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SGS (Segmented Gamma-ray Scanner) and TGS (Tomographic Gamma Scanning) combined measurement device and optimization method of collimator

A technology of measuring device and collimator, which is applied to measuring devices, instruments, scientific instruments, etc., can solve the problems of high measurement cost, inability to measure multiple media, and long measurement time.

Active Publication Date: 2014-07-02
CHINA INSTITUTE OF ATOMIC ENERGY
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Problems solved by technology

This technique is suitable for the measurement of non-uniformly distributed radionuclides in medium-low density heterogeneous media, and its weakness is that the measurement time is long and the measurement cost is high
[0006] However, the above two measurement techniques are often used alone and cannot measure a variety of media

Method used

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  • SGS (Segmented Gamma-ray Scanner) and TGS (Tomographic Gamma Scanning) combined measurement device and optimization method of collimator
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  • SGS (Segmented Gamma-ray Scanner) and TGS (Tomographic Gamma Scanning) combined measurement device and optimization method of collimator

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Embodiment Construction

[0089] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0090] The present invention combines the respective measurement requirements of SGS and TGS collimators, through the Monte Carlo simulation method, for specific measurement objects and measurement systems, and for SGS specific layering and TGS block measurement requirements, a joint device that can meet the measurement requirements of SGS and TGS .

[0091] see figure 1 As shown, it is a front view structure diagram of the combined device of SGS and TGS in the present invention, the combined measuring device includes a detection system 1, a lead shield 2, a collimator 3, a sample measurement platform 4 and a projection shield 5, wherein the The detection system 1 is fixed on the measurement bench, the detector is installed in the lead shield 2, and the collimator 3 includes a SGS collimator module or a T...

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Abstract

The invention relates to an SGS (Segmented Gamma-ray Scanner) and TGS (Tomographic Gamma Scanning) combined measurement device and an optimization method of a collimator. The device comprises a detection system, a lead shielding body, a collimator, a sample measurement platform and a projection shielding body, wherein the detection system is fixed on a measurement rack; a detector is mounted in the lead shielding body; the collimator comprises one out of an SGS collimator module or a TGS collimator module and is mounted on the lead shielding body; the sample measurement platform is arranged between the collimator and the projection shielding body; in a measurement process, a sample is placed on the sample measurement platform; in the measurement process, a TGS collimator and an SGS collimator can be switched; the TGS collimator and the SGS collimator are optimally designed through a Monte Carlo simulation method to determine the shape. The SGS and TGS combined measurement device combines self-measurement requirements of the SGS and the TGS and combines the measurement requirements of the SGS and the TGS through the Monte Carlo simulation method, so as to obtain a combined device meeting the measurement requirements of the SGS and the TGS; the SGS and TGS combined measurement device can be switched between two measurement modes.

Description

technical field [0001] The invention relates to the technical field of non-destructive analysis (Non-Destructive Assay-NDA) of nuclear materials, in particular to a joint measurement device of SGS and TGS. Background technique [0002] Segmented Gamma-ray Scanner (SGS) and Tomographic Gamma Scanning (TGS), as important NDA technologies, have been widely used in nuclear safeguards, nuclear security, domestic nuclear material control and Radioactive waste classification inspection and other fields. SGS is one of the NDA technologies developed to measure the quality of uranium, transuranium nuclides and their fission products in non-uniform medium and low-density nuclear waste generated during the nuclear fuel cycle. The SGS device is mainly Composed of detection system, lead shielding body, collimator, sample rotating platform and transmission source, SGS analysis technology is introduced to solve the two problems of sample absorption correction and non-uniformity correction f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/00G01N23/06G01N23/20
Inventor 郜强王仲奇甘霖
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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