Speaker
Description
The main goal of the DANSS project is to probe SBL reactor antineutrino
oscillations to the sterile state with a compact cubic meter highly
segmented neutrino spectrometer made of 2500 plastic scintillator strips
(100 x 4 x 1 cm^3) covered with gadolinium loaded reflective coating and
read out by 2500 SiPMs and 50 PMTs via WLS-fibers. The DANSS detector has
been built under a 3 GW commercial reactor (the Kalinin NPP, Russia). The
spectrometer has passive shield, active muon veto, and can be positioned
in 10-12 m from the center of the reactor due to a vertically mobile
platform. It is registering 5000 reactor antineutrinos per day via inverse
beta decay with an excellent discrimination of all types of background.
Preliminary results of analysis of one year data collected in 2016-2017
will be presented. These data provide sensitivity in the most interesting
region of the phase space, where sterile neutrino is predicated by RNA and
other anomalies in SBL oscillation data.
