Thermal neutrons detection module capable of electron and gamma-separation and background suppression

The modeling of the registration of thermal neutrons by Si planar detector with natural metallic Gd neutron converter and gamma background suppression was performed. The responses of Si planar detector in different ways were calculated. Spectra dependence consisted of the spectra conversion electrons in energy range 30...200 keV with maximum at energy 70 keV and Gd CXR lines were received. Background gamma radiation was suppressed by two detectors data subtraction. The programs were designed using C + + and function under execution control of OS Red Hat LINUX 6.2 FEDORA by free code GEANT 4.8.2 usage.