[2I01-07] Gamma-ray Measurement or Its Combination

[2I05] Development of a directional detector FRIE for omni-directional measurement of radiation 3

the characteristic test using β- and γ-ray source and the field measurement of the FRIE detector

*Tatsuo Torii^1,2, Yuki Abe^3,4, Miyuki Sasaki⁴, Yukihisa Sanada⁴ (1. Fukushima University, 2. University of Fukui, 3. Hirosaki University, 4. JAEA)

Keywords:Radiation Imaging, Measurement of Beta and Gamma Rays, Omni-directional Measurement, Fractal Geometry

We are now developing a radiation detector in the Sierpinski's tetrahedron shape, which is a fractal shape of self-similarity. The tetrahedral radiation sensor is a unit of 16 GAGG scintillators arranged in a Sierpinski tetrahedron shape and filled with heavy metal between the sensors. Although the total count rates of the 16 scintillators are almost the same for the incident direction, the count rates of the individual scintillators can be used to identify the incident direction of the radiation. In this presentation, we will report the results of the characteristic test and field measurement of the newly developed instrument based on the previous presentation at the AESJ conference.