It has been demonstrated that the gadolinium-core plastic scintillator sphere is a stable, highly sensitive, transportable, and cost-efficient neutron detector made of environmentally friendly components. This detector comprises a metal gadolinium core inserted at the center of a high-scale plastic scintillator sphere. In this study, we conducted simulations to investigate the feasibility of obtaining accurate neutron ambient dose equivalent measurements using this type of detector. The Geant4 code based on the Monte Carlo method was employed to calculate the detector light output spectra for different neutron energies and the response function of the high energy part above 3 MeVee. The neutron energy responses of the detector were combined in an appropriate manner to match the energy-dependent neutron fluence to the ambient dose equivalent conversion coefficients. The Monte Carlo simulation results were used to optimize the thickness of the metal gadolinium core and plastic scintillator. The simulation results showed that a metal gadolinium core with a thickness of several hundred microns is a suitable choice considering manufacturing costs and the detector's efficiency. In addition, this type of detector with the plastic scintillator sphere size of 8″ can predict the neutron ambient dose equivalent with good accuracy over a wide energy range from 0.01 eV to 20 MeV, Although it underestimated the neutron dose equivalent in the energy range from 10 keV to about 5 MeV and overestimated it in the energy interval from 5 MeV to 20 MeV.

业已证明，plastic芯塑料闪烁体球是由环保组件制成的稳定，高度灵敏，可运输且具有成本效益的中子探测器。该探测器包括一个金属ado芯，该金属inserted芯插入到大型塑料闪烁体球体的中心。在这项研究中，我们进行了模拟，以调查使用这种类型的探测器获得准确的中子环境剂量当量测量值的可行性。使用基于蒙特卡洛方法的Geant4代码来计算不同中子能量的探测器光输出光谱以及3 MeVee以上的高能部分的响应函数。以适当的方式组合探测器的中子能量响应，以使依赖于能量的中子注量与环境剂量当量转换系数相匹配。蒙特卡罗模拟结果用于优化金属g芯和塑料闪烁体的厚度。仿真结果表明，考虑到制造成本和检测器的效率，厚度为几百微米的金属ado芯是合适的选择。此外，这种类型的探测器的塑料闪烁体球体尺寸为8英寸，可以在0.01 eV至20 MeV的宽能量范围内以良好的精度预测中子环境剂量当量，