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Report No.

Neutronic characteristics of lead-bismuth in KUCA A core for accelerator-driven system

Sugawara, Takanori  ; Oizumi, Akito   ; Kitamura, Yasunori; Iwamoto, Hiroki   ; Yagi, Takahiro*; Pyeon, C. H.*

The Japan Atomic Energy Agency (JAEA) has investigated the accelerator-driven system (ADS) to transmute minor actinides discharged from nuclear power plants. The ADS investigated by JAEA is a lead bismuth eutectic (LBE) cooled-tank-type ADS. It has been known that there was a major upgrade for the cross section data of lead isotopes from JENDL-3.3 to JENDL-4.0. Due to this upgrade, the value of $$k_{eff}$$ of the core was significantly changed, from 0.97 calculated by JENDL-3.3 to 1.00 calculated by JENDL-4.0. The difference was mainly caused by the cross section data of the lead isotopes from JENDL-3.3 to JENDL-4.0. This study aims to measure sample worth reactivity from aluminum plates to lead or LBE ones to validate the nuclear data of lead and bismuth isotopes.



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