[2H11-15] Non-destructive Inspection

[2H14] Non-destructive Evaluation of Activation in PET-cyclotron using Activation Imaging Technique

*Kiyokazu Tsugane¹, Go Yoshida¹, Hiroshi Matsumura¹, Akihiro Toyoda¹, Kazuyoshi Masumoto¹, Hajime Nakamura¹, Taichi Miura¹, Iwane Koumura², Masahiko Kozaki³, Ayumi Yamamoto³ (1. KEK, 2. Sumitomo Heavy Industries, 3. ATEX)

Keywords:Activation Imaging, GeGI5, PET-cyclotron

Using the portable gamma-ray imaging device "GeGI5," we conducted activation imaging of a PET-cyclotron. At the beam port, the target-unit and the Havar-foil for the beam window were removed step by step to quantify the type and radioactivity of radionuclides in each component. From the changes in the activation imaging results, it was estimated that at the end of the cyclotron operation, the target unit was activated at ^{110 m}Ag, ⁵⁴Mn, mainly at ⁵⁶Co (2.36 MBq), and the Havar-foil was activated at ⁵⁸Co, mainly at ⁵⁶Co (7.54 MBq). It was found that GeGI5 can not only visualize activation, but also evaluate radionuclides and their radioactivity simultaneously in a short time and non-destructively.