Fission matrix based Monte Carlo criticality calculations

Jan Dufek; Waclaw Gudowski

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Fission matrix based Monte Carlo criticality calculations

机译：基于裂变矩阵的蒙特卡洛临界度计算

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We have described a fission matrix based method that allows to cancel the inactive cycles in Monte Carlo criticality calculations. The fission matrix must be sampled in the course of the Monte Carlo calculation using a space mesh with sufficiently small zones as it causes the fission matrix be insensitive to errors in the initial fission source. The K_(eff) and other quantities can be derived by means of the final fission matrix. The confidence interval for the K_(eff) estimate can be conservatively determined via the variance in the fission matrix.

机译：我们已经描述了一种基于裂变矩阵的方法，该方法可以消除蒙特卡洛临界计算中的非活动周期。裂变矩阵必须在蒙特卡洛计算过程中使用具有足够小的区域的空间网格进行采样，因为这会导致裂变矩阵对初始裂变源的误差不敏感。 K_（eff）和其他数量可以通过最终裂变矩阵得出。可以通过裂变矩阵的方差保守地确定K_（eff）估计的置信区间。

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来源
《Annals of nuclear energy》 |2009年第8期|1270-1275|共6页
作者
Jan Dufek; Waclaw Gudowski;
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作者单位

Royal Institute of Technology, Department of Reactor Physics, AtbaNova University Center, 10691 Stockholm, Sweden;

Royal Institute of Technology, Department of Reactor Physics, AtbaNova University Center, 10691 Stockholm, Sweden;

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Fission matrix based Monte Carlo criticality calculations

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