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DANSS Neutrino Spectrometer: Detector Calibration, Response Stability, and Light Yield

  • Physics of Elementary Particles and Atomic Nuclei. Experiment
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Abstract

Apart from monitoring nuclear reactor parameters, the DANSS neutrino experiment is aimed at searching for sterile neutrinos through a detailed analysis of the ratio of reactor antineutrino spectra measured at different distances from the reactor core. The light collection system of the detector is dual, comprising both the vacuum photomultiplier tubes (PMTs) and silicon photomultipliers (SiPMs). In this paper, the techniques developed to calibrate the responses of these photodetectors are discussed in detail. The long-term stability of the key parameters of the detector and their dependences on the ambient temperature are investigated. The results of detector light yield measurements, performed independently with PMTs and SiPMs are reported.

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Correspondence to I. V. Zhitnikov.

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Original Russian Text © I.G. Alekseev, V.V. Belov, M.V. Danilov, I.V. Zhitnikov, A.S. Kobyakin, A.S. Kuznetsov, I.V. Machikhiliyan, D.V. Medvedev, V.Yu. Rusinov, D.N. Svirida, N.A. Skrobova, A.S. Starostin, E.I. Tarkovsky, M.V. Fomina, E.A. Shevchik, M.V. Shirchenko, 2018, published in Pis’ma v Zhurnal Fizika Elementarnykh Chastits i Atomnogo Yadra, 2018.

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Alekseev, I.G., Belov, V.V., Danilov, M.V. et al. DANSS Neutrino Spectrometer: Detector Calibration, Response Stability, and Light Yield. Phys. Part. Nuclei Lett. 15, 272–283 (2018). https://doi.org/10.1134/S1547477118030020

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  • DOI: https://doi.org/10.1134/S1547477118030020

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