Abstract
An algorithm is proposed that provides reliable discrimination between neutrons and γ rays in mixed fields and reduces the influence of γ-ray pileups at a slight complication of the hardware and the algorithms. The algorithm uses a stepwise Gatti filter for two detection periods (a short period of several hundreds of nanoseconds and a long period of a few microseconds) for the same event. Using mathematical simulation of 12000 neutron and γ-ray events, it has been demonstrated that at particle energies of ~128 keV in the electron equivalent (ee), the algorithm suppresses γ-ray pileups on a level of 104 with a neutron loss of only approximately 1%. Due to the proposed algorithm, the counting ability is of the order of 105 events/s.
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Original Russian Text © S.S. Verbitsky, V.N. Emokhonov, A.M. Lapik, A.V. Rusakov, M.A. Tikanov, A.N. Tselebrovsky, A.A. Shilyaev, 2017, published in Pribory i Tekhnika Eksperimenta, 2017, No. 2, pp. 35–39.
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Verbitsky, S.S., Emokhonov, V.N., Lapik, A.M. et al. Suppression of pileup events by pulse shape discrimination using the Gatti filter. Instrum Exp Tech 60, 188–192 (2017). https://doi.org/10.1134/S0020441217010286
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DOI: https://doi.org/10.1134/S0020441217010286