Neutron gas scintillation imager with glass capillary plate
2019
Abstract A glass capillary plate (CP) is one of the attractive candidates for a hole-type micropattern gaseous detector (MPGD). We have developed a neutron gas scintillation imager (n-GSI) that consists of a CPGD with a thin-layer neutron converter, a mirror, lens optics, an imaging intensifier unit, and CMOS camera system. To obtain the high spatial resolution, we investigated a new CPGD that the distance between the converter and the surface of the CP was set to close to 0 μ m . The performance of this neutron imager was investigated using neutron beams at beamline CN-3 of the Kyoto University Reactor. We successfully restricted the tracks of charged particles produced by the interaction between neutrons and 10B to within the hole of a capillary. The effective spatial resolution of the n-GSI was evaluated to be 80 μ m with the neutron image of the Gd test chart.
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