  A new experiment based on tin-loaded scintillator is proposed to measure the
2nu double beta decay half-life of Sn-124 for the first time. Measurements of
long term stabilitiy and optical properties of the produced scintillator are
presented. In addition a sophisticated estimation of the background due to
cosmic ray spallation on tin has been performed. It is shown that such a
measurement is feasible and can reach half-lives of 10^22 years, thus covering
all current theoretical predictions for this decay mode.
