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Measurements of the Reactor Antineutrino with Solid State Scintillation Detector
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SYSNO ASEP 0503628 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Measurements of the Reactor Antineutrino with Solid State Scintillation Detector Author(s) Alekseev, I. (RU)
Belov, V. (RU)
Brudanin, V. (RU)
Danilov, M. (RU)
Egorov, V. (RU)
Filosofov, D. V. (RU)
Fomina, M. (RU)
Hons, Zdeněk (UJF-V) RID, ORCID
Vlášek, J. (CZ)Number of authors 33 Article number UNSP 1860044 Source Title International Journal of Modern Physics-Conference Series, PROCEEDINGS OF THE 21ST PARTICLES AND NUCLEI INTERNATIONAL CONFERENCE (PANIC 2017), 46. - Singapore : World Scientific Publ, 2018 - ISSN 2010-1945 Number of pages 7 s. Publication form Print - P Action 21st International Conference on Particles and Nuclei (PANIC 2017) Event date 01.09.2017 - 05.09.2017 VEvent location Beijing Country CN - China Event type WRD Language eng - English Country SG - Singapore Keywords reactor antineutrinos ; inverse beta-decay ; neutrino oscillations ; sterile neutrino Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders OECD category Nuclear physics R&D Projects LTT18021 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UJF-V - RVO:61389005 UT WOS 000460287700044 DOI 10.1142/S2010194518600443 Annotation Measurements of reactor antineutrino play an important role in the efforts at the frontier of the modern physics. The DANSS collaboration presents preliminary results of a one year run with a cubic meter solid state detector placed below 3.1 GW industrial light U water reactor. The experiment is sensitive to sterile neutrino in the most interesting region of mixing parameter space. 2500 scintillation strips of the sensitive volume of the detector have multilayer passive shielding of copper, lead and borated polyethylene and active muon veto. Detector position below the reactor gives an advantage of overburden about 50 m of water equivalent providing factor of six in cosmic muon suppression and eliminating fast neutrons.The detector is placed on a vertically movable platform which allows to change the distance to the reactor core center in the range 10.7-12.7 m within a few minutes. The strips are read out individually by SiPMs and in groups of 50 by PMTs. 5000 inverse beta-decay events per day are collected in the fiducial volume, which is 78% of the whole detector, at the position closest to the reactor. Overburden, active veto and good segmentation of the detector result in an excellent signal to background ratio. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2020
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