Properties Simulation of Gd-Coated Resistive Plate Chambers Thermal Neutron Detector

The sensitivities to γ-ray and neutron were simulated by MCNP and Garfield programs for the Gd-coated resistive plate chambers thermal neutron detector. The electron energy spectra produced by the detector interacting with the thermal neutron and 1.25 MeV γ-ray were also given. At last, the relationship between the time resolution and the detection efficiency with the electric field and the proportion of the mixture gas were calculated. By using the simulating data, the optimal electric field and the proportion of the mixture were presented.