Time- and energy-resolved effects in the boron-10 based multi-grid and helium-3 based thermal neutron detectors
Time- and energy-resolved effects in the boron-10 based multi-grid and helium-3 based thermal neutron detectors
复制标题
基于硼 10 的多栅和基于氦 3 的热中子探测器中的时间和能量分辨效应
DOI：
10.1088/1361-6501/abc63e
复制
发表时间：
2020
影响因子：
2.4
通讯作者：
W. Xiong
中科院分区：
文献类型：
--
作者：
A. Backis;A. Khaplanov;R. Al Jebali;R. Ammer;I. Apostolidis;J. Birch;C. Lai;P. Deen;M. Etxegarai;N. de Ruette;J. Freita Ramos;D. Förster;E. Haettner;R. Hall;D. Hamilton;C. Höglund;P. Kadletz;K. Kanaki;E. Karnickis;O. Kirstein;S. Kolya;Z. Kraujalyte;A. Laloni;K. Livingston;O. Löhman;V. Maulerová;N. Mauritzon;F. Müller;I. Lopez Higuera;T. Richter;L. Robinson;R. Roth;M. Shetty;J. Taylor;R. Woracek;W. Xiong
基于硼-10的多栅格探测器正在开发中，以替代基于氦-3的中子探测器。在欧洲散裂源，探测器将用于冷中子能量到热中子能量的飞行时间中子光谱分析。这项工作的目的是研究多栅格探测器的精细时间和能量分辨效果，低至几微电子伏，同时将其与典型的氦-3管的性能进行比较。此外，它还将表征探测器技术在内部散射方面的差异，以及∼ µS短中子脉冲的时间重建。这些数据是在柏林亥姆霍兹中心获得的，多重栅格探测器和氦-3管安装在ESS测试光束线V20上。使用费米斩波器，反应堆的中子束被切成几十微米宽的S脉冲，然后到达位于下游几十厘米处的探测器。测量数据表明，导出的中子探测效率曲线与计算的中子探测效率曲线符合较好。这些数据还提供了关于内部散射的影响以及如何减少它的详细信息。第一次，斩波器的分辨率可以与多重网格探测器的定时分辨率相媲美。这使得对时间和能量分辨效应的详细研究，以及与典型的氦-3管的比较。
The boron-10 based multi-grid detector is being developed as an alternative to helium-3 based neutron detectors. At the European Spallation Source, the detector will be used for time-of-flight neutron spectroscopy at cold to thermal neutron energies. The objective of this work is to investigate fine time- and energy-resolved effects of the Multi-Grid detector, down to a few µeV, while comparing it to the performance of a typical helium-3 tube. Furthermore, it is to characterize differences between the detector technologies in terms of internal scattering, as well as the time reconstruction of ∼ µs short neutron pulses. The data were taken at the Helmholtz Zentrum Berlin, where the Multi-Grid detector and a helium-3 tube were installed at the ESS test beamline, V20. Using a Fermi-chopper, the neutron beam of the reactor was chopped into a few tens of µs wide pulses before reaching the detector, located a few tens of cm downstream. The data of the measurements show an agreement between the derived and calculated neutron detection efficiency curve. The data also provide fine details on the effect of internal scattering, and how it can be reduced. For the first time, the chopper resolution was comparable to the timing resolution of the Multi-Grid detector. This allowed a detailed study of time- and energy resolved effects, as well as a comparison with a typical helium-3 tube.
BNCT用124Sb-Be中子源研究
DOI：
--
发表时间：
2018
期刊：
影响因子：
--
作者：
Kenichi Tanaka;Tsuyosi Kajimoto;Yoshinori Sakurai;Tomohiro Nakamura;Satoru Endo
通讯作者：
Satoru Endo
Masabumi Nishikawa.：物理研究中的核仪器和方法 A. (1989)
DOI：
--
发表时间：
--
期刊：
影响因子：
--
作者：
通讯作者：
--