Method, device and system for radioactive source positioning

A positioning method and positioning device technology, applied in the field of radioactive source detection, can solve problems such as low positioning accuracy, low resolution capability, and inaccurate radioactive source angle, and achieve the effect of improving sensitivity and accuracy

Active Publication Date: 2014-03-19
INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
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  • Application Information

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Problems solved by technology

[0003] However, when the position of the radioactive source is not on the same plane as the crystal array, the calculated radioactive source angle is not accurate enough, which makes the positioning accuracy low

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  • Method, device and system for radioactive source positioning
  • Method, device and system for radioactive source positioning
  • Method, device and system for radioactive source positioning

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Elements and features described in one drawing or one embodiment of the present invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that representation and description of components and processes that are not related to the present invention and known to those of ordinary skill in the art are omitted from the drawings and descriptions for the purpose of clarity. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the ar...

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Abstract

The invention discloses a method, a device and a system for radioactive source positioning. The method comprises the steps of acquiring a relation between a crystal count ratio in a crystal array of a detector and the radioactive source angle according to analog data; measuring the actual crystal count of the crystal array when the radioactive source under test radiates rays; acquiring a plurality of denoising crystal count ratios according to the actual crystal count and the various count noises within a variation range of count noises, acquiring actual radioactive source angles corresponding to the denoising crystal count ratios according to the relation between the crystal count ratio and the radioactive source angle, and selecting the actual radioactive source angle when the count noises are optimum as the radioactive source angle of the radioactive source under test. The device comprises a processing module, a measuring module and a calculating module. The system comprises a radioactive source positioning device, the radioactive source under test and the detector. According to the invention, the crystal count ration is adopted to act as a calculation parameter, effectively noise deducting technologies are adopted, and the sensitivity and the accuracy of radioactive source positioning are improved.

Description

technical field [0001] The invention relates to radioactive source detection technology, in particular to a radioactive source positioning method, device and system. Background technique [0002] Radioactive source detection can be widely used in various radioactive environments, such as laboratories, nuclear power plants, nuclear fuel plants, large heavy ion accelerators, radioactive source libraries, etc. There are many kinds of detectors used to detect gamma rays. The current more advanced technology is to use the principle that the particles in gamma rays can be absorbed by cesium iodide (CsI) or bismuth germanate (BGO) and other crystals, using four The crystals form a 2×2 crystal array to detect and count the same radioactive source, and deduce the angle of the radioactive source according to the count value of each crystal to determine the orientation of the radioactive source. [0003] However, when the position of the radioactive source is not on the same plane as ...

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Application Information

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IPC IPC(8): G01T1/00G01T1/18
Inventor 魏龙张译文李道武章志明王宝义帅磊王英杰朱美玲孙世峰张玉包唐浩辉黄先超柴培李婷庄凯姜小盼刘彦韬周魏曾凡剑
Owner INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
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