A high vacuum light-shielding scintillator imaging sealing structure

Through the multi-stage light-shielding exhaust ring and beryllium window pinhole imaging structure, the problems of visible light interference, easy damage to the beryllium window and slow gas exhaust in the scintillator imaging sealing structure are solved, efficient shielding and rapid exhaust are achieved, the protection of the beryllium window is enhanced, and the signal-to-noise ratio and reliability of imaging are improved.

CN119414450BActive Publication Date: 2025-09-30SOUTHWESTERN INST OF PHYSICS
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Patent Information

Application Number
CN202411581610.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-07
Publication Date
2025-09-30
Estimated Expiration
2044-11-07

AI Technical Summary

Technical Problem

In the existing technology, the scintillator imaging sealing structure is easily interfered by visible light stray light under high vacuum conditions, the beryllium window is easily damaged, the gas sealing is unstable, and the gas is not discharged quickly, which affects the signal-to-noise ratio and reliability of soft X-ray imaging.

Method used

A multi-stage light-shielding exhaust ring structure and a beryllium window pinhole imaging structure are adopted to shield visible light and ultraviolet light through multi-layer reflection, enhance the protection of the beryllium window, and design a multi-stage cavity pressure difference to accelerate gas exhaust, ensuring sealing and signal conversion under high vacuum conditions.

Benefits of technology

It effectively shields visible stray light, improves imaging clarity, enhances the tolerance of the beryllium window, quickly exhausts cavity gas, ensures high vacuum sealing and signal conversion efficiency, and enhances the reliability and flexibility of soft X-ray imaging.

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Abstract

The present invention belongs to the field of scintillator imaging detection technology, and specifically discloses a high-vacuum light-shielding scintillator imaging sealing structure, including a scintillator high-vacuum cylinder, a light-shielding exhaust multi-stage structure, and a beryllium window pinhole imaging structure; the light-shielding exhaust multi-stage structure includes a light-shielding exhaust cylinder and at least two light-shielding exhaust rings, adjacent light-shielding exhaust rings are spaced and connected inside the light-shielding exhaust cylinder, a plurality of circumferentially distributed exhaust holes are provided on the end faces of the light-shielding exhaust rings, and the two ends of the light-shielding exhaust cylinder are interconnected; one end of the scintillator high-vacuum cylinder passes through the light-shielding exhaust rings in sequence and is located inside the light-shielding exhaust cylinder and is interconnected with the light-shielding exhaust cylinder and the beryllium window pinhole imaging structure; a scintillator is connected to the scintillator high-vacuum cylinder, and an exhaust port is provided on the scintillator high-vacuum cylinder. The present invention can perform multi-layer reflection shielding on visible light stray light, and at the same time realize efficient and rapid exhaust of gas in the high-vacuum cavity, thereby improving the detection efficiency and resolution capability of the scintillator imaging sealing structure under high vacuum conditions.
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