Calculations of neutron shielding data for 10-100 MeV proton accelerators.
Calculations of neutron shielding data for 10-100 MeV proton accelerators.
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10-100 MeV 质子加速器的中子屏蔽数据计算。
DOI：
10.1093/rpd/nci193
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发表时间：
2005
影响因子：
1
通讯作者：
S. Jian
中科院分区：
文献类型：
--
作者：
C. C. Chen;R. Sheu;S. Jian
详细研究了能量为10 ~ 100 MeV的质子轰击C、N、Al、Fe、Cu和W等靶材料时的中子源特性及其在混凝土中的衰减。采用了两步方法：首先计算厚靶双微分中子产额的（p，xn）截面ICRU报告63中推荐的，进一步，这些中子在混凝土中的输运模拟进行了使用FLUKA蒙特卡罗代码。本研究的目的是为10-100 MeV质子加速器的屏蔽设计提供合理准确的参数。给出了几种靶材料的源项和相应的衰减长度随质子能量和中子发射角的变化关系。
The characteristics of neutron sources and their attenuation in concrete were investigated in detail for protons with energies ranging from 10 to 100 MeV striking on target materials of C, N, Al, Fe, Cu and W. A two-step approach was adopted: thick-target double-differential neutron yields were first calculated from the (p, xn) cross sections recommended in the ICRU Report 63; further, transport simulations of those neutrons in concrete were performed by using the FLUKA Monte Carlo code. The purpose of this study is to provide reasonably accurate parameters for shielding design for 10-100 MeV proton accelerators. Source terms and the corresponding attenuation lengths in concrete for several target materials are given as a function of proton energies and neutron emission angles.