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Medium energy electron detection unit, medium energy electron detection probe and medium energy electron detector

A detection unit and detector technology, applied in the X-ray energy spectrum distribution measurement and other directions, can solve the problems of high system noise and poor energy resolution, and achieve the effects of small size, accurate measurement and light weight

Inactive Publication Date: 2018-03-23
PEKING UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a medium-energy electronic detection unit, a detection probe and a detector, which are used to solve the problem that the medium-energy electronic detector in the prior art can only be incident on a single incident direction. Particles are measured, and the problem of high system noise and poor energy resolution

Method used

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  • Medium energy electron detection unit, medium energy electron detection probe and medium energy electron detector
  • Medium energy electron detection unit, medium energy electron detection probe and medium energy electron detector
  • Medium energy electron detection unit, medium energy electron detection probe and medium energy electron detector

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Embodiment 1

[0039] Such as figure 1As shown, this embodiment discloses a medium-energy electronic detection unit 100, which includes a shielding case 110 and a plurality of position-sensitive detectors. Wherein, the number of position-sensitive detectors is set according to the needs of actual measurement. Preferably, in this embodiment, the number of position-sensitive detectors of the medium-energy electron detection unit 100 is three, namely D1, D2 and D3.

[0040] A small hole 111 is opened on one side of the shielding shell 110 ; the shielding shell is used to shield all incident medium-energy electrons except passing through the small hole 111 .

[0041] The position-sensitive detectors D1-D3 are arranged in the shielding shell 110, and the position-sensitive detectors D1-D3 are arranged facing the small hole 111. Position-sensitive detectors are used to detect the position and energy of incident particles. In this embodiment, the incident medium-energy electrons can only enter t...

Embodiment 2

[0048] This embodiment discloses a medium-energy electron detection probe 300 for measuring the energy of medium-energy electrons in various incident directions in space. Such as image 3 and Figure 4 As shown, the medium-energy electron detection probe 300 of this embodiment includes a detection unit bracket 310 and multiple medium-energy electron detection units 320 disclosed in Embodiment 1. A plurality of middle-energy electron detection units 320 is fixedly installed on the detection unit support 310, and the aperture of the middle-energy electron detection unit 320 installed on the detection unit support 310 is outward, so that the middle-energy electron detection unit 320 The position-sensitive detector can collect the energy of the incident medium-energy electron through the corresponding small hole.

[0049] Since the medium-energy electron detection unit 320 can only measure the energy of the incident medium-energy electrons within the detection angle, in order to...

Embodiment 3

[0057] Such as Figure 6 As shown, this embodiment discloses a medium-energy electronic detector, including the medium-energy electronic detection probe 610 shown in Embodiment 2, a signal conditioning unit 620 and a data processing unit 630 . in,

[0058] The medium-energy electron detection probe 610 is used to collect the energy of incident medium-energy electrons from various directions and convert them into charge pulse signals. Preferably, the medium-energy electron detection probe 610 is the energy of the medium-energy electrons collected by the position sensitive detector. Therefore, the medium-energy electron detection probe 610 converts the energy of the medium-energy electrons into a charge pulse signal, and also detects the charge pulse signal. The pulse signal is marked with a direction code to determine the direction of the charge pulse signal. Wherein, the direction code is the code corresponding to the position sensitive detector in the medium-energy electron...

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Abstract

The invention provides a medium energy electron detection unit, a medium energy electron detection probe and a medium energy electron detector. The medium energy electron detection unit includes a shielding casing and multiple position sensitive detectors. A small hole is formed in one side of the shielding casing. The position sensitive detectors are disposed in the shielding casing and orientedto the small hole, are disposed on the same plane and in the same straight line. The medium energy electron detection probe includes a detection unit bracket and a plurality of medium energy electrondetection units. The plurality of medium energy electron detection units are fixedly mounted on the detection unit bracket with the small holes oriented outwardly, and are located in the same plane, and the axes of symmetry intersect at one point. The sum of the detection opening angles of the multiple medium energy electron detection units is 180 degrees. The medium energy electron detection unitadopts pin-hole imaging technology and realizes the accurate measurement of the energy spectrum information of the 50-600 keV medium energy electrons incident in multiple directions at the same time.

Description

technical field [0001] The invention relates to the technical field of space particle radiation detection load, in particular to a medium-energy electronic detection unit, a detection probe and a detector. Background technique [0002] The detection of 50-600keV medium-energy electrons is of great significance to aerospace engineering. However, in space exploration at home and abroad, the detection of medium-energy electrons is a weak link. The reason is that due to the limitation of sensor noise, the detection of medium-energy electrons cannot be directly measured like the detection of high-energy electrons; Measurement methods for low-energy electrons such as electrostatic analysis cannot be used. [0003] Foreign Zhongneng electronic detection started earlier, and the technology is relatively mature. At present, the international instruments for detecting energetic electrons in space mainly include: [0004] One is a detector telescope composed of a collimator plus a s...

Claims

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Application Information

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IPC IPC(8): G01T1/36
CPCG01T1/36
Inventor 宗秋刚邹鸿贾向红陈鸿飞邹积清陈江施伟红于向前
Owner PEKING UNIV
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