Baksan DULB实验室快中子通量测量的初步结果
The preliminary results of fast neutron flux measurements in the DULB laboratory at Baksan
摘要：
地下物理实验（如太阳中微子通量、中微子振荡、无中微子双β衰变的研究，以及寻找每年和每天的冷暗物质粒子通量调制）的主要背景来源之一是来自周围岩石的快中子。本文介绍了位于水深4900米的新DULB实验室的快中子通量测量结果。在巴克桑中微子天文台进行了实验。研究了几种常见天然材料的中子屏蔽性能。本文介绍并讨论了用灵敏度约为10^（-7）中子/（cm ^2 sec）的高灵敏度快中子谱仪所获得的初步结果。
英文摘要：
One of the main sources of a background in underground physics experiments (such as the investigation of solar neutrino flux, neutrino oscillations, neutrinoless double beta decay, and the search for annual and daily Cold Dark Matter particle flux modulation) are fast neutrons originating from the surrounding rocks. The measurements of fast neutron flux in the new DULB Laboratory situated at a depth of 4900 m w.e. in the Baksan Neutrino Observatory have been performed. The relative neutron shielding properties of several commonly available natural materials were investigated too. The preliminary results obtained with a high-sensitive fast neutron spectrometer at the level of sensitivity of about 10^(-7) neutron/ (cm^2 sec) are presented and discussed.
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