Arrangement of high-energy neutron irradiation field and shielding experiment using 4 m concrete at KENS.
Arrangement of high-energy neutron irradiation field and shielding experiment using 4 m concrete at KENS.
复制标题
KENS高能中子辐照场布置及4 m混凝土屏蔽实验。
DOI：
10.1093/rpd/nci013
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发表时间：
2005
影响因子：
1
通讯作者：
A. Maruhashi
中科院分区：
文献类型：
--
作者：
N. Nakao;H. Yashima;M. Kawai;K. Oishi;H. Nakashima;K. Masumoto;H. Matsumura;S. Sasaki;M. Numajiri;T. Sanami;Q. Wang;A. Toyoda;K. Takahashi;K. Iijima;K. Eda;S. Ban;H. Hirayama;S. Muto;T. Nunomiya;S. Yonai;D. R. Rasolonjatovo;K. Terunuma;K. Yamauchi;P. Sarkar;E. Kim;T. Nakamura;A. Maruhashi
在KENS散裂中子源装置上，设置了500 MeV质子轰击厚钨靶后产生的高能中子正向辐照场。在该设施中，屏蔽实验是在辐射室内组装一个4 m厚度的普通混凝土屏蔽，距离目标中心下游2.5 m。将铋、铝、铟和金的激活探测器插入到屏蔽内部的八个槽中，并通过测量激活探测器发出的伽马射线获得中子反应速率的衰减。对火星14号的蒙特卡罗模拟也进行了精确到热能的模拟，计算和测量结果之间的比较表明，两者的一致性在3倍之内。该中子场可用于高能中子对材料的屏蔽、活化和辐射损伤的研究，实验数据可用于验证传输和活化计算程序的准确性。
An irradiation field of high-energy neutrons produced in the forward direction from a thick tungsten target bombarded by 500 MeV protons was arranged at the KENS spallation neutron source facility. In this facility, shielding experiment was performed with an ordinary concrete shield of 4 m thickness assembled in the irradiation room, 2.5 m downstream from the target centre. Activation detectors of bismuth, aluminium, indium and gold were inserted into eight slots inside the shield and attenuations of neutron reaction rates were obtained by measurements of gamma-rays from the activation detectors. A MARS14 Monte Carlo simulation was also performed down to thermal energy, and comparisons between the calculations and measurements show agreements within a factor of 3. This neutron field is useful for studies of shielding, activation and radiation damage of materials for high-energy neutrons, and experimental data are useful to check the accuracies of the transmission and activation calculation codes.
KENS 屏蔽实验(1)：使用活化箔和成像板技术测量混凝土屏蔽侧面的中子空间分布
DOI：
--
发表时间：
2004
期刊：
J.Nucl.Sci.Technol. Suppl.4
影响因子：
--
作者：
Q.Wang;K.Masumoto et al.
通讯作者：
K.Masumoto et al.
在 KENS 500 MeV 中子辐照设施中使用金的放射性散裂产物估计高能神经元的特性
DOI：
--
发表时间：
2005
期刊：
Radiation Protection Dosimetry 116
影响因子：
--
作者：
Hiroshi Matsumura et al.;Hiroshi Matsumura et al.
通讯作者：
Hiroshi Matsumura et al.