Geant4 and Serpent Codes Simulation of the Response of the Detector Based on ZnS(Ag) + ⁶LiF for Registration of Neutrons Generated by EAS and by Various Nuclear Objects

The description of a new neutron detector based on a ZnS(Ag) + ⁶LiF scintillator, which can be used to detect EAS neutrons and to monitor the neutron background near nuclear setups, is given. To evaluate the efficiency of this detector, its model was created by using the Geant4 toolkit. The included physical processes of neutron interaction and propagation were verified by using the code Serpent as a standard. The simulations of neutron propagation in water, concrete, and air were carried out. Processing of the neutron propagation results allows to select the model QGSP_BIC_HP as giving the best agreement with Serpent.