Determination of energy-dependent neutron backgrounds using shadow bars-猫眼课题宝

DOI：

10.1016/j.nima.2023.168341

发表时间：

2022-12

期刊：

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

影响因子：

通讯作者：

中科院分区：

其他

文献类型：

作者：

S. Paneru;K. Brown;F. Teh;K. Zhu;M. Tsang;D. DellAquila;Z. Chajecki;W. G. Lynch;S. Sweany;C. Tsang;A. Anthony;J. Barney;J. Estee;I. Gašparić;G. Jhang;O. Khanal;J. Manfredi;C. Niu;R.S. Wang;J. Zamora

了解中子本底对于确定核反应的中子产额至关重要。用阴影棒法测量了56、140 MeV/u的40、48 Ca重离子轰击58、64 Ni和112、124 Sn靶的中子本底。在这里提出的分析中，黄铜阴影棒被放置在有机液体闪烁体中子探测器的前面，以确定能量依赖的中子背景分数。有、无阴影棒的中子能谱测量对更准确地确定中子本底具有重要意义。中子背景，沿着其来源和系统的不确定性，探讨了重点背景模型的影响和它们对中子能量的依赖。

Understanding the neutron background is essential for determining the neutron yield from nuclear reactions. The neutron backgrounds were determined for heavy-ion collision experiment using the shadow-bar method, where beams of40,48Ca at 56, 140 MeV/u impinged on targets of58,64Ni and112,124Sn. In the analysis presented here, brass shadow bars are placed in front of organic liquid scintillator neutron detectors to determine the energy-dependent neutron background fractions. The measurement of neutron spectra with and without shadow bars is important to determine the neutron background more accurately. The neutron background, along with its sources and systematic uncertainties, are explored with a focus on the impact of background models and their dependence on neutron energy.

Determination of energy-dependent neutron backgrounds using shadow bars

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