System, method, and apparatus for detecting neutrons

A neutron detector, comprising:

• a scintillator based neutron detection assembly including a reflector portion having an inner reflective layer, a plurality of optical fibers, and a scintillator portion, wherein said optical fibers are positioned between said inner reflective layer and said scintillator portion;
• a fiber guide connected with an end of said scintillator based neutron detection assembly, wherein at least one bundle of optical fibers from said plurality of optical fibers is positioned in an output port of said fiber guide;
• a sensor assembly connected with an end of said fiber guide such that at least one photo responsive input of a photomultiplier tube is aligned with said at least one bundle of fibers in said output port;
• and
• an output port connected with said sensor assembly configured to generate an output signal in response to a neutron event.

A neutron detector, comprising:

• a scintillator based neutron detection assembly including a reflector portion having an inner reflective layer, a plurality of optical fibers, and a scintillator portion, wherein said optical fibers are positioned between said inner reflective layer and said scintillator portion;
• a fiber guide connected with an end of said scintillator based neutron detection assembly, wherein a first alternating half of said plurality of optical fibers is oriented in a first bundle and positioned in a first output port of said fiber guide and a second alternating half of said plurality of optical fibers is oriented in a second bundle and positioned in a second output port of said fiber guide;
• a sensor assembly connected with a proximal end of said fiber guide such that a first photo responsive input of at least one photomultiplier tube is aligned with a first end of said first bundle in said first output port and a second photo responsive input of said at least one photomultiplier tube is aligned with a second end of said second bundle in said second output port;
• and
• an output port connected with said sensor assembly configured to generate an output signal in response to a neutron event.