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Report No.

Establishment of high energy $$gamma$$-ray calibration field at the FRS of JAEA

Kowatari, Munehiko; Tanimura, Yoshihiko   ; Tsutsumi, Masahiro; Kawasaki, Katsuya ; Yoshizawa, Michio  

A 6-7 MeV high energy $$gamma$$-ray field is to be established as a calibration field for radiation protection instruments at the Facility of Radiation Standards (FRS) of Japan Atomic Energy Agency (JAEA). This calibration field is essential to measure dose rates in accurate due to $$gamma$$-rays which are observed around BWRs. The $$gamma$$-ray field has been produced through the reaction of $$^{19}$$F(p,$$alpha$$$$gamma$$)$$^{16}$$O reaction using the accelerator. For establishing the calibration field, there are some difficulties to overcome which are caused by its $$gamma$$-ray energy. In the presentation, these difficulties will be presented and discussions concerning the establishment of the high energy $$gamma$$-ray calibration field will be made.



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