Attenuation length of high energy neutrons through a thick concrete shield measured by activation detectors at CHARM
Attenuation length of high energy neutrons through a thick concrete shield measured by activation detectors at CHARM
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CHARM 的激活探测器测量高能中子穿过厚混凝土屏蔽层的衰减长度
DOI：
10.1080/00223131.2020.1751740
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发表时间：
2020
影响因子：
1.2
通讯作者：
A. Infantino
中科院分区：
文献类型：
--
作者：
N. Nakao;T. Sanami;T. Kajimoto;E. Iliopoulou;R. Froeschl;M. Brugger;S. Roesler;A. Infantino
在CERN高能加速器混合场（CHARM）装置上进行了深穿透屏蔽实验。质子（24 GeV/c）被注入到一个50厘米厚的铜靶，释放的中子通过一个位于靶垂直向上的大块混凝土屏蔽，在那里它们被测量铋和铝激活探测器放置在不同的穿透距离的屏蔽。根据活化探测器中放射性核素的产生率，得到了~（209）Bi（n，xn）~（210-x）Bi（x = 4-9）和~（27）Al（n，α）~（24）Na反应在混凝土屏蔽层中的衰减分布。高能中子通过普通混凝土的衰减长度估计为120 g/cm 2，与粒子和重离子传输系统（PHITS）代码中使用简单平板作为通用几何形状的Monte Carlo模拟结果非常一致。用PHITS程序模拟了衰减长度与质子能量的关系，并与已发表的数据进行了比较。
ABSTRACT A deep-penetration shielding experiment was performed at the CERN High-energy AcceleRator Mixed-field (CHARM) facility. The protons (24 GeV/c) were injected into a 50-cm-thick copper target and the released neutrons were transmitted through a bulk concrete shield located vertically upward from the target, where they were measured with bismuth and aluminum activation detectors placed at various penetration distances in the shield. From the radionuclide production rate in the activation detectors, the attenuation profiles through the concrete shield were obtained for the reactions of 209Bi(n,xn)210-x Bi(x = 4–9) and 27Al(n,α)24Na. The attenuation length of the high-energy neutrons through ordinary concrete was estimated as 120 g/cm2, in good agreement with Monte Carlo simulations using simple slabs as a universal geometry implemented in Particle and Heavy Ion Transport System (PHITS) code. Proton energy dependence of attenuation length was also investigated with simulations by PHITS code and comparisons with the published data were discussed.
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影响因子：
1.2
作者：
Iwamoto, Yosuke;Sato, Tatsuhiko;Niita, Koji
通讯作者：
Niita, Koji
厚铜靶上 120 GeV 质子诱发反应的中子飞行时间测量方法
DOI：
--
发表时间：
2012
期刊：
Nuclear Instruments and Methods
影响因子：
--
作者：
T. Sanami;et. al.
通讯作者：
et. al.
JASMIN：日美介子相互作用和中子探测研究
DOI：
--
发表时间：
2011
期刊：
OECD Document, Proc.on the 10th Task Force on Shielding Aspects of Accelerators, Targets and Irradiation Facilities (SATIF)
影响因子：
--
作者：
H.Nakashima;et.al.
通讯作者：
et.al.
使用 NE213 闪烁体通过展开方法再现中子注量
DOI：
10.1016/j.nima.2018.07.079
发表时间：
2018
期刊：
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
影响因子：
--
作者：
Kajimoto Tsuyoshi;Sanami Toshiya;Nakao Noriaki;Froeschl Robert;Roesler Stefan;Iliopoulou Elpida;Infantino Angelo;Brugger Markus;Tanaka Kenichi;Endo Satoru
通讯作者：
Endo Satoru
(p)ppGpp 合成以及代谢酶 SpoT 控制环脂肽的产生
DOI：
--
发表时间：
2010
期刊：
影响因子：
--
作者：
鷲尾健司;Siew Ping Lim;Niran Roongsawang;森川正章
通讯作者：
森川正章