The Status of SATURNE

SATURNE is the Sarov tritium neutrino experiment that aims at the first observation of coherent elastic neutrino–atom scattering and the search for neutrino electromagnetic properties. A marked feature of the experiment is the use of a high-intensity tritium source of electron antineutrinos with a total tritium mass of at least 1 kg (10 MCi). Three detectors are being developed for the goals of the experiment. A 1-m $${}^{3}$$ liquid He-4 detector operating at a temperature between 40 and 60 mK is designed both to register coherent elastic neutrino–atom scattering and to search for the neutrino magnetic moment at a level of $$\mu_{\nu}\sim 10^{-13}\,\mu_{\textrm{B}}$$ , which is about an order of magnitude better than the world-leading upper limits on the $$\mu_{\nu}$$ value. A 4-kg Si crystal detector operating at a temperature in the range of 10–50 mK and a 14-kg SrI $${}_{2}$$ (Eu) scintillation detector operating at a temperature between $$-60$$ and $$-40$$ $${}^{\circ}$$ C are purposed for testing the $$\mu_{\nu}$$ value on the order of $$\sim 10^{-12}\,\mu_{\textrm{B}}$$ , which is competitive with or even better than the world-leading upper limits.