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Close-packed neutron detector applied to vacuum environment

A technology of neutron detector and vacuum environment, which is applied in the measurement of neutron radiation, radiation measurement, material analysis using wave/particle radiation, etc. Problems, to achieve the effect of simple and convenient disassembly and maintenance operations, high repeat positioning accuracy, and shortened maintenance cycle

Pending Publication Date: 2022-08-05
CHINA SPALLATION NEUTRON SOURCE SCI CENT +2
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005]There are less 3 He tube detectors currently used in vacuum environments, and most of the structural designs are large in size and mass, requiring disassembly and installation Inconvenient, difficult to maintain, and unable to achieve accurate and repeatable positioning of the detector after maintenance

Method used

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  • Close-packed neutron detector applied to vacuum environment
  • Close-packed neutron detector applied to vacuum environment
  • Close-packed neutron detector applied to vacuum environment

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specific Embodiment approach

[0028] like figure 1 and 2 shown, the detector module consists of 16 3 The He tube assembly 3 is formed by close-packed installation and is the basic unit for forming a large-area detection surface. More than three sets of detector modules 3 are installed on the detector support platform 2 through an array of zero point positioners 5 to form a large-area detection surface, and are integrally installed on a mobile trolley located in the vacuum scattering cavity of the micro-angle neutron scattering spectrometer.

[0029] The detector module includes 3 He tube assembly 3, airtight cavity assembly 1 and tensioning mechanism 4, in the detector module 3 The He tube assembly 3 is installed on the detector support platform 2 located on the mobile trolley in the vacuum scattering chamber in a close-packed manner by using the zero point locator 5. With the advantage of the high-precision repeated positioning of the zero point locator 5, all installation and maintenance can be realiz...

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Abstract

A densely-arranged neutron detector applied to a vacuum environment mainly comprises a detector module and a supporting platform, and the detector module is composed of 16 3He pipe assemblies, a closed cavity, detector electronics installed in the closed cavity and the like. The detector supporting platform is used for installing the detector modules in an array mode to form a large-area detector plane. The large-area detection surface is formed by densely arranging more than three groups of detector modules, the independent detector modules can be quickly disassembled, assembled and maintained, the repeated positioning precision of the modules is high, the disassembly, assembly and maintenance operations are simple and convenient, and the maintenance period is greatly shortened.

Description

technical field [0001] The invention relates to the technical field of neutron detection, in particular to a neutron detector applied in a vacuum environment. Background technique [0002] Spallation Neutron Source is a large-scale multidisciplinary research platform for neutron scattering research and application. Many major scientific issues and national strategic needs related to the national economy and people's livelihood are of great significance. [0003] Neutron detectors are one of the key components of neutron spectrometers, which are used to detect the microscopic structure and motion of matter. [0004] The micro-angle neutron scattering spectrometer technology is an upgrade of the traditional small-angle neutron scattering spectrometer technology, and has both the performance of the ordinary small-angle scattering mode and the small-angle scattering mode. The strip spectrometer is mainly used in high and low temperature, magnetic field and other sample environm...

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Application Information

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IPC IPC(8): G01T3/00G01T7/00G01N23/202G01N23/20008
CPCG01T3/00G01T7/00G01N23/202G01N23/20008
Inventor 许虹孙志嘉周健荣周晓娟庄建邓红桃杨雪锋
Owner CHINA SPALLATION NEUTRON SOURCE SCI CENT
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