A radiation protection system based on a non-magnetic moment strong magnetic array

Abstract

The application provides a radiation protection system based on a non-magnetic moment strong magnetic array. The system is a space radiation protection system, and can make magnetic domains in the material arrange or form a closed loop according to a certain magnetic freezing rule through fine magnetic circuit design, so as to magnetically lock the material in a certain area. Magnetic force lines are gathered on one side of the magnet, and weakened on the other side, so that a single-side strong magnetic field is obtained. Through a special arrangement and layout, a strong magnetic structure without a magnetic moment is realized. The strong magnetic array is attached around key components and devices of a spacecraft. On one hand, the strong magnetic array realizes strong magnetic shielding on high-energy particles under a specific energy threshold through comprehensive protection of the strong magnetic field and the mass. On the other hand, the strong magnetic array still has the non-magnetic moment characteristic, does not interfere with the satellite attitude control, and provides particle radiation protection.

Description

Technical Field

[0001] This invention relates to the field of space environment, and more specifically to the field of satellite on-orbit radiation protection technology. Background Technology

[0002] The radiation effects of high-energy charged particles or photons in the space environment on spacecraft can induce permanent malfunctions or temporary damage, including single-event effects, total dose effects, surface charge-discharge effects, displacement damage effects, and internal charging effects.

[0003] Currently, the most widely used on-orbit radiation protection technology is passive shielding, such as using metals and polymers as shielding materials. This method increases the interaction between high-energy particles and matter by increasing the mass and thickness of the material, thereby improving the shielding performance of high-energy particles. However, this shielding requires very high shielding quality and also increases the amount of secondary particles and X-rays generated by bremsstrahlung. Therefore, space radiation protection is increasingly focusing on another type of active shielding technology, such as electric field shielding and magnetic field shielding. These technologies use magnetic or electric fields to deflect charged particles away from the spacecraft, thereby achieving radiation protection. Among these, electric field shielding still faces significant challenges due to its high power consumption and other insurmountable problems, and is currently only applicable to space radiation protection designs for spacecraft residing on planetary surfaces. In recent years, there has been considerable research on active magnetic field shielding. This method deflects charged particles under the influence of the Lorentz force, drawing them away from the spacecraft and reducing the radiation dose to astronauts inside the spacecraft. However, this method requires a large-scale, strong magnetic field with a magnetic induction intensity of several terabytes. However, how to achieve an ultra-strong magnetic field while avoiding the influence of the strong magnetic field on the spacecraft, and how to prevent the strong magnetic field from being magnetically reconnected with the space background magnetic field, so as to avoid the impact of low-energy plasma on the spacecraft and the magnetic field construction, remains a huge challenge.

[0004] This invention addresses the development needs of on-orbit radiation protection technology for spacecraft and follows the trends and priorities of long lifespan and lightweight design for future commercial satellite platforms. It proposes a passive, non-magnetic moment, strong magnetic array-based modular radiation protection technology. Summary of the Invention

[0005] This invention proposes a radiation protection system based on a passive, non-magnetic moment strong magnetic array, which can solve the problems of high cost of mass shielding and platform impact of strong magnetic protection in existing technologies. It provides a simple, efficient, low-loss, low-cost, and side-effect-free space particle radiation protection solution for on-orbit spacecraft.

[0006] This invention is achieved through the following technical solution:

[0007] A radiation protection system based on a magnetic moment-free strong magnetic array includes several single-sided strong magnetic patches with a single-sided magnetic field. All the single-sided strong magnetic patches are arranged such that their magnetic moments cancel each other out, achieving an overall absence of magnetic moment.

[0008] Furthermore, it also includes a patch housing disposed outside the protected target, the patch housing being used to house the unilateral strong magnetic patch.

[0009] Furthermore, the magnetic domains inside the single-sided strong magnetic patch are arranged or formed into closed loops according to the magnetic freezing law. The effect is that magnetic lines of force converge on one side of the magnet and the magnetic lines of force are weakened on the other side, thereby obtaining a single-sided strong magnetic field structure.

[0010] Furthermore, the single-sided strong magnetic patch includes magnetic circuit designs of different shapes, such as typical linear or cylindrical shapes, where the linear shape is a rectangular thin sheet and the cylindrical shape is a circular thin sheet, which can be assembled and spliced ​​into any required protective device.

[0011] Furthermore, the internal magnetic field of the single-sided strong magnetic patch is not less than 1T, and the surface magnetic field is not less than 0.5T.

[0012] Furthermore, several single-sided strong magnetic patches with different magnetic moments and directions are arranged in a special array according to the principle of "mutual cancellation" to achieve a strong magnetic structure without magnetic moments.

[0013] Furthermore, the single-sided strong magnetic patch is a modular design, that is, a standardized shape patch design. On the one hand, multiple pieces can be combined to form a stronger three-dimensional protective structure. On the other hand, different arrangements and combinations can form any required protective shape, which can be quickly adapted to the application needs of different spacecraft.

[0014] The radiation protection system based on a passive, non-magnetic moment, high-strength magnetic array proposed in this invention has the following advantages:

[0015] (1) The present invention adopts a strong magnetic structure without magnetic moment, which can realize a relatively ideal unilateral strong magnetic field with an effect of Tesla-level strong magnetic field (inside the material). Based on this, a modular array arrangement design is adopted, which utilizes the ability of strong magnetic field to stop charged particles on the one hand, and the mass of the material itself to stop particles on the other hand, which can effectively shield the penetration ability of high-energy charged particles.

