In the article isotope $^{48}$Ca for observing double beta decay has been considered. Also launched experiment CANDLES and the experiment CARVEL, which is in the project stage, has been considered. Structure of detectors, their characteristics, methods of detection has been presented. Particular attention has been paid to the background processes for both experiments. Experimental sensitivity to double beta decay in the case CANDLES and simulation results for CARVEL has been presented.
Faculty of Physics, Lomonosov Moscow State University. 1(2), Leninskie gory, GSP-1, Moscow 119991, Russian Federation
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