaining structural integrity.
Solution Approach 2:
By changing the phase shift parameters between adjacent periods, the patent optimizes the force distribution pattern. This parameter optimization reduces the maximum forces that structures must withstand, allowing for simpler designs with fewer components and lower production and assembly accuracy requirements.
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 reduces the magnetic forces between the magnet arrays, decreasing the required rigidity and weight of the structural components, thereby simplifying the undulator structure and reducing manufacturing and installation costs.
Implementation Method 1
there is provided a pair of magnet arrays disposed parallel to and opposite each other to produce a periodic magnetic field
Implementation Method 2
by undulating electrons that travel between the pair of magnet arrays at a speed close to that of light, intense synchrotron radiation is generated
Implementation Method 3
the magnetization direction of magnets contained in the first magnet array and the magnetization direction of magnets contained in the second magnet array change, in the plane through the first and second magnet arrays, periodically along the magnet arrangement direction
Data Source
AI summary
In an undulator magnet array, an upper magnet array is formed by coupling an upper shift magnet array and an upper reference magnet array, and a lower magnet array is formed by coupling a lower reference magnet array and lower shift magnet array arranged so as to face the magnet arrays. With reference to a state where the amplitudes of periodic magnetic fields that can be formed by the upper magnet array and the lower magnet array are maximized, the upper shift magnet array is shifted ¼ of a period to the left as seen from the lower reference magnet array and the lower shift magnet array is shifted ¼ of a period to the left as seen from the upper reference magnet array.