Measurement of spatial distribution of neutrons and gamma rays for BNCT using multi-imaging plate system

Quality assurance of the spatial distributions of neutrons and gamma rays was tried using imaging plates (IPs) and converters to enhance the beam components in the epithermal neutron mode of the Kyoto University Reactor. The converters used were 4 mm thick epoxy resin with B4C at 6.85 weight-percent (wt%) 10B for epithermal neutrons, and 3 mm thick carbon for gamma rays. Results suggested that the IP signal does not need a sensitivity correction regardless of the incident radiation that produces it.