The Neutrons for Science Facility at SPIRAL-2

The Neutrons for Science Facility at SPIRAL-2
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SPIRAL-2 科学设施中子

DOI:
10.1016/j.nds.2014.08.097
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发表时间:
2014
影响因子:
3.7
通讯作者:
Ledoux X
Ledoux X
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Ledoux X

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在基础研究和应用中,许多领域都需要研究能量从几MeV到几十MeV的中子引起的反应。可靠的测量也是必要的,以改善核运输守则所使用的评价数据库。这个能量范围涵盖了大量的主题,如核废料的嬗变,未来裂变和聚变反应堆的设计,核医学或新探测器的测试和开发。为此目的,正在卡昂(法国)的GANIL站点上建造一个名为“科学中子”(NFS)的新设施。NFS由用于飞行时间测量的脉冲中子束设施和用于截面测量的辐照站组成。中子将通过由螺旋-2直线加速器提供的氘核和质子束的相互作用产生,其中厚或薄的转换器由铍或锂制成。连续和准单能谱将在NFS高达40 MeV。在这个快能区,中子通量预计将比其他现有的飞行时间设施高出2个数量级。此外,中子、质子和氘诱发反应辐照站将允许利用活化技术进行截面测量。在介绍了该设施及其特点之后,将介绍拟在短期和中期内进行的实验。
Numerous domains, in fundamental research as well as in applications, require the study of reactions induced by neutrons with energies from few MeV up to few tens of MeV. Reliable measurements also are necessary to improve the evaluated databases used by nuclear transport codes. This energy range covers a large number of topics like transmutation of nuclear waste, design of future fission and fusion reactors, nuclear medicine or test and development of new detectors. A new facility called Neutrons For Science (NFS) is being built for this purpose on the GANIL site at Caen (France). NFS is composed of a pulsed neutron beam for time-of-flight facility as well as irradiation stations for cross-section measurements. Neutrons will be produced by the interaction of deuteron and proton beams, delivered by the SPIRAL-2 linear accelerator, with thick or thin converters made of beryllium or lithium. Continuous and quasi-mono-energetic spectra will be available at NFS up to 40 MeV. In this fast energy region, the neutron flux is expected to be up to 2 orders of magnitude higher than at other existing time-of-flight facilities. In addition, irradiation stations for neutron-, proton- and deuteron-induced reactions will allow performing cross-section measurements by the activation technique. After a description of the facility and its characteristics, the experiments to be performed in the short and medium term will be presented.
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