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Evaluation of energy deposition calculational methods in the JOYO fast reactor

Sekine, Takashi ; David, W.*; Aoyama, Takafumi 

This study describes methods for performing whole-core detailed energy deposition calculations for the "JOYO" MK-III core using MCNP and compares MCNP results with core management method results for deposited power, total flux, and fast flux by subassembly. Methods include heterogeneous geometry modeling with prescriptions to account for the generation, transport, and eventual deposition of the prompt and delayed neutron, $$gamma$$ ray, and charged particle energy contributions. Sensitivity of the calculated values to the nuclear data was evaluated by comparing results with cross section libraries based on the nuclear data sets ENDF/B-VI, JENDL-3.3, and JENDL-3.2.

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