GEANT4 simulations of the n_TOF spallation source and their benchmarking
GEANT4 simulations of the n_TOF spallation source and their benchmarking
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n_TOF 散裂源的 GEANT4 模拟及其基准测试
DOI：
10.1140/epja/i2015-15160-6
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
The nTOF Collaboration
中科院分区：
文献类型：
--
作者：
S. Lo Meo;M. Cortés;C. Massimi;J. Lerendegui;M. Barbagallo;N. Colonna;C. Guerrero;D. Mancusi;F. Mingrone;J. Quesada;M. Sabate;G. Vannini;V. Vlachoudis;The nTOF Collaboration
摘要：用GEANT4模拟了欧洲核子研究中心n_TOF装置散裂靶中中子的产生和输运。用不同的高能核子-核相互作用模型得到的结果与在第一个实验区测量的中子束的测量特性，特别是通量及其对中子能量的依赖关系进行了比较。目前，在从热到1GeV的整个能量范围内，通量绝对值的绝对值在20%以内，能量依赖关系在几个百分点以内，INCL++模型与GEANT4自然去激发模型的耦合得到了最好的一致性。所有其他可用的模型都高估了nTOF中子通量，高估了一个更大的因素，高达70%。模拟还能够准确地再现中子束能量分辨函数，该函数基本上由靶/慢化剂组件内的慢化时间决定。本文报道的结果为使用GEANT4模拟散裂中子源提供了信心。
Abstract.Neutron production and transport in the spallation target of the n_TOF facility at CERN has been simulated with GEANT4. The results obtained with different models of high-energy nucleon-nucleus interaction have been compared with the measured characteristics of the neutron beam, in particular the flux and its dependence on neutron energy, measured in the first experimental area. The best agreement at present, within 20% for the absolute value of the flux, and within few percent for the energy dependence in the whole energy range from thermal to 1 GeV, is obtained with the INCL++ model coupled with the GEANT4 native de-excitation model. All other available models overestimate by a larger factor, of up to 70%, the n_TOF neutron flux. The simulations are also able to accurately reproduce the neutron beam energy resolution function, which is essentially determined by the moderation time inside the target/moderator assembly. The results here reported provide confidence on the use of GEANT4 for simulations of spallation neutron sources.
影响因子：
2.7
作者：
Guerrero, C.;Tsinganis, A.;Zugec, P.
通讯作者：
Zugec, P.
DOI：
10.1140/epja/i2013-13156-x
发表时间：
2013-12
期刊：
The European Physical Journal A
影响因子：
--
作者：
M. Barbagallo;C. Guerrero;A. Tsinganis;D. Tarrío;S. Altstadt;S. Andriamonje;J. Andrzejewski;L. Audouin
通讯作者：
M. Barbagallo;C. Guerrero;A. Tsinganis;D. Tarrío;S. Altstadt;S. Andriamonje;J. Andrzejewski;L. Audouin