检索结果-南通市图书馆

Hybrid model for muon tomography and quantitative analysis of image quality

Nuclear Science and Techniques 2022年第7期33卷 1-13页

作者： Si-Yuan Luo Yu-He Huang Xuan-Tao Ji Lie He Wan-Cheng Xiao Feng-Jiao Luo Song Feng Min Xiao Xiao-Dong Wang School of Nuclear Science and Technology University of South ChinaHengyang 421001China

muon tomography is a novel method for the non-destructive imaging of materials based on muon rays,which are highly penetrating in natural background ***,the most commonly used imaging methods include muon radiography and muon tomography.A previously studied method known as coinciding muon trajectory density tomography,which utilizes muonic secondary particles,is proposed to image low and medium atomic number(Z)***,scattering tomography is mostly used to image high-Z materials,and coinciding muon trajectory density tomography exhibits a hollow phenomenon in the imaging results owing to the self-absorption *** address the shortcomings of the individual imaging methods,hybrid model tomography combining scattering tomography and coinciding muon trajectory density tomography is proposed and *** addition,the peak signal-to-noise ratio was introduced to quantitatively analyze the image *** imaging models were simulated using the Geant4 toolkit to confirm the advantages of this innovative *** simulation results showed that hybrid model tomography can image centimeter-scale materials with low,medium,and high Z *** high-Z materials with similar atomic numbers,this method can clearly distinguish those with apparent differences in *** to the peak signal-to-noise ratio of the analysis,the reconstructed image quality of the new method was significantly higher than that of the individual imaging *** study provides a reliable approach to the compatibility of scattering tomography and coinciding muon trajectory density tomography.

关键词： Monte Carlo simulation muon tomography Image reconstruction

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A position resolution MRPC for muon tomography

引用

Chinese Physics C 2014年第4期38卷 50-54页

作者：樊星明王义王学武曾智曾鸣赵自然程建平 D.Gonzalez-Diaz Key Laboratory of Particle & Radiation Imaging (Tsinghua University) Ministry of EducationDepartment of Engineering Physics Tsinghua University Laboratorio de Física Nuclear y Altas Energías University of Zaragoza

muon tomography is a promising method in the detection and imaging of high Z material. In general, considering the quality of track reconstruction in imaging, a detector of good position resolution, high efficiency and large area is required. This paper presents the design and study of a prototype of position sensitive MRPC with 0.15 mm narrow gas gap and 2.54 mm strip readout. Through a cosmic-ray experiment, the performance of MRPC module is carefully observed and each channel is calibrated. Through an X ray experiment with a narrow slit, the position resolution is studied. The results show that the time resolution of the module can reach 61ps and the spatial resolution can reach 0.36 mm.

关键词： MRPC muon tomography position resolution

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A high-position-resolution trajectory detector system for cosmic ray muon tomography:Monte Carlo simulation

引用

Radiation Detection Technology and Methods 2022年第2期6卷 244-253页

作者： Jiajia Zhai Haohui Tang Xianchao Huang Shuangquan Liu Yingjie Wang Chong Li Xiuzuo Liang Yi Zhang Meichan Feng Zhiming Zhang Long Wei Beijing Engineering Research Center of Radiographic Techniques and Equipment Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China

Purpose The research focuses on the related designing and simulating the high-position-resolution trajectory detector system based on cosmic ray muon *** The energy deposition of muon in the detector varies with the length of the ionization *** The simulation of the submillimeter detector system was designed for muon *** optimal position resolution of the detector reached 0.6 *** The entire research process includes the selection of analysis of parameters affecting system design,designing of two high-position-resolution detectors based on plastic scintillators,implementation of different imaging algorithms and image quality assessment based on different imaging *** provides a solution based on high positional resolution plastic scintillator detectors for cosmic ray muon scattering imaging.

关键词： Cosmic ray muon tomography Plastic scintillator Position resolution PoCA MLSD-EM

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Simulation and experimental comparison of the performance of four-corner-readout plastic scintillator muon-detector system

引用

Nuclear Science and Techniques 2024年第11期35卷 1-12页

作者： Lie He Si-Yuan Luo Xiang-Man Liu Yu-Cheng Zou Hai-Feng Zhang Wan-Cheng Xiao Yu-He Huang Xiao-Dong Wang School of Nuclear Science and Technology University of South ChinaHengyang 421001China Key Laboratory of Advanced Nuclear Energy Design and Safety(MOE) University of South ChinaHengyang 421001China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China School of Physical Sciences University of Science and Technology of ChinaHefei 230026China

Cosmic-ray muons are highly penetrating background-radiation particles found in natural *** this study,we develop and test a plastic scintillator muon detector based on machine-learning *** detector underwent muon position-resolution tests at the Institute of Modern Physics in Lanzhou using a multiwire drift chamber(MWDC)experimental *** the simulation,the same structural and performance parameters were maintained to ensure the reliability of the simulation *** Gaussian process regression(GPR)algorithm was used as the position-reconstruction algorithm owing to its optimal *** results of the Time Difference of Arrival algorithm were incorporated as one of the features of the GPR model to reconstruct the muon hit *** accuracy of the position reconstruction was evaluated by comparing the experimental results with Geant4 simulation *** the simulation,large-area plastic scintillator detectors achieved a position resolution better than 20 *** the experimental-platform tests,the position resolutions of the test detectors were 27.9 *** also analyzed factors affecting the position resolution,including the critical angle of the total internal reflection of the photomultiplier tubes and distribution of muons in the *** were performed to image both large objects and objects with different atomic *** results showed that the system could image high-and low-Z materials in the constructed model and distinguish objects with significant density *** study demonstrates the feasibility of the proposed system,thereby providing a new detector system for muon-imaging applications.

关键词： Monte Carlo simulation muon tomography TDOA Machine learning Image reconstruction

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：