[0016] (2) The single-sided strong magnetic patch used in this invention may include more complex structures based on similar units, such as linear and cylindrical types.

[0017] (3) The magnetic moment-free strong magnetic array technology used in this invention achieves the overall magnetic moment-free characteristics through a special array layout, so that the magnetic field distribution state of the spacecraft is approximately reduced relative to the background geomagnetic field. On the basis of providing strong magnetic field, the magnetic moment-free effect is achieved, which does not interfere with the satellite attitude control.

[0018] (4) The magnetic moment-free strong magnetic array technology used in this invention can be modularly designed and is suitable for the application needs of different spacecraft, which can effectively reduce costs and increase the scope of use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the linear strong magnetic array device of the present invention; wherein, 1-5 are strong magnetic patches with different magnetic moment directions, and 6 is a magnetic field line.

[0020] Figure 2 This is a schematic diagram of a specific implementation of the radiation protection device of the non-magnetic moment strong magnetic array of the present invention; wherein, 1-is the radiation protection device or area to be protected, 2-strong magnetic array device, and 3-strong magnetic patch shell. Detailed Implementation

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments.

[0022] A radiation protection system based on a magnetic moment-free strong magnetic array is proposed. Through precise magnetic circuit design, the magnetic domains within the material are arranged in a specific pattern or form closed loops, effectively "locking" the material's magnetism within a defined region. Magnetic field lines are concentrated on one side of the magnet while weakened on the other, thus generating a strong magnetic field on one side. A special array layout achieves a magnetic moment-free strong magnetic structure. This strong magnetic array is then attached around key components and parts of spacecraft. On one hand, it provides strong magnetic shielding against high-energy particles below a specific energy threshold through a combination of strong magnetic field and mass protection; on the other hand, it maintains its magnetic moment-free characteristics, ensuring no interference with satellite attitude control and providing particle radiation protection.

[0023] Furthermore, the strong magnetic patch is made by using the change law of the internal magnetic domains and domain walls of ferromagnetic materials during the magnetization process. The internal magnetic field of the strong magnetic patch is not less than 1T, and the surface magnetic field is not less than 0.5T.

[0024] Furthermore, the non-magnetic-moment strong magnetic patch adopts a modular design, specifically including typical structures such as linear and cylindrical types, which can meet the protection needs of various products.

[0025] Furthermore, based on the arrangement of magnetic domains within the material and control requirements, and combined with the characteristics of various modular (linear and cylindrical) strong magnetic array configurations, the array magnetic circuit is precisely simulated and designed using specialized CST software. This yields the array arrangement rules and optimal combination, with an overall magnetic moment of less than 100 mA·m², thus realizing a strong magnetic array device without magnetic moment.

[0026] This embodiment provides a passive, non-magnetic moment, high-magnetic array radiation protection system, such as... Figure 2 As shown, it includes a satellite platform 1 to be protected, a single-sided strong magnetic patch 2, and a shell 3 for the strong magnetic patch.

[0027] The protective device satellite platform 1 is for key radiation protection areas or single units. The strong magnetic patch shell 3 is used for the installation of the strong magnetic array device. Multiple single-sided strong magnetic patches 2 form a strong magnetic array device. They are assembled in sequence according to the direction shown in the figure (as indicated by the arrow) to form a small closed strong magnetic circuit, which can be used to provide a single-sided strong magnetic environment and achieve the function of strong magnetic protection without magnetic moment. The magnetic field strength inside the material exceeds 0.5T.

[0028] like Figure 1 As shown, the strong magnetic array device 2 includes a specially arranged passive permanent magnet array 6-8 based on magnetic domain control, and a single-sided strong magnetic structure 9 that forms a single-sided strong magnetic patch 2.

[0029] Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this invention shall be included within the scope of protection of this invention.

Claims

1. A radiation protection system based on a non-magnetic moment strong magnetic array, characterized in that, It includes several unilateral strong magnetic patches with unilateral magnetic fields, and all the unilateral strong magnetic patches are arranged such that their magnetic moments cancel each other out, achieving an overall absence of magnetic moment; The magnetic domains inside the unilateral strong magnetic patch are arranged or formed into closed loops according to the magnetic freezing law. The effect is that magnetic lines of force converge on one side of the magnet and weaken magnetic lines of force on the other side, thereby obtaining a unilateral strong magnetic field structure. All the unilateral strong magnetic patches are arrayed according to the principle of mutual cancellation of magnetic moments, and the overall magnetic moment is less than 100 mA·m². The unilateral strong magnetic patch includes magnetic circuit designs of different shapes, including linear or cylindrical. The linear type is a rectangular thin sheet, and the cylindrical type is a circular thin sheet. Based on this, it can be assembled and spliced ​​into any required protective device. Several single-sided strong magnetic patches with different magnetic moments and directions are arranged in a special array to achieve a strong magnetic structure without magnetic moments by adopting the principle of "mutual cancellation".

2. The protection system according to claim 1, characterized in that, It also includes a patch housing disposed outside the protected target, the patch housing being used to house the unilateral strong magnetic patch.

3. The protection system according to claim 1, characterized in that, The internal magnetic field of the single-sided strong magnetic patch is not less than 1T, and the surface magnetic field is not less than 0.5T.

4. The protection system according to claim 1, characterized in that, The single-sided strong magnetic patch is a modular design, that is, a standardized shape patch design. On the one hand, multiple pieces can be combined to form a stronger three-dimensional protective structure. On the other hand, different arrangements and combinations can form any required protective shape, which can be quickly adapted to the application needs of different spacecraft.

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