Development of the Small Size ZnS(Ag) Scintillator Sensor for Detection of Alpha Particles

Some facilities such as hot-cell are very high radiation level, so it is difficult to approach for radiation monitoring. In this case the detector system is preferable to separate the sensor and electronics, which have to locate in the facility outside to avoid the electric noise and worker's exposure. In this study the detector system applicable to the high-level radioactive contamination of the narrow gap of the installations in the nuclear facilities was developed. The radiation sensor was prepared using a transparent epoxy resin and an inorganic scintillator. The epoxy resin has been used in a wide application field by advantages such as reaction-constriction is very small and no volatility during the hardening process, easiness to manufacture and a high transparency. For signal transmission of the scintillation the optical fiber was used and the epoxy resin easily combined with an optical fiber