Antineutrino spectrometer DANSS - 5 years of running

31 Aug 2021, 17:10
Talk in parallel session Neutrino physics and astrophysics Discussion Panel Neutrinos 4


Igor Alekseev (ITEP)


Solid scintillator reactor antineutrino detector DANSS is placed on a
movable platform below 3.1 GW industrial reactor of the Kalininskaya Nuclear
Power Plant. The distance between the detector and the center of
the reactor core is frequently changed in the range 10.9 - 12.9 m. The
reactor materials provide overburden of about 50 m.w.e.
The one-cubic-meter sensitive volume of the detector is assembled
from 2500 polystyrene scintillation strips and surrounded
by a multilayer passive and active shielding. A dual readout
by silicon photo multipliers (individually) and by convention PMTs
(in groups of 50 strips) is used to achieve both high detector
granularity and low noise trigger.

In the position closest to the reactor core up to 5000 inverse
beta-decay events per day are collected with cosmic muons induced
background below 2%. The talk covers 5 years of the detector operation,
results of our search for light sterile neutrinos as well as plans for
the detector upgrade.

Primary author

Presentation Materials

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