A Novel Plastic Optical Fibre-Based Scintillator Detector's Response in Neutron Irradiation up to 400 MeV

A study was carried out to determine if a novel, millimeter sized Terbium-activated Gadolinium Oxysulfide optical fibre detector can detect neutrons from a 0×400 MeV neutron beam. Two different sensor samples with different distributions of scintillator powder were tested. Both responded to the neutron irradiation. The denser sample was then explored to measure the vertical profile of the neutron beam. This demonstrates that the sensor can be used to detect neutrons.