Summary of the Tgv Experiment and Future Plans

The collaboration TGV has finished measurement of 2 nu EC/EC decay of Cd-106 with 10g (Phase I) and 13.6g (Phase II) samples (with enrichment of 75%), respectively. The times of measurements were 8687h (Phase I) and 12900h (Phase II). The half-life limits (at 90% CL) were obtained for 2 nu EC/EC decay of Cd-106 to the ground state of Pd-106 as T-1/2 > 3.0 x 10(20) y (Phase I) and T-1/2 > 4.2 x 10(20) y (Phase II). The collaboration decided to continue with the study of 2 nu EC/EC decay of Cd-106 using 23g of an isotope enriched to 98.4%. We plan to use the TGV II spectrometer for this measurement and also Si pixel detectors for further study of double beta decay (beta beta) processes.