A spliced high-temperature superconducting magnetic shielding device and a combined device

Through the combination of spliced high-temperature superconducting magnetic shielding device and soft magnetic material, the magnetic noise problem of soft magnetic material magnetic shielding device is solved, and the magnetic shielding performance and sensitivity of extremely weak magnetic field measurement are achieved. It is suitable for quantum precision measurement and industrial applications.

CN120035114BActive Publication Date: 2025-07-25BEIHANG UNIV
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Patent Information

Application Number
CN202510510788.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-04-23
Publication Date
2025-07-25
Estimated Expiration
2045-04-23

AI Technical Summary

Technical Problem

The existing magnetic shielding devices made of soft magnetic materials cannot effectively reduce the magnetic noise generated by themselves, limiting the improvement of magnetic shielding performance, and traditional superconducting magnetic shielding is limited by large-size processes and low-temperature working conditions that cannot pass through light.

Method used

A spliced high-temperature superconducting magnetic shielding device is used to splice superconducting blocks made of sintered high-temperature superconducting powder. The adjacent blocks are filled with superconducting powder and the gap is closed with superconducting strips. Combined with a low-temperature cycle refrigeration system and a soft magnetic material magnetic shielding device, a combined magnetic shielding system is formed.

Benefits of technology

Significantly reduces magnetic noise by 1-3 orders of magnitude, creates a zero magnetic environment, and improves the sensitivity of extremely weak magnetic field measurement devices, suitable for quantum precision measurement and industrial applications.

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Abstract

A spliced high-temperature superconducting magnetic shielding device and a combined device, which at least solve the problem of self-generated magnetic noise that cannot be solved by a magnetic shielding device made of soft magnetic materials. After combining with the spliced superconducting magnetic shielding, the residual magnetism or magnetic noise can be reduced by at least 1-3 orders of magnitude. It is characterized in that it includes a spliced magnetic shielding barrel formed by splicing and enclosing several blocks. The blocks are superconducting blocks sintered from high-temperature superconducting powder. Superconducting powder is filled in the splicing seams between adjacent blocks, and the splicing seams between adjacent blocks are sealed with superconducting tape. High-temperature superconductivity means that the liquid nitrogen temperature at which the superconducting phenomenon occurs is ≥77K.
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