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Nuclear characteristics evaluation for a supercritical experiment facility using low-enriched uranium solution fuel, TRACY

低濃縮ウラン溶液燃料を使用した超臨界実験施設TRACYの核特性評価

中島 健

Nakajima, Ken

TRACYの実験データを用いて、臨界量,$$beta$$$$_{eff}$$/$$Lambda$$比,ピーク出力,パルスのエネルギーといった核特性量の評価を行った。TRACYは、低濃縮の硝酸ウラニル水溶液を燃料とする超臨界炉であり、同装置により再処理施設のような核燃料処理施設における臨界事故を模擬できる。本評価では、臨界計算及び出力・エネルギーを評価するためのモデルの適用性について検討した。

The nuclear characteristics of TRACY, such as the criticality, the $$beta$$$$_{eff}$$/$$Lambda$$ ratio, the peak power, the energy of pulse, and the total energy, have been evaluated using the experimental data. TRACY is a supercritical reactor fueled with low-enriched uranyl nitrate aqueous solution to simulate criticality accidents in a fuel processing facility, such as a spent-fuel reprocessing plant. In this evaluation, the availability of criticality calculation and the models to evaluate the power and energy have been studied.

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