Antineutrino flux and spectrum calculation for spent nuclear fuel for the Daya Bay antineutrino experiment

doi:10.1016/j.nuclphysa.2017.06.009

	Antineutrino flux and spectrum calculation for spent nuclear fuel for the Daya Bay antineutrino experiment
	Zhong, WL; Chen, YX; Zhao, YF; Ma, XB; Zhong WL(钟玮丽); An, FP
刊名	NUCLEAR PHYSICS A
	2017
卷号	966 页码:294-305
关键词	Reactor neutrino experiment Uncertainties analysis Spent fuel
ISSN号	0375-9474
DOI	10.1016/j.nuclphysa.2017.06.009
文献子类	Article
英文摘要	The antineutrino flux from spent nuclear fuel (SNF) is an important source of uncertainty when making estimates of a reactor neutrino flux. However, to determine the contribution from SNF, sufficient data is needed such as the amount of spent fuel in the pool, the time after discharged from the reactor core, the burnup of each assembly, and the antineutrino spectrum of each isotope in the SNF. A method to calculate this contribution is proposed. A reactor simulation code verified against experimental data has been used to simulate fuel depletion by taking into account more than 2000 isotopes and fission products, the quantity of SNF in each of the six spent fuel pools, and the time variation of the antineutrino spectra after SNF discharging from the core. Results show that the SNF contribution to the total antineutrino flux is about 0.26%-0.34%, and the shutdown impact is about 20%. The SNF spectrum alters the softer part of the antineutrino spectra, and the maximum contribution from the SNF is about 3.0%. Nevertheless, there is an 18% difference between the line evaluate method and under evaluate method. In addition, non-equilibrium effects are also discussed, and the results are compatible considering the uncertainties. (C) 2017 Elsevier B.V. All rights reserved.
电子版国际标准刊号	1873-1554
WOS关键词	THETA(13)
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000411536200019
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/284265]
专题	高能物理研究所_实验物理中心高能物理研究所_粒子天体物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Zhong, WL,Chen, YX,Zhao, YF,et al. Antineutrino flux and spectrum calculation for spent nuclear fuel for the Daya Bay antineutrino experiment[J]. NUCLEAR PHYSICS A,2017,966:294-305.
APA	Zhong, WL,Chen, YX,Zhao, YF,Ma, XB,钟玮丽,&An, FP.(2017).Antineutrino flux and spectrum calculation for spent nuclear fuel for the Daya Bay antineutrino experiment.NUCLEAR PHYSICS A,966,294-305.
MLA	Zhong, WL,et al."Antineutrino flux and spectrum calculation for spent nuclear fuel for the Daya Bay antineutrino experiment".NUCLEAR PHYSICS A 966(2017):294-305.