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Pulse shape analysis and identification of multipoint events in a large-volume proportional counter in an experimental search for 2K capture of 78Kr

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Abstract

57-69A pulse shape analysis algorithm and a method for suppressing the noise component of signals from a large copper proportional counter in the experiment aimed at searching for 2K capture of 78Kr are described. These signals correspond to a compound event with different numbers of charge clusters from primary ionization. A technique for separating single-and multipoint events and determining the charge in individual clusters is presented. Using the Daubechies wavelets in multiresolutional signal analysis, it is possible to increase the sensitivity and the resolution in extraction of multipoint events in the detector by a factor of 3–4.

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Authors and Affiliations

  1. Baksan Neutrino Observatory, Institute for Nuclear Research, Russian Academy of Sciences, pos. Neitrino, Elbrus raion, 361609, Kabardino-Balkaria, Russia

    Yu. M. Gavrilyuk, A. M. Gangapshev, V. V. Kazalov, V. V. Kuz’minov & S. P. Yakimenko

  2. Karazin National University, Kharkiv, Ukraine

    S. I. Panasenko & S. S. Ratkevich

Authors
  1. Yu. M. Gavrilyuk
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  2. A. M. Gangapshev
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  3. V. V. Kazalov
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  4. V. V. Kuz’minov
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  5. S. I. Panasenko
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  6. S. S. Ratkevich
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  7. S. P. Yakimenko
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Original Russian Text © Yu.M. Gavrilyuk, A.M. Gangapshev, V. V. Kazalov, V. V. Kuz’minov, S.I. Panasenko, S.S. Ratkevich, S.P. Yakimenko, 2010, published in Pribory i Tekhnika Eksperimenta, 2010, No. 1, pp. 65–77.

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Gavrilyuk, Y.M., Gangapshev, A.M., Kazalov, V.V. et al. Pulse shape analysis and identification of multipoint events in a large-volume proportional counter in an experimental search for 2K capture of 78Kr. Instrum Exp Tech 53, 57–69 (2010). https://doi.org/10.1134/S0020441210010082

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