HTS Magnet System Winding Scheme for Synchrotron Insertion Devices
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Solution Overview
Problem
Current superconducting insertion devices for synchrotron radiation sources face challenges with complex winding processes and cooling requirements, which can lead to heat management issues and safety concerns due to the need for cryogenic temperatures.
Innovation Solution
A high-temperature superconductor (HTS) magnet system using HTS conductive tape with a novel winding scheme and coaxial pole arrangement, allowing for simpler winding and reduced heat input, as the HTS tape becomes superconducting at liquid nitrogen temperatures, enabling increased performance and safety margins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If low-temperature superconductor (LTS) coils are used to generate high magnetic fields, then magnetic field strength is improved, but cooling complexity and heat management become worsened due to cryogenic temperature requirements
Solution Approach 1:
The patent changes the temperature parameter from cryogenic (4.2K for LTS) to higher temperature (20-77K for HTS), enabling the use of simpler cooling systems while maintaining superconducting properties and high magnetic field generation capability
Solution Approach 2:
The patent replaces expensive and complex cryogenic cooling infrastructure with more accessible and simpler cooling methods that can operate at higher temperatures, reducing overall system complexity and cost
2Loss of energy
If continuous winding of coils is performed to avoid interruptions, then heat generation is reduced, but winding process complexity increases due to directional changes required
Solution Approach 1:
The patent divides the coil winding into separate segments that can be wound in consistent directions, then connects them using specialized joints, simplifying the winding process while managing heat generation through controlled interruption points
Solution Approach 2:
The patent introduces intermediate connection structures that join coil segments, allowing for simpler winding processes while maintaining electrical continuity and managing thermal characteristics through the connection design
3Temperature
If HTS conductive tape is used instead of LTS wire, then operating temperature is improved (higher temperature operation), but winding flexibility becomes worsened due to tape geometry constraints
Solution Approach 1:
The patent segments the HTS tape into manageable sections with standardized connection points, allowing for easier handling and assembly while maintaining the high-temperature operating advantages of HTS material
Solution Approach 2:
The patent transitions from traditional wire-based three-dimensional winding to tape-based planar or layered configurations, fundamentally changing the dimensional approach to coil construction to accommodate HTS tape geometry
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 HTS magnet system simplifies the winding process, reduces cooling complexity, and operates effectively at higher temperatures, enhancing magnetic field generation and heat management, thus improving the operational safety and efficiency of insertion devices.
Implementation Method 1
the HTS tape becomes superconducting at liquid nitrogen temperatures
Implementation Method 2
These devices generate a periodically alternating magnetic field on the beam axis
Implementation Method 3
this field configuration forces them to follow an oscillating trajectory
Implementation Method 4
As the electrons pass through the field, this field configuration forces them to follow an oscillating trajectory, thus emitting synchrotron radiation
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a high-temperature superconductor (HTS) magnet system, preferably for an insertion device for producing high-intensity synchrotron radiation, comprising the coil body (6), on the outer surface of which poles having windings lying therebetween are arranged, wherein at least one high-temperature superconducting strip (23) is wound in one direction on the coil body (6) and adjacent winding packages (13) or winding sections are electrically connected to each other in such a way that the current flows in the opposite direction. The solution according to the invention has the advantage of a simplified winding process, wherein optionally individual coil pairs can be replaced due to the modular arrangement. The scheme can be applied to any possible configuration of an insertion device and therefore is also suitable for use in free-electron lasers and other light sources on the basis of particle accelerators. Furthermore, the expensive cooling is unnecessary, so safety problems due to a lack of cooling cannot occur.