In 2014, the SAGE-experiment's GGNT-apparatus (gallium-germanium neutrino telescope) was upgraded to perform a very-short-baseline neutrino oscillation experiment BEST (Baksan Experiment on Sterile Transitions) with an intense artificial neutrino source based on Cr. In 2017, the BEST apparatus was completed, but the artificial neutrino source was missing. As of 2018, the BEST experiment was underway. As of 2018, a follow-up experiment BEST-2 where the source would be changed to Zn was under consideration. It uses two gallium chambers instead of one, to better determine whether the anomaly could be explained by the distance from the source of the neutrinos