Large-area X-ray pulse detection device based on microchannel plate split joint

A technology of micro-channel plate and pulse detection, which is applied in X-ray energy spectrum distribution measurement and other directions, can solve the problems of low detection efficiency and long observation time of the system, and achieve the effect of large area and long service life

Inactive Publication Date: 2013-06-19
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0007] In order to solve the existing technical problems that the use of MCP detectors to detect X-ray pulses requires extremely long observation time and the detection efficiency of the entire system is low, the purpose of the present invention is to provide a method based on micro-channel plate MCP splicing to realize large-area X-ray pulses The detection device overcomes the shortcomings of the existing technology to realize the detection of extremely weak X-ray pulses, and provides a large-area detector detection device for pulsar navigation

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  • Large-area X-ray pulse detection device based on microchannel plate split joint

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Embodiment

[0039] The present invention adopts MCP-anode as the basic unit of the whole detector. Taking 3×3 array splicing as an example, in order to facilitate integrated splicing and increase the effective area of ​​the detector as much as possible, a square MCP with a single block size of 7cm×7cm is selected to form a 3×3 MCP array with a total detection area of ​​400cm 2 .

[0040] In order to reduce the cosmic ray background radiation and limit the field of view of the detector, a collimation device is installed on the input surface of the detector. The collimator consists of a 1mm thick grid, such as Picture 1-1 As shown, the grid wall thickness is 30 μm, the spacing is 200 μm, and the duty cycle is 60%. The grid material is composed of Cu or Au with high atomic number. The detector response energy spectrum ranges from 1 to 50keV. In order to effectively shield background radiation such as ultraviolet radiation and low-energy X-rays, appropriate filter materials must be select...

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Abstract

The invention relates to a large-area X-ray pulse detection device based on microchannel plate split joint. The large-area X-ray pulse detection device comprises an X-ray photoelectric cathode, a first insulating layer, a microchannel plate (MCP) input electrode press ring, a second insulating layer, an MCP input electrode, a first MCP layer, an intermediate electrode, a second MCP layer, a third insulating layer, an MCP output electrode, a fourth insulating layer, and an anode which are sequentially stacked up, wherein the first MCP layer and the second MCP layer are both large-area MCP detectors, and each MCP detector comprises a detector body, a split-joint framework and a processing circuit. The large-area X-ray pulse detection device resolves the technical problems that an existing MCP detector is adopted to detect the X-ray pulse, extremely long observation time is needed, and detection efficiency of the whole system is low, a detection method and a device which are high in detection efficiency are provided for an X-ray pulsar navigation system, photon measurement information with high time resolution and high time accuracy is provided for X-ray pulsar navigation, and guarantee is provided for high precision of navigation positioning.

Description

technical field [0001] The invention relates to a large-area X-ray detector device, which can be used for X-ray pulsar pulse detection. It adopts the large-area detector technology based on micro-channel plate MCP splicing, which solves the problem of extremely weak X-ray pulse detection and future pulse detection in deep space. It is an important method and experimental device for the sustainable development and engineering research of star navigation. At the same time, the experimental method and device can also be used for other large-area X-ray pulse detection. Background technique [0002] X-ray pulsar navigation is a new type of autonomous navigation technology that detects the periodic X-ray pulses of deep-space pulsars to determine the position, velocity and attitude of spacecraft. X-ray pulsar navigation can provide rich navigation information for low-earth orbit, deep space and interstellar space vehicles, and realize high-precision autonomous navigation and opera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/36
Inventor 盛立志赵宝升刘永安鄢秋荣赛小锋韦永林周峰
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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