A portable removable detection device was developed based on the tagged neutron method with ING-27 neutron generator and two LYSO gamma detectors. This system was designed to detect explosives hidden in the package with strong interferences such as milk powder and detergent. The structure design of the system was modeled and calculated by using the MCNP5 code. The gamma spectra were tested and simulated for ~300 g TNT, ~300 g ammonium nitrate, ~400 g milk powder, and ~400 g detergent in the package, respectively. The experimental measurements and simulation calculations were carried out on the gamma spectra of the four combinations (Milk powder + TNT, Milk powder + AMM, Detergent + TNT, Detergent + AMM) in the package. The comparison between the simulated result and the experimental data is in a good agreement. The experimental data were analyzed to identify different samples. The effect of the selection of the time window on the gamma spectra was also compared. Principal component analysis was used to distinguish explosives from non-explosives in luggage.

基于带有ING-27中子发生器和两个LYSOγ探测器的标记中子方法，开发了一种便携式可移动检测装置。该系统旨在检测隐藏在包装中的强烈爆炸物，例如奶粉和清洁剂。使用MCNP5代码对系统的结构设计进行建模和计算。对包装中的〜300 g TNT，〜300 g硝酸铵，〜400 g奶粉和〜400 g清洁剂分别进行了伽玛光谱测试和模拟。对包装中的四种组合（奶粉+ TNT，奶粉+ AMM，洗涤剂+ TNT，洗涤剂+ AMM）的伽马光谱进行了实验测量和模拟计算。仿真结果与实验数据的比较吻合良好。分析实验数据以鉴定不同的样品。还比较了时间窗口的选择对伽玛光谱的影响。主成分分析用于区分行李中的爆炸物和非爆炸物。