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首页> 外文期刊>Annals of nuclear energy >Sensitivities of the proton beam current resulting from variations in the source term for a Pb-Bi cooled accelerator driven system with a Pb-Bi Target
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Sensitivities of the proton beam current resulting from variations in the source term for a Pb-Bi cooled accelerator driven system with a Pb-Bi Target

机译：带有Pb-Bi靶的Pb-Bi冷却加速器驱动系统的源项变化引起的质子束电流灵敏度

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摘要

Numerical simulations of a subcritical reactor coupled to a neutron spallation source, 600 MeV protons impinging on a Pb-Bi target, have been performed using the deterministic code system ERANOS. The investigations are focussed on the sensitivity of the subcriticality parameters resulting from variations in the external source term, the same neutron yield per source proton being assumed in each calculation. The analysis is performed using a detailed three-dimensional model representative of the experimental accelerator driven system being designed by Ansaldo. The reactor is based on a pool-type liquid metal fast critical reactor with a thermal output of about 80 MW and has been currently considered with the option of using existing Superphenix MOX fuel (Ansaldo Nucleare, 2001. XADS Pb-Bi cooled eperimental accelerator driven system reference configuration, Summary Report by Division of Ansaldo Energia SpA, ADS 1 SIFX 0500, Rev. 0, June 2001.). In the paper, it is highlighted that for such Pb-Bi cooled systems the proton beam current required in order to obtain the foreseen operational power level is not significantly sensitive to the source characteristics. Clearly, this result is hoped to facilitate the further overall optimisation of the Ansaldo design.
机译：已使用确定性代码系统ERANOS对与中子散裂源耦合的600 MeV质子撞击Pb-Bi目标的亚临界反应堆进行了数值模拟。研究集中在由外部源项变化引起的亚临界参数的敏感性上，每次计算中假定每个源质子的中子产率相同。使用代表Ansaldo设计的实验性加速器驱动系统的详细三维模型进行分析。该反应堆是基于池式液态金属快临界反应堆，其热输出功率约为80 MW，目前已考虑使用现有的Superphenix MOX燃料（Ansaldo Nucleare，2001年。XADSPb-Bi冷却实验性加速器驱动）系统参考配置，由Ansaldo Energia SpA部门汇总的报告，ADS 1 SIFX 0500，修订版0，2001年6月。在本文中，要强调的是，对于这种Pb-Bi冷却系统，为了获得可预见的工作功率水平而需要的质子束电流对源特性并不十分敏感。显然，希望该结果有助于进一步对Ansaldo设计进行整体优化。

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