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Compact gamma ray detection optical system and detection method

A gamma ray and optical system technology, applied in the field of fusion process detection, can solve the problems of interference with adjacent equipment observation, diagnostic channels, occupancy, large solid angle, etc., to filter out stray Cerenkov photon interference, remove Effect of interference information and filtering stray light

Pending Publication Date: 2020-10-02
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, proximity detection occupies a large solid angle and seriously interferes with the observation and diagnosis channels of adjacent equipment

Method used

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  • Compact gamma ray detection optical system and detection method
  • Compact gamma ray detection optical system and detection method
  • Compact gamma ray detection optical system and detection method

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Embodiment Construction

[0055] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0056] Because gamma rays have strong penetrability, there is no time-of-flight dispersion problem, they can be detected in real time at a long distance, and have higher time resolution capabilities, therefore, the present invention proposes a fusion history diagnostic optical system based on gamma-ray detection , in this system, the gamma ray is incident on the converter 1 such as beryllium, and the gamma ray bombards the beryllium atom to generate high-speed electrons. 2 、C 2 f 6 etc.) to generate Cerenkov radiation photons, and through the detection of photon emission history, the gamma ray radiation history can be obtained indirectly.

[0057] Such as figure 1 As shown, a compact gamma ray detection optical system is based on the detection of the fusion characteristic product (gamma ray) radiation process to obta...

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Abstract

The invention provides a compact gamma ray detection optical system and a detection method, and solves the problems of low fusion process detection time resolution capability and interference to the work of adjacent equipment in the prior art. The system comprises a sealed shell, a detector, and a conversion body, a secondary reflector and a main reflector which are arranged in the emitting direction of gamma rays, a sealing sleeve is arranged in the sealing shell, one end of the sealing sleeve is sealed through a pressure sealing window, and the other end is connected with the sealing shell;a cavity formed by the sealing sleeve, the pressure sealing window and the sealing shell is filled with high-pressure gas; the main reflector is sleeved on the sealing sleeve; the detector is arrangedin the sealing sleeve, and the detection surface is located between the main reflector and the secondary reflector; the main reflector and the secondary reflector are concave reflectors, and the distance T between the main reflector and the secondary reflector is larger than T1 and smaller than T2. T is the time when the gamma rays enter the conversion body to generate photons and reach the detection surface through the main reflector, the secondary reflector and the pressure sealing window, wherein T1 is the time when the direct-through gamma reaches the detection surface, and T2 is the timewhen the secondary gamma rays reach the detection surface.

Description

technical field [0001] The invention relates to fusion history detection technology, in particular to a compact gamma ray detection optical system and detection method applied to nuclear fusion research. Background technique [0002] Fusion energy is a pollution-free clean energy, and countries all over the world are competing to invest a lot of manpower and material resources in the research and development of related technologies. However, the conditions for achieving fusion are extremely harsh, and the fuel needs to reach extreme high temperature and high pressure. At present, laser inertial confinement fusion (ICF) and magnetic confinement fusion are the two most promising technical approaches to achieve this condition. [0003] In laser inertial confinement fusion, the high-energy laser is incident on the black cavity, and the energy is deposited on its inner wall to generate X-ray radiation; X-rays are reabsorbed and re-radiated by the black cavity, and finally form a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/16
CPCG01T1/16
Inventor 闫亚东王军宁李奇薛艳博高炜刘霞刚
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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