A Charged Particle Shielding Device for Space Optical Detector Based on Electromagnetic Composite Field

Abstract

The invention proposes a charged particle shielding device for a space optical detector based on an electromagnetic compound field, which includes an electric field and magnetic field generating device, a leakage electromagnetic shielding device, a charged particle internal absorption and anti-scattering device, and a lens barrel support structure. The electric field generating device generates a deflection electric field parallel to the axis of the device and opposite to the incident direction of the charged particles, the magnetic field generating device generates a deflection magnetic field perpendicular to the direction of the deflection electric field, the electric field generating device and the magnetic field generating device work together to generate a deflection electromagnetic composite field, The leakage electromagnetic shielding device confines the deflection electromagnetic composite field in the charged particle shielding device, the charged particle internal absorption and anti-scattering device can absorb the charged particles deflected to the inner wall of the structure, and the lens barrel support structure realizes the integration of each structure, and Provide the installation interface of the charged particle shielding device, which can realize the shielding of protons and electrons at the same time, and has the advantages of simple principle, easy realization, mature technology and strong versatility.

Description

technical field [0001] The invention relates to a charged particle shielding device for a space optical detector, and belongs to the technical field of spacecraft space environment protection. Background technique [0002] With the development of my country's aerospace industry, the number and types of spacecraft operating in my country have increased significantly, and on-orbit accidents or performance damage caused by the space environment have attracted more and more attention. In addition to traditional factors such as extreme temperature in space and vibration during launch into orbit, space charged particle radiation is also an important part of the space environment. In fact, due to the randomness and unpredictability of space charged particle radiation parameters to some extent, and its mechanism of action on devices is not clear yet, compared with the traditional space environment, space charged particle radiation has a greater impact on spacecraft damage is more s...

AI Technical Summary

Problems solved by technology

[0004] At present, for the shielding of charged particles, most of the passive shielding methods are used to strengthen the structural materials against radiation, and the shielding effect is limited. At the same time, there is no shielding effect on the charged particles incident along the optical path; Uniform magnetic field, based on the principle of magnetic deflection to shield incident charged particles, is mostly suitable for charged particles with small mass-to-charge ratios such as electrons; anti-coincidence technology is mostly suitable for background suppression of charged particles in high-energy photon detection, and The damage to the detection device by charged particles cannot be avoided, and the scope of application is limited

Therefore, the currently used space charged particle shielding technology has different degrees of defects, and cannot fully meet the space charged particle shielding protection requirements of space optical detectors.

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