Testing device based on uniform thermal neutron field radiation of array neutron source

A test device and neutron source technology, applied in the field of nuclear radiation protection, can solve problems affecting the accuracy of instrument monitoring data, large instrument space span, and uneven irradiation field, so as to achieve reliable test results and the risk of accidental exposure of personnel Small, Highly Accurate Effects

Active Publication Date: 2019-03-12
NO 719 RES INST CHINA SHIPBUILDING IND
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Problems solved by technology

At present, the test and calibration of neutron radiation detection instruments are mostly carried out by using the radiation field generated by a single standard neutron source that is close to a point source. For larger instruments, d

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  • Testing device based on uniform thermal neutron field radiation of array neutron source
  • Testing device based on uniform thermal neutron field radiation of array neutron source
  • Testing device based on uniform thermal neutron field radiation of array neutron source

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Embodiment Construction

[0020] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0021] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected ...

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Abstract

The invention relates to the technical field of nuclear radiation protection, and provides a testing device based on uniform thermal neutron field radiation of an array neutron source. The device comprises an array neutron source, a shielding body, an instrument testing passage and a carrying platform; the array neutron source comprises neutron sources and neutron source shielding drawers, the neutron source shielding drawers comprise neutron source shielding drawer bodies and neutron source shielding drawer plungers, the neutron sources are placed in the neutron source shielding drawer bodies, the neutron source shielding drawer plungers are arranged on the neutron source, array distribution of 12 241Am-Be neutron sources is adopted, every two neutron sources are taken as a group to be placed in a neutron source shielding drawers, wherein the activity of the neutron sources placed at the two ends is 2Ci, the activity of the 10 neutron sources placed in the middle are 1Ci, and the array neutron source is installed in the shielding body and used for generating a neutron radiation field. The testing device has the advantages that a thermal neutron field which is more uniform and hasa larger dimension can be generated, the accuracy is high when the testing device is used for large-dimension detecting instrument testing, and the testing result is reliable.

Description

technical field [0001] The invention relates to the technical field of nuclear radiation protection, in particular to a uniform thermal neutron field radiation test device based on an array neutron source. Background technique [0002] Neutron radiation is one of the most important types of ionizing radiation, and there are various types of neutron radiation detection instruments. At present, the test and calibration of neutron radiation detection instruments are mostly carried out by using the radiation field generated by a single standard neutron source that is close to a point source. For larger instruments, due to the large space span of the instrument, the irradiated place The field is uneven, which leads to large errors in the process of equipment testing and calibration, which seriously affects the accuracy of instrument monitoring data. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings in the above-mentioned pr...

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Application Information

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IPC IPC(8): G01T7/00
CPCG01T7/005
Inventor 祝娇李清华徐江涛代传波郭智荣郑文祥张淮超胡玉杰
Owner NO 719 RES INST CHINA SHIPBUILDING IND
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