Undulator Phase Tuning Using Mechanical Shims
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Solution Overview
Problem
Current undulator systems face challenges in achieving precise, compact, and cost-effective designs due to the complexity of tuning the magnetic field profile, which results in phase errors and reduced radiation output intensity.
Innovation Solution
A tunable undulator device utilizing mechanical and magnetic shims along the central axis to adjust the magnetic field profile, allowing for independent tuning of each shim to correct phase errors and maintain precise control over the magnetic field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional undulator systems use complex tuning mechanisms to adjust magnetic field profile, then phase error correction capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts the tuning function from complex mechanical mechanisms and implements it through simple shims that can be inserted or removed. The shim-based approach separates the tuning element (shim) from the main undulator structure, allowing independent adjustment without moving complex mechanisms. This resolves the contradiction by providing phase error correction capability through a simplified, static shim insertion method rather than complex dynamic tuning mechanisms.
Solution Approach 2:
The patent applies local quality by using individually adjustable shims at specific locations along the undulator where phase errors occur. Each shim can be independently tuned to correct local magnetic field deviations, allowing precise phase error correction only where needed rather than requiring complex global tuning mechanisms. This localized approach reduces overall device complexity while maintaining correction effectiveness.
2Device complexity
If undulator design aims for compact and cost-effective configuration, then device complexity is reduced, but tuning capability and phase error correction deteriorate
Solution Approach 1:
The patent segments the tuning function into multiple independent shims that can be individually adjusted along the undulator length. This segmentation allows compact design because each shim is a simple, small component rather than a large complex mechanism. The segmented shim approach maintains tuning capability by allowing independent adjustment of multiple locations, effectively providing adaptability through simple, distributed elements rather than complex centralized mechanisms.
3Ease of manufacture
If mechanical shims are used to tune magnetic field profile, then device design is simplified and costs reduced, but tuning precision and phase error correction effectiveness may be limited
Solution Approach 1:
The patent applies preliminary action by pre-calculating and pre-positioning shims with specific thicknesses and locations before undulator operation. The shim parameters (thickness, material, position) are determined in advance based on measured phase errors, allowing precise magnetic field profile adjustment without requiring complex real-time tuning mechanisms. This preliminary configuration approach achieves high precision through careful upfront design rather than complex adaptive 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
The use of mechanical and magnetic shims enables the correction of phase errors, resulting in higher output intensity and coherence of the radiation, while also simplifying the device design and reducing costs.
Implementation Method 1
a magnetic field in a gap between the first magnet array and the second magnet array
Implementation Method 2
As the electron 102 travels from one magnetic field to the next through the undulator device 100, the periodic reversing or switching of the magnetic field direction causes the trajectory of the electron 102 to oscillate or undulate
Data Source
AI summary
Employing undulator devices as x-ray radiation sources requires high magnetic field strength and precision for generating high intensity, high coherence radiation. A magnetic field tunable undulator device is described. The undulator device includes a first magnet array disposed along a central axis of the undulator device, and a second magnet array disposed along the central axis, opposite the first magnetic array, across a gap distance. First and second structural keepers are respectively coupled to the first and second magnetic arrays to support positions of the first and second magnet arrays. A plurality of tuning elements are (i) disposed along the central axis, (ii) physically coupled to at least one of the first magnet array or the second magnet array, and (iii) configured to tune the magnetic field profile along the central axis between the first magnet array and the second magnet array.