DANSS: Detector of the reactor AntiNeutrino based on Solid Scintillator
physics.ins-det
/ Authors
I. Alekseev, V. Belov, V. Brudanin, M. Danilov, V. Egorov, D. Filosofov, M. Fomina, Z. Hons, S. Kazartsev, A. Kobyakin
and 21 more authors
A. Kuznetsov, I. Machikhiliyan, D. Medvedev, V. Nesterov, A. Olshevsky, D. Ponomarev, I. Rozova, N. Rumyantseva, V. Rusinov, A. Salamatin, Ye. Shevchik, M. Shirchenko, Yu. Shitov, N. Skrobova, A. Starostin, D. Svirida, E. Tarkovsky, I. Tikhomirov, J. Vlasek, I. Zhitnikov, D. Zinatulina
/ Abstract
The DANSS project is aimed at creating a relatively compact neutrino spectrometer which does not contain any flammable or other dangerous liquids and may therefore be located very close to the core of an industrial power reactor. As a result, it is expected that high neutrino flux would provide about 15,000 IBD interactions per day in the detector with a sensitive volume of 1 m$^3$. High segmentation of the plastic scintillator will allow to suppress a background down to a 1% level. Numerous tests performed with a simplified pilot prototype DANSSino under a 3 GW$_{th}$ reactor of the Kalinin NPP have demonstrated operability of the chosen design. The DANSS detector surrounded with a composite shield is movable by means of a special lifting gear, varying the distance to the reactor core in a range from 10 m to 12 m. Due to this feature, it could be used not only for the reactor monitoring, but also for fundamental research including short-range neutrino oscillations to the sterile state. Supposing one-year measurement, the sensitivity to the oscillation parameters is expected to reach a level of $sin^2(2θ)$ ~ 0.005 with $Δm^2 \subset (0.02-5.0)$ eV$^2$.