Real-time source localisation by passive, fast-neutron time-of-flight with organic scintillators for facility-installed applications

Real-time source localisation by passive, fast-neutron time-of-flight with organic scintillators for facility-installed applications
复制标题

通过有机闪烁体的被动快中子飞行时间进行实时源定位,用于设施安装的应用

DOI:
10.1016/j.nima.2021.165094
复制
发表时间:
2021
期刊:
Accelerators, Spectrometers, Detectors and Associated Equipment
影响因子:
--
通讯作者:
Astromskas V
Astromskas V
中科院分区:
--
文献类型:
--
作者:
Astromskas V

文献摘要

参考文献

被引文献

相似文献

快中子飞行时间(ToF)已被用于确定混合辐射场源的位置。两个EJ-309有机稀释器和一个快速的数字数据采集系统已被用于各种位置,以确定252 Cf中子源在一个钢制的装满水的容器内的位置。提出了一种计算中子源和中子探测器之间距离的方法,并用MCNP模拟进行了验证。已经开发了使用ToF数据的重建算法。在此基础上,估计中子源的位置在其已知位置的20厘米以内,空间分辨率为±7.8厘米。对于实验和模拟数据,从零检验假设中提取的p值分别估计为0.975和0.996。通过正确识别源的位置,证明了系统区分散射和未散射中子的潜力。
Fast neutron time-of-flight (ToF) has been used to characterise the location of a source of a mixed radiation field. Two EJ-309 organic scintillators and a fast, digital, data acquisition system have been used in a variety of positions to identify the location of a 252 Cf neutron source inside a steel, water-filled tank. A methodology for extracting the distance between the neutron source and the neutron detector has been developed and verified with MCNP simulations. A reconstruction algorithm using the ToF data has been developed. The location of the neutron source has been estimated on this basis to be within 20 cm of its known location with a spatial resolution of±7.8 cm. p-values extracted from the null test hypothesis have been estimated to be 0.975 and 0.996 for experimental and simulation data, respectively. By correctly identifying the location of the source, the potential for the system to discern between scattered and unscattered neutrons is demonstrated.
DOI: 10.1016/j.nima.2019.01.092
发表时间: 2020
期刊: Accelerators, Spectrometers, Detectors and Associated Equipment
影响因子: --
作者:
Joyce M
通讯作者: Joyce M
DOI: 10.1051/epjconf/202124716001
发表时间: 2021
影响因子: --
作者:
Bradnam S
通讯作者: Bradnam S
影响因子: 1.4
作者:
Kaestner, A. P.;Hartmann, S.;Lehmann, E. H.
通讯作者: Lehmann, E. H.
特殊核材料构型的快速中子编码孔径成像
DOI: --
发表时间: 2012
期刊:
影响因子: --
作者:
P. Hausladen;M. Blackston;E. Brubaker;D. Chichester;P. Marleau;R. J. Newby
通讯作者: R. J. Newby
编码孔径中子成像系统的结果
DOI: --
发表时间: 2010
期刊: IEEE Nuclear Science Symposuim & Medical Imaging Conference
影响因子: --
作者:
P. Marleau;J. Brennan;E. Brubaker;J. Steele
通讯作者: J. Steele