Neutron source three-dimensional positioning method and system

A three-dimensional positioning and positioning system technology, applied in the field of nuclear detection, can solve the problems of excessive radiation, time-consuming search and processing of neutron sources, and inability to obtain the specific position of neutron sources, so as to avoid radiation and quickly and accurately locate Effect

Pending Publication Date: 2021-02-12
CHONGQING JIANAN INSTR
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Problems solved by technology

[0003] The current neutron detection technology is mainly used to measure neutron activity and neutron dose rate, and it is impossible to obtain the specific location of the neutron source
When a neutron source loss accident occurs, because the specific location of the neutron source cannot be obtained, it usually takes a lot of time to find and deal with the neutron source, so that the radiation received by the relevant personnel exceeds the standard

Method used

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  • Neutron source three-dimensional positioning method and system
  • Neutron source three-dimensional positioning method and system
  • Neutron source three-dimensional positioning method and system

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] Such as figure 1 As shown, the present invention discloses a three-dimensional positioning method of a neutron source, comprising the following steps:

[0028] S1. Collect the distribution of the included angles between the recoil protons and the conversion layer normal at three different positions, and calculate the incident direction of the neutron beam corresponding to each position;

[0029] S2. Based on the incident direction of the neutron beam corresponding to each position, the neutron source is positioned using a triangulation method.

[0030] During specific implementation, the distribution of the included angles between the recoil protons collected at three different positions and the normal of the conversion layer in step S1 includes the following steps:

[0031] S101, using time projection chamber technology to obtain three-dimensional i...

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Abstract

The invention discloses a neutron source three-dimensional positioning method and system. The method comprises the steps: employing three gas electron multipliers, placing the three gas electron multipliers at different positions, obtaining the distribution of included angles between recoil protons collected by each gas electron multiplier and the normal line of a conversion layer during the three-dimensional positioning of a neutron source, amplifying the signals acquired by the three gas electron multipliers by using an integrated pre-amplifier, and calculating the incident direction of a neutron beam corresponding to each gas electron multiplier by using a processor; and positioning the neutron source by using a triangulation method based on the incident directions of the neutron beamscorresponding to the three gas electron multipliers. According to the invention, rapid and accurate positioning of the neutron source is realized, so that a worker can rapidly find the neutron source,and the worker can be effectively prevented from being subjected to excessive radiation in the neutron source finding process.

Description

technical field [0001] The invention relates to the technical field of nuclear detection, in particular to a method and system for three-dimensional positioning of a neutron source. Background technique [0002] A neutron source is a device that emits neutrons. There are many types of neutron sources, ranging from hand-held radioactive sources to research reactors and fission sources at neutron research facilities. Depending on neutron energy, neutron flux, equipment size, cost, and government regulations, these devices have a wide variety of uses in physics, engineering, medicine, nuclear weapons, oil exploration, biology, chemistry, nuclear power, and other industries [0003] The current neutron detection technology is mainly used to measure neutron activity and neutron dose rate, and it is impossible to obtain the specific location of the neutron source. When a neutron source loss accident occurs, because the specific location of the neutron source cannot be obtained, ...

Claims

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Application Information

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IPC IPC(8): G01T3/00
CPCG01T3/00
Inventor 吴会寅
Owner CHONGQING JIANAN INSTR
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