Simulation on spatial resolution of scintillator arrays based on neutron penumbral imaging system
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摘要: 为了比较3种闪烁体探测器的性能，利用蒙特卡罗方法计算了不同光纤直径的闪烁体阵列的空间分辨和能量沉积。模拟结果表明:相同光纤直径的普通液体闪烁体阵列空间分辨力比塑料闪烁体阵列提高了约0.1 mm，而氘代液体闪烁体阵列空间分辨力约为普通液体闪烁体阵列的1/2；富氢闪烁体的能量沉积比氘代闪烁体高；闪烁体光纤直径越小，分辨力越好；闪烁体越厚，光产额越高。Abstract: In order to compare three kinds of scintillation detectors，the Monte Carlo method is introduced to calculate the spatial resolution and energy deposition of scintillator arrays with different fiber diameters. According to simulation results， the resolution of standard liquid scintillator array is better than that of plastic scintillator array， and the resolution of deuterated liquid scintillator array is almost half that of standard liquid scintillator array. The energy deposition of hydrogen-rich scintillator is higher than that of deuterated scintillator. Moreover, smaller fiber diameter leads to better spatial resolution, and thicker scintillator leads to higher energy deposition.
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Key words:
- neutronpenumbralimaging /
- scintillatorarray /
- spatialresolution /
- montecarlomethod
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