DiffMod–中子传播和慢化的统计2D模拟模型

IF 1 Q3 NUCLEAR SCIENCE & TECHNOLOGY
U. Rücker, P. Zakalek, Jingjing Li, J. Voigt, T. Gutberlet, T. Brückel
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引用次数: 0

摘要

DiffMod是一个基于扩散、散射、缓和和吸收过程的统计描述的模拟程序,用于模拟脉冲中子源的热靶-慢化剂-反射器组件中中子系综的演化。空间分辨率、能量分辨率和扩散方向都受到严格限制,以使实际减震器-反射器组件的计算时间低于1小时。与蒙特卡罗模拟相比,我们证明了DiffMod方法可以提供的强度和脉冲形状精确到蒙特卡罗模拟的10%以内,而蒙特卡罗模拟需要更多的计算能力。此外,还提供了中子在不同能级上空间分布的时间分辨图。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
DiffMod – statistical 2D simulation model of neutron propagation and moderation
DiffMod is a simulation program for the evolution of a neutron ensemble in a thermal target – moderator – reflector assembly of a pulsed neutron source based on the statistical description of diffusion, scattering, moderation, and absorption processes. The spatial resolution, the energy resolution and the diffusion directions are strongly restricted to achieve calculation times in a realistic moderator – reflector assembly below 1 hour. In comparison with Monte-Carlo simulations describing the geometry and interactions between neutrons and moderator material exactly, we prove that the DiffMod approach can deliver intensities and pulse shapes that are exact within 10% compared to the Monte-Carlo simulations that require much more computing power. In addition, a time-resolved illustration of the spatial distribution of the neutrons at different energy levels is provided.
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来源期刊
Journal of Neutron Research
Journal of Neutron Research NUCLEAR SCIENCE & TECHNOLOGY-
CiteScore
2.30
自引率
9.10%
发文量
23
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