Superconducting Magnet System for High-Power Terahertz Sources
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Solution Overview
Problem
Conventional strong-magnetic focusing magnet systems for high-power terahertz sources suffer from low magnetic field intensity, poor field stability, and unsatisfied field precision, which are inadequate for the complex magnetic field requirements of high-power terahertz systems.
Innovation Solution
A strong-magnetic focusing magnet system comprising two superconducting main coils, four superconducting correction coils, and two cathode magnetic field compensation coils, using Nb3Sn and NbTi superconducting wires with distributed solid cold-guide Litz wires and microfluidic heat exchangers, and doped with rare earth materials for improved stability and precision, is developed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional electromagnetic fields with lower magnetic field intensities are adopted, then the system is simpler and easier to manufacture, but the magnetic field intensity is insufficient for high-power THz sources
Solution Approach 1:
The magnet system is divided into multiple superconducting coils (main coils, correction coils, and compensation coils) that work together to generate the required magnetic field. This segmentation allows each coil to contribute to specific regions of the magnetic field, achieving high intensity while maintaining controllability
Solution Approach 2:
The patent employs superconducting materials (such as Nb3Sn and NbTi) that combine exceptional magnetic field generation capabilities with zero electrical resistance. This composite material approach enables high magnetic field intensity without the energy losses that would otherwise require simpler, conventional electromagnetic designs
2Measurement precision
If conventional strong-magnetic focusing magnet systems are used, then the system structure is simpler, but the field stability and precision are poor
Solution Approach 1:
Different types of coils are assigned to different spatial regions and functional requirements: main coils for overall field generation, correction coils for precision adjustment in specific zones, and compensation coils for stabilizing particular field regions. This local differentiation achieves high precision without requiring uniform complexity throughout the entire system
Solution Approach 2:
The magnet system incorporates feedback mechanisms where the magnetic field is continuously monitored and adjusted by the correction and compensation coils based on measured deviations. This closed-loop control achieves high field precision and stability while managing the complexity through intelligent control algorithms
3Temperature
If conventional magnet systems are adopted, then the system is lighter and more movable, but the thermal management and temperature uniformity are insufficient
Solution Approach 1:
The patent employs liquid helium cryogenic cooling systems with sophisticated fluid dynamics control to achieve uniform temperature distribution across the superconducting coils. The hydraulic cooling network delivers cryogenic fluid through channels designed to ensure equal heat removal from all coil regions, maintaining temperature uniformity despite the added thermal management complexity
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 system achieves enhanced magnetic field intensity, stability, and precision, supporting high-power terahertz sources with improved temperature uniformity and thermal management, suitable for complex environments and applications like aerospace and airborne systems.
Implementation Method 1
two superconducting main coils, four superconducting correction coils, and two cathode magnetic field compensation superconducting coils
Implementation Method 2
distributed solid cold-guide Litz wires, a plurality of microfluidic heat exchanger are wound around the surface of each superconducting coil
Data Source
AI summary
A strong-magnetic focused magnet system with a terahertz source includes a first superconducting main coil and a second superconducting main coil. The second superconducting main coil surrounds the outer surface of the first superconducting main coil, and the second superconducting main coil is coaxial with the first superconducting main coil.