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首页> 外文会议>International Symposium on Fusion Nuclear Technology(ISFNT-7) pt.B >Effect of activation cross-section uncertainties on the radiological assessment of the MFE/DEMO first wall
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Effect of activation cross-section uncertainties on the radiological assessment of the MFE/DEMO first wall

机译：活化横截面不确定性对MFE /演示第一墙放射学评估的影响

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A Monte Carlo procedure has been applied in this work in order to address the impact of activation cross-sections (XS) uncertainties on contact dose rate and decay heat calculations for the outboard first wall (FW) of a magnetic fusion energy (MFE) demonstration (DEMO) reactor. The XSs inducing the major uncertainty in the prediction of activation related quantities have been identified. Results have shown that for times corresponding to maintenance activities the uncertainties effect is insignificant since the dominant XSs involved in these calculations are based on accurate experimental data evaluations. However, for times corresponding to waste management/recycling activities, the errors induced by the XSs uncertainties, which in this case are evaluated using systematic models, must be considered. It has been found that two particular isotopes, ~(60)Co and ~(94)Nb, are key contributors to the global DEMO FW activation uncertainty results. In these cases, the benefit from further improvements in the accuracy of the critical reaction XSs is discussed.
机译：在这项工作中应用了蒙特卡罗程序，以解决激活横截面（Xs）不确定性对磁融合能量（MFE）演示的舷外第一壁（FW）的接触剂量率和衰减热计算的影响（演示）反应堆。已经确定了在预测激活相关数量中引起主要不确定性的XS。结果表明，对于对应于维护活动的时间，由于这些计算中涉及的主要XSS基于准确的实验数据评估，因此不确定的效果是微不一眼的。然而，对于对应于废物管理/回收活动的时间，必须考虑使用系统模型评估在这种情况下的XSS不确定性引起的误差。已经发现，两个特定的同位素，〜（60）CO和〜（94）NB是全球演示FW激活不确定性结果的关键贡献者。在这些情况下，讨论了从临界反应XSS的准确性的进一步改进的益处。

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