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Neutron shielding pipeline used in high vacuum environment

A high-vacuum, neutron technology, applied in neutron sources and other directions, can solve problems such as difficult to use, and achieve the effect of reducing the gas output rate

Pending Publication Date: 2020-02-07
CHINA SPALLATION NEUTRON SOURCE SCI CENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Boron-containing polyethylene materials are widely used in radiation field shielding because of their good moderation and absorption effects on neutrons. Generally, this material is only used as a shielding material on the outer walls of structures such as neutron shielding pipes, neutron collimators, and neutron collectors.

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  • Neutron shielding pipeline used in high vacuum environment
  • Neutron shielding pipeline used in high vacuum environment
  • Neutron shielding pipeline used in high vacuum environment

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Embodiment Construction

[0020] The present application will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

[0021] This application provides a neutron shielding pipeline used in a high vacuum environment, specifically used in experimental equipment for neutron nuclear data measurement, mainly for the parameters and parameters of the dihedral white light neutron beam at the China Spallation Neutron Source Its related properties are measured.

[0022] see figure 1 and figure 2 As shown, the neutron shielding pipe provided by the present application includes: an outer pipe 1 and an inner pipe 2 .

[0023] The outer tube 1 is sheathed on the outer wall of the inner tube 2, forming a nested structure with the inner tube 2, and is mainly used to provide a vacuum environment for the inner tube 2.

[0024] Such as figure 1 As shown, the outer wall of the outer tube 1 is provided with multiple adjustment blocks 12 for adjusting the collim...

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Abstract

The invention discloses a neutron shielding pipeline used in a high vacuum environment. The neutron shielding pipeline comprises an inner pipe made of a shielding material and an outer pipe arranged on the outer wall of the inner pipe in a sleeving mode, wherein the outer diameter of the inner pipe is basically the same as the inner diameter of the outer pipe, and the extending direction and the extending length of the inner pipe are consistent with the extending direction and the extending length of the outer pipe respectively; the outer pipe is used for providing the vacuum environment for the inner pipe, and the inner wall of the inner pipe encloses a channel for conveying neutrons; the inner wall, the outer wall and the end face of the inner pipe are uniformly coated with coating layers with preset thicknesses respectively, and the coating layers are used for reducing the gas efficiency of the inner pipe. The inner pipe made of the shielding material not only can effectively shieldthe influence of nuclear radiation, but also can reduce the gas efficiency of the inner pipe under the action of the coating layers, has no influence on the vacuum environment, and can be used in thehigh vacuum environment.

Description

technical field [0001] The present application relates to the technical field of wide-spectrum neutron source devices, in particular to a neutron shielding pipeline used in a high vacuum environment. Background technique [0002] Boron-containing polyethylene materials are widely used in radiation field shielding because of their good moderation and absorption of neutrons. Generally, this material is only used as a shielding material on the outer walls of structures such as neutron shielding pipes, neutron collimators, and neutron collectors. Contents of the invention [0003] The present application aims to provide a neutron shielding pipeline used in a high vacuum environment, so as to reduce the outgassing rate of the neutron shielding pipeline and facilitate use in a vacuum environment. [0004] The application provides a neutron shielding pipeline used in a high vacuum environment, comprising: an inner tube made of shielding material, and an outer tube sleeved on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21G4/02
CPCG21G4/02
Inventor 王鹏程敬罕涛李强黄涛孙晓阳
Owner CHINA SPALLATION NEUTRON SOURCE SCI CENT
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