Position-sensitive anode detector and method of making the same

A position-sensitive anode and detector technology, which is applied in photometry, photometry, and instruments using electric radiation detectors, can solve problems such as small dynamic range, difficult processing of position-sensitive anodes, and low time resolution, and achieve Large dynamic range, compact structure, and good time characteristics

Active Publication Date: 2018-08-03
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 problems of the existing position-sensitive anode detectors such as small dynamic range, low time resolution, and difficult processing of position-sensitive anodes, the present invention provides a position-sensitive anode detector and its manufacturing method

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  • Position-sensitive anode detector and method of making the same
  • Position-sensitive anode detector and method of making the same

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Embodiment Construction

[0056] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0057] The effective working size of the position-sensitive anode detector of the present invention is 20x20mm~100x100mm, including a cathode window 1, a photocathode 2, an MCP electron multiplier 8, a retaining spring 7 (MCP fixing ring), a position-sensitive anode and a cermet tubular shell, The detector adopts a double proximity electron focusing structure, that is, the proximity distance between the cathode surface and the MCP input surface is 1~3mm, and the proximity distance between the MCP output surface and the electron receiving anode surface is 1~2mm, see figure 1 .

[0058] from figure 1 It can be seen that the metal-ceramic tubular shell has a square structure (not limited to a square shape, and can also be a circular structure), including a metal indium sealing groove 3, a first ceramic ring 4, a retainer positioning metal ring 5, and a se...

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Abstract

The invention relates to the technical field of photon counting imaging detection, and particularly relates to a position-sensitive anode detector and a manufacturing method thereof. The detector comprises a cathode window having a photoelectric cathode, an MCP electron multiplier, a position-sensitive anode and a tubular shell. The position-sensitive anode comprises an anode insulating substrate and a metal film anode which is arranged on the anode insulating substrate. According to the metal film anode, nxn independent anodes are arranged in parallel along a horizontal direction to form an anode array, each independent anode is square and an insulating channel is arranged between the adjacent independent anodes. Each independent anode electrode lead perpendicularly penetrates through the anode insulating substrate. Manufacturing of the detector is completed by the steps of sealing of the tubular shell, indium tubular shell, vapor plating of the cathode window metal film, manufacturing the anode insulating substrate, manufacturing the metal film anode, assembling the detector component, manufacturing the photoelectric cathode and indium sealing of the detector. The detector has a large dynamic range and can work under the condition of single photon incident light and can also work under the condition of strong incident light.

Description

technical field [0001] The invention relates to the technical field of photon counting imaging detection, in particular to a position-sensitive anode detector and a manufacturing method thereof. Background technique [0002] Photon counting imaging detection technology is a new technology for imaging extremely weak light targets. Using the characteristics of the natural discretization of the output signal of photodetector devices under the condition of extremely weak light irradiation, photon counting imaging is performed by pulse amplitude discrimination or pulse counting. probing. Due to the advantages of high gain and good signal-to-noise ratio, position-sensitive anode detectors based on microchannel plates (MCPs) have been more and more widely used in photon technology detection fields such as astronomy, high-energy physics, and nuclear medical imaging. Position-sensitive anode detectors can be divided into impedance type and charge split type according to the anode de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J1/42H01J40/16
CPCG01J1/42G01J1/4204H01J40/16
Inventor 韦永林赛小锋刘永安盛立志
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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