Composite gamma-neutron detection system

A system for detection of neutrons and gamma rays, comprising:

• a screen comprising a thermal neutron absorber material, said material interacting with neutrons to emit heavy particles;
• a plastic scintillator into which said screen is embedded, said plastic scintillator producing light on interaction with said heavy particles;
• at least one photodetector which collects the produced light and converts the light to a measurable signal, and
• a Pulse-Shape Discrimination (PSD) circuit that separates the neutron and gamma-ray events measured by the at least one photodetector.

A gamma-neutron detector, comprising:

• a first gamma-sensitive scintillation panel;
• a second gamma-sensitive scintillation panel;
• and
• a neutron detector, wherein said neutron detector is positioned between the first gamma-sensitive scintillation panel and the second gamma-sensitive scintillation panel.

A system for detection of neutrons and gamma rays, comprising:

• a plurality of scintillator screens comprising thermal neutron absorber materials, said materials interacting with neutrons to emit heavy particles, and said heavy particles interacting with scintillator screens to produce light,
• a plurality of light guides into which said scintillator screens are embedded, said light guides serving as a neutron moderating medium,
• a first photodetector which receives the produced light through said light guides, and converts the light to a measurable signal,
• a plastic scintillator producing light on interaction with gamma-rays,
• a reflector placed between said plastic scintillator and said scintillator screens to prevent cross-contamination between optical signals from the neutron and gamma detection materials, and
• a second photodetector which collects the produced light from said plastic scintillator, and converts the light to a measurable signal.