Development of a PSF-detector for contaminated areas

Abstract

Hitachi-GE Nuclear Energy, Ltd. has developed the Dose rate meter called "D-phod (Detector for photon dose)" using fiber optics as a radiation sensor to figure out the dose rate of Fukushima area which is contaminated by radioactive materials. D-phod is a tool that can rapidly measure linear or curved dose rate up to 20m along fiber optics. Element technology has already established, however, existing measurement system is unfit to measure environmental dose rate. Therefore, we improved it to be able to be used as a survey meter and completed D-phod. It enables to measure a wide range of environment reasonably. In this paper, we report the development of D-phod which solved the problems mentioned above and can be put into practical use.