On the use of different analytical solutions for recalculation of the YALINA-Booster experiment SC3A

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• 作者：B. Merk^a ; ^{b.merk@hzdr.de} ; V. Glivici-Cotru牛膬^a ; F.P. Weiß ; ^b
• 关键词：YALINA-Booster ; Experimental analysis ; Analytic solutions
• 刊名：Progress in Nuclear Energy
• 出版年：2012
• 期刊代码：42_01491970
• 类别：pw
• 出版时间：July, 2012
• 卷：58
• 期：Complete
• 页码：11-20
• 文件大小：1686 K

摘要

The SC3A experiment in the YALINA-Booster facility in Belarus is described and investigated. For this investigation the very special configuration of YALINA-Booster core, consisting of a fast and a thermal zone, decoupled with a neutron 鈥榲alve鈥?is analyzed in detail based on a full HELIOS model for the calculations. The two region design causes unexpected results in the experiments. The special problems for the analysis of the experiments are shown. The results for different analytical solution (one group diffusion, one group P₁ transport and two group diffusion) are analyzed and compared. To model the streaming of neutrons from the thermal area into the fast area, a special two group analytical solution for the space-time dependent neutron flux with two sources is developed from the available Green鈥檚 functions for two groups. The new analytical solutions show very good agreement in the comparison with the experimental results. Especially, with the two group and two source solution the unexpected behavior at the outermost detector can be reproduced. Thus analytical solutions without separation of space and time are a very promising tool to develop a new method for the analysis of ADS experiments.