Three-energy-segment gamma imaging system based on energy window modulation and system design method

An imaging system and energy window technology, applied in design optimization/simulation, X-ray energy spectrum distribution measurement, instruments, etc., to achieve the effect of improving diagnostic efficiency and enriching measurement results

Pending Publication Date: 2022-07-15
XI AN JIAOTONG UNIV
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Problems solved by technology

The current research is mainly on multi-energy segment imaging in the soft X-band. High-energy gamma rays are mainly based on the transmission attenuation method for material identification and detection and energy spectrum reconstruction. Related Research Reports

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  • Three-energy-segment gamma imaging system based on energy window modulation and system design method
  • Three-energy-segment gamma imaging system based on energy window modulation and system design method
  • Three-energy-segment gamma imaging system based on energy window modulation and system design method

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Embodiment Construction

[0045] The present invention will be further described in detail below in conjunction with the accompanying drawings. In addition, this example uses the Monte Carlo application software Geant4 and matlab to implement the relevant steps based on the server Linux platform.

[0046] The purpose of the present invention is to provide a three-energy-segment gamma imaging system and system design method based on energy window modulation. 235 Energy window modulation of gamma rays in different energy bands of U fission gamma spectrum; design the serial arrangement configuration of coding hole and array scintillator combined attenuator, combine reflector, coupling lens, CCD and other equipment to build energy window modulation based Three-energy-band gamma imaging system: The encoded image of the three-layer array scintillator and the system point spread function PSF are obtained, and the Richardson-Lucy algorithm is used to reconstruct the image of the source region, so as to realize...

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Abstract

The invention discloses a three-energy-segment gamma imaging system based on energy window modulation and a system design method, and the imaging system comprises a radiation source, a coding hole, a gamma imaging module I, a gamma imaging module II and a gamma imaging module III which are sequentially arranged in series. The computer control equipment is connected with the gamma imaging module I, the gamma imaging module II and the gamma imaging module III; geometric centers of array scintillators in the radiation source, the coding hole, the gamma imaging module I, the gamma imaging module II and the gamma imaging module III are all located on the axis of the ray channel; the invention further discloses a design method of the imaging system. By means of the imaging system, image diagnosis of the three-energy-band gamma rays in the fission source area can be achieved. Spatial distribution information of gamma rays of the fission source region with a multi-energy-spectrum structure can be obtained through single measurement of the imaging system, and the diagnosis efficiency of gamma images of the fission source region is improved.

Description

technical field [0001] The invention belongs to the field of radiation detection and imaging, in particular to a three-energy-segment gamma imaging system and a system design method based on energy window modulation. Background technique [0002] With the continuous development of radiation imaging technology, this technology has been widely used in the fields of intense pulse radiation field measurement, fission fusion source information diagnosis, industrial non-destructive testing, nuclear medicine, and national defense security. In the field of nuclear physics experiments and pulsed radiation detection, the image diagnosis of the ray source region can provide an intuitive understanding of the physical process of the source region, which is of great value for the study and diagnosis of the physical process. Compared with traditional single-energy imaging, multi-energy segment imaging has stronger source region diagnostic capabilities. The multi-energy segment imaging syst...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/27G01T1/36G06F111/06G06F119/02
CPCG06F30/27G01T1/362G06F2111/06G06F2119/02
Inventor 张如月胡华四李彦霏胡光
Owner XI AN JIAOTONG UNIV
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