Overview of
Overview of
复制标题
大致的了解
DOI：
10.1007/978-3-030-57706-3_1
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
S. Yang
中科院分区：
文献类型：
--
作者：
S. Yang
of Research Scientists from France, Ukraine and the United States will develop the working prototype of a new generation of multi-energy X-Ray scanners for antiterrorist use to ensure the quantitative detection of explosives with a probability up to 90-95% and very low false alarm rate. The target is envisaged to be explosives in either solid or liquid form embedded in backgrounds of inert organic materials with similar densities. Detecting such materials involves a new approach to visualization and recognition using X-rays in the dualand multi-energy regimes. The project will combine two advances technologies in one and the same instrument, i.e. one which uses multi-monochromatic filters for X-ray emitters (MXF, USA) as well as one which uses energy-selective exclusive scintillation crystals ZnSe (Te) and multi-energy detector arrays based on them (Centre for Radiation Instuments of Institute for Scintillation Materials of Concern “Institute for Single Crystals”, Ukraine). It is expected that a combination of these technologies, alongside the development of a new radiographic methods and algorithms for quantitative determination of the atomic and chemical composition of materials, will lead to substantial improvements in sensitivity to illegal and dangerous objects and materials. Participation in the project of such organizations as DETECEurope, which is known for its developments in radiation-monitoring instruments, and Lawrence Livermore National Laboratory, a leader in homeland security developments in the USA, should guarantee integration of these joint developments into the security sphere of NATO countries. Major Objectives Creation of advanced scintillation materials including exclusive ZnSe crystals and development of MER-detectors on their base with improved energy selectivity and radiation stability. Creation of an experimental installation using digital radiography with an X-ray emitter of tube voltage up to 200 kV and 3-energy mutli-monochromatic filter acquired from MXF. Fabrication of a complete detection assembly including multi-detector arrays, 256-channel receivingdetection circuits, electronics, and power supplies. Development of new multi-energy algorithms and special software for separate reconstruction of physically superimposed components of complex objects with substantial improvement (by an order of magnitude) of contrast sensitivity and detection efficiency. To build a working prototype of the new generation X-ray scanners (3D dual-energy and/or 2D threeenergy) for reliable detection of explosives. To improve the quantitative (not just qualitative) reconstruction of the effective number by two-energy radiography with increased accuracy of its determination (from 50-60% to 90-95%). To substantially increase the detection probability of explosives from 50% to 80% (within the framework of dualand three-energy radiography) contained in organic compounds. Overview of Achievements since 3 May 2009 until 31 October 2010 Experimental studies have been continued to evaluate the practical application of multi-energy radiography for distinguishing between materials with similar effective atomic numbers. The effectiveness of the proposed algorithms for the detection of explosives against a background of safe organics has been demonstrated. An improved 2x128-channel Multi-Channel Dual-Energy Receiving-Detection Circuit was installed and tested for use in a MER Tomography Scanner for detection of illegal and dangerous objects. A special Object Move & Rotation Device for Dual-Energy Radiography has been installed and tested, to allow adjustment of the X-ray source and for the precise placement of the object to be inspected.
