Development of albedo-Sn transport method to analyze radiation shielding problem.
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概要
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In order to reduce the error and the computer time of the Sn calculation, the albedo-Sn method has been developed considering the albedo boundary treated with the energy-and-angle dependent doubly differential albedos which can be calculated with the one-dimensional transport theory. In this paper, fundamental formulas are described which express the albedo boundary source and flux convergence acceleration with pointwise rebalancing technique. Test calculations were performed for the model which consists of sodium region surrounded by concrete shield. As a result, the present albedo-Sn method could evaluate the neutron flux near the albedo boundary with a good accuracy and with less computer time. The width of overlapping area required for the Sn calculation with the boot-strap method is also discussed.
- 一般社団法人 日本原子力学会の論文
著者
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KAWAI Masayoshi
NAIG Nuclear Research Laboratory, Nippon Atomic Industry Group Co., Ltd.
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HAYASHIDA Yoshihisa
NAIG Nuclear Research Laboratory, Nippon Atomic Industry Group Co., Ltd.
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ITOH Juichiro
NAIG Nuclear Research Laboratory, Nippon Atomic Industry Group Co., Ltd.
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UEMATSU Mikio
NAIG Nuclear Research Laboratory, Nippon Atomic Industry Group Co., Ltd.
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KAWAI Masayoshi
NAIG Nuclear Research Laboratory Nippon Atomic Industry Group Co., Ltd.
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HAYASHIDA Yoshihisa
NAIG Nuclear Research Laboratory Nippon Atomic Industry Group Co., Ltd.
関連論文
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- Energy-space dependent error propagation in Monte Carlo coupling calculation.
- Evaluation of neutron cross section of 27 fission product nuclides important for fast reactor.
- Development of albedo-Sn transport method to analyze radiation shielding problem.
- Applicability of albedo-Sn transport method to analysis of radiation shielding problem.
- Systematics of neutron total cross sections of fission product nuclei and optical model fit.
- Development of general next event surface crossing estimators for Monte Carlo method.
- New efficient albedo Monte Carlo method for neutron streaming analyses.