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首页> 外文期刊>Nuclear Engineering and Design >Calculation of the neutron importance and weighted neutron generation time using MCNIC method in accelerator driven subcritical reactors
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Calculation of the neutron importance and weighted neutron generation time using MCNIC method in accelerator driven subcritical reactors

机译:使用MCNIC方法计算加速器驱动的亚临界反应堆中子的重要性和加权中子产生时间

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摘要

The difference between non-weighted neutron generation time (Λ) and the weighted one (Λ~†) can be quite significant depending on the type of the system. In the present work, we will focus on developing MCNIC method for calculation of the neutron importance (Φ ~†) and importance weighted neutron generation time (Λ~†) in accelerator driven systems (ADS). Two hypothetic bare and graphite reflected spallation source driven system have been considered as illustrative examples for this means. The results of this method have been compared with those obtained by MCNPX code. According to the results, the relative difference between Λ and Λ~† is within 36% and 24,840% in bare and reflected illustrative examples respectively. The difference is quite significant in reflected systems and increases with reflector thickness. In Conclusion, this method may be used for better estimation of kinetic parameters rather than the MCNPX code because of using neutron importance function.
机译:取决于系统的类型,非加权中子生成时间(Λ)和加权中子生成时间(Λ〜†)之间的差异可能非常明显。在当前的工作中,我们将专注于开发MCNIC方法来计算加速器驱动系统(ADS)中的中子重要性(Φ〜†)和重要性加权中子产生时间(Λ〜†)。两个假想的裸露和石墨反射的散裂源驱动系统已被视为该方法的说明性示例。该方法的结果已与通过MCNPX代码获得的结果进行了比较。根据结果​​,在裸露的示例和反射的示例中,Λ和Λ〜†之间的相对差分别在36%和24,840%之内。差异在反射系统中非常明显,并随反射器厚度的增加而增加。总之,由于使用了中子重要性函数,因此该方法可能比MCNPX代码可用于更好地估计动力学参数。

著录项

  • 来源
    《Nuclear Engineering and Design》 |2013年第9期|404-408|共5页
  • 作者单位

    Nuclear Science & Technology Research Institute, AEOI, Tehran, Islamic Republic of Iran;

    Department of Radiation Application, Shahid Beheshti University, G.C., Tehran, Islamic Republic of Iran;

    Nuclear Science & Technology Research Institute, AEOI, Tehran, Islamic Republic of Iran;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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