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首页> 外文期刊>Annals of nuclear energy >A comprehensive study on neutronics of a lead-bismuth eutectic cooled accelerator-driven sub-critical system for long-lived fission product transmutation
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A comprehensive study on neutronics of a lead-bismuth eutectic cooled accelerator-driven sub-critical system for long-lived fission product transmutation

机译：长寿命裂变产物trans变的铅铋共晶冷却加速器驱动亚临界系统的中子学综合研究

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摘要

The aim of this study is to investigate the high-level waste (HLW) transmutation and fissile breeding potentials of a lead-bismuth eutectic (LBE) cooled accelerator-driven system (ADS) for the various configurations (the target radius, R_T = 10-50 cm and the radial thickness of the sub-critical core, δ_(SC) = 50-80 cm) and for the various fuel compositions (the fuel volume fraction, VF_F = 10%, 12%, 15% and 20% and the fissile fraction, FF = 10-24%) under sub-critical condition. The long-lived fission products (LLFPs: ~(99)Tc, ~(129)I and ~(135)Cs nuclides) and the uranium mono carbide (UC) ceramic fuel are considered as the HLW and the fissile fuel, respectively. The neutronic calculations have been performed per the incident proton (1000 MeV) with the high-energy Monte Carlo code MCNPX in coupled neutron and proton mode using the LA 150 library. The numerical results bring out that the case of R_T = 30 cm, δ_(SC) = 80 cm, VF_F = 10% and FF = 23% is the optimum configuration and fuel composition, from the energy gain point of view, and has a high neutronic performance for an effective LLFP transmutation and fissile breeding.
机译：这项研究的目的是研究铅铋共晶（LBE）冷却的加速器驱动系统（ADS）在各种配置下的高放废物（HLW）mut变和裂变繁殖潜能（目标半径R_T = 10 -50 cm，亚临界堆芯的径向厚度δ_（SC）= 50-80 cm），并且对于各种燃料成分（燃料体积分数VF_F = 10％，12％，15％和20％）以及亚临界条件下的裂变分数FF = 10-24％）。长寿命裂变产物（LLFP：〜（99）Tc，〜（129）I和〜（135）Cs核素）和铀一碳化碳（UC）陶瓷燃料分别被视为高放废物和易裂变燃料。使用LA 150库，在中子和质子耦合的状态下，通过高能蒙特卡罗代码MCNPX对每个入射质子（1000 MeV）进行了中子计算。数值结果表明，从能量增益的角度来看，R_T = 30 cm，δ_（SC）= 80 cm，VF_F = 10％和FF = 23％的情况是最佳配置和燃料成分，并且具有高中子性能，可有效进行LLFP trans变和易裂变育种。

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