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Creation of the second neutrino laboratory at the SM-3 reactor in order to increase the accuracy of the "Neutrino-4" experiment
Russian version
DOI: 10.21883/TP.2023.01.55452.241-22
Serebrov A. P.1, Ivochkin V. G.1, Samoilov R. M.1, Fomin A. K.1, Zinoviev V. G.1, Volkov S. S.1, Golovtsov V. L.1, Gruzinskii N. V.1, Neustroev P. V.1, Fedorov V. V.1, Parshin I. V.1, Gerasimov A. A.1, Zaytsev M. E.1,2, Chaikovskii M. E.1, Gagarskiy A. M.1, Petelin A. L.3, Izhutov A. L.3, Gromov M. O.3, Sazontov S. A.3, Tuzov A. A.3, Ryikalin V. I.4, Makarenkov D. A.5, Nemeryuk A. M.5, Kuzmina T. E.6
1Konstantinov Petersburg Nuclear Physics Institute, National Research Center Kurchatov Institute, Gatchina, Russia
2Dimitrovgrad Engineering and Technological Institute MEPhI, Dimitrovgrad, Russia
3JSC “State Science Center Research Institute of Atomic Reactors”, Dimitrovgrad, Russia
4NRC “Kurchatov Institute” - IHEP, Protvino, Russia
5NRC “Kurchatov Institute” - IREA, Moscow, Russia
6JSC Radium Institute. V.G. Khlopina, St. Petersburg, Russia
Email: serebrov_ap@pnpi.nrcki.ru
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In the experiment "Neutrino-4" on the search for a sterile neutrino, the effect of oscillations was found at a confidence level of 3 standard deviations. In order to significantly increase the accuracy of the experiment, a second neutrino laboratory is created at the SM-3 reactor (Dimitrovgrad, Russia) and a new neutrino detector is developed. The scintillation-type detector consists of 4 modules having a multi-sectional structure with a horizontal arrangement of 100 sections with PMTs located on both sides of the section. The possibility of increasing the accuracy of the experiment by a factor of 2.7 is shown, which will make it possible to achieve a confidence level of more than 5 standard deviations and answer the question of the existence of a sterile neutrino. Keywords: sterile neutrino, reactor antineutrino.
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