Detector of the reactor AntiNeutrino based on Solid-state plastic Scintillator (DANSS). Status and first results

0477318 - ÚJF 2018 RIV GB eng J - Článek v odborném periodiku
Alekseev, I. - Belov, V. - Brudanin, V. - Danilov, M. - Egorov, V. - Filosofov, D. V. - Fomina, M. - Hons, Zdeněk - Kazartsev, S. - Kobyakin, A. - Machikhiliyan, I. - Medvedev, D. - Nesterov, V. - Olshevsky, A. - Ponomarev, D. - Rozova, I. - Rumyantseva, N. - Rusinov, V. - Salamatin, A. - Shevchik, Y. - Shirchenko, M. - Shitov, Yu. A. - Skrobova, N. - Starostin, A. - Svirida, D.N. - Tarkovsky, E. - Tikhomirov, I. - Vlášek, J. - Zhitnikov, I. - Zinatulina, D. R.
Detector of the reactor AntiNeutrino based on Solid-state plastic Scintillator (DANSS). Status and first results.
Journal of Physics: Conference Series. Roč. 798, UNSP (2017), č. článku 012152. ISSN 1742-6588. E-ISSN 1742-6596.
[2nd International Conference on Particle Physics and Astrophysics (ICPPA). Moscow, 11.10.2016-14.10.2016]
Grant CEP: GA MŠMT LG14004
Institucionální podpora: RVO:61389005
Klíčová slova: detector * SiPMs * beta-decay
Obor OECD: Particles and field physics

A detector of the reactor antineutrino based on a cubic meter of plastic scintillator is installed below 3.1 GW industrial reactor. The detector is placed on a movable platform which allows to change the distance to the reactor core center in the range 10.7-12.7 m. 2500 scintillator strips are read out individually by SiPMs and in groups of 50 by PMTs. In addition to the overburden by the reactor (50 m w.e.) the detector has multilayer passive shielding and active muon veto.
Inverse beta-decay count rate of about 5000 events per day in the fiducial volume (78% of the detector) with about 5% of cosmic background has been reached. DANSS is sensitive to sterile neutrino in the most interesting region of mixing parameter space.
The article covers the detector status and performance, as well as the first results.
Trvalý link: http://hdl.handle.net/11104/0273696