Cryogenic Avalanche Detecors (CRAD) are referred to as a new class of noble-gas detectors operated at cryogenic temperatures with electron avalanching performed directly in the detection medium. In two-phase CRADs the primary ionization charge, composed of electrons produced in the noble liquid and emitte into the gas phase with THGEM multiplier. This kind of detectors have a large fiducial volume and an ultimate sensitivity, i.e. operated in a single-electron counting mode at extremely low noise. The field of application os such detectors is a direct observation of dark matter particles and the coherent neutrino scattering.
Consept of the such type detector was suggested in the our laboratory. Results of the tests of the prototype will be presented in the report.