Detection of reactor antineutrino coherent scattering off nuclei with a two-phase noble gas detector

Abstract

Estimation of the signal amplitudes and counting rates for coherent scattering of reactor antineutrino off atomic nuclei in two-phase xenon and argon detectors has been done. A conceptual design of detector based on the existing technologies and experience has been proposed. It is shown that a condensed xenon/argon two-phase detector possesses the necessary sensitivity for the use in experiment on detection of coherent scattering of the reactor antineutrino off nuclei. It is shown that a two-phase detector with both optical readout by PMTs and ionisation readout by GEM/THGEM possesses superior capability for identification of the events of coherent antineutrino scattering.