First ground-level laboratory test of the two-phase xenon emission detector RED-100

Understand

RED-100 is a two-phase detector for study of coherent elastic scattering of reactor electron antineutrinos off xenon atomic nuclei.

• The detector contains a total of 200 kg of liquid xenon in a titanium cryostat with 160 kg of xenon in active volume inside a Teflon-made light collection cage associated with electrode system.
• The active volume is viewed by two arrays of nineteen 3"-diameter Hamamatsu R11410-20 PMTs assembled in two planes on top and bottom.
• The electrode system is equipped with an electron shutter (a patented device) to reduce a "spontaneous" single-electron noise.