Measuring Muon-Induced Fast Neutrons at the Baksan Underground Scintillation Telescope

International Conference on Particle Physics and Astrophysics

物理学;天文学

Boliev, M.M.^1 ; Dzaparova, I.M.^1,2 ; Kochkarov, M.M.^1 ; Novoseltsev, Yu.F.^1 ; Novoseltseva, R.V.^1 ; Petkov, V.B.^1,2 ; Volchenko, V.I.^1 ; Volchenko, G.V.^1 ; Yanin, A.F.^1

Institute for Nuclear Research, Russian Academy of Sciences, 60th October Anniversary prospect 7a, Moscow

117312, Russia^1

Institute of Astronomy, Russian Academy of Sciences, Pyatnitskaya street 48, Moscow

119017, Russia^2

关键词: Cosmogenic nuclides;    Delayed coincidence;    Fast neutrons;    Low-intensity;    Neutron background;    Organic scintillator;    Total flux;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/798/1/012111/pdf
DOI  :  10.1088/1742-6596/798/1/012111

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

A technique to estimation low intensity muon-induced fast neutrons has been developed. The procedure for data analysis and interpretation of the results are discussed. The technique has been applied to estimate the neutron background from rock at the Baksan Underground Scintillation Telescope (BUST). A neutron background measurement relies on the production of a cosmogenic nuclide12B by fast neutrons in an organic scintillator. The method exploited the delayed coincidences between the12B production signals and electrons from12B β--decay. The total flux of muon-induced neutrons from rock was determined to be Φn= (21.5 ± 5) • 10-9cm-2s-1. The estimated full fluxes of neutrons agree with results of Monte-Carlo simulations.