Project for a Super Charm–Tau Factory at BINP

The construction of an electron–positron collider of the megascience class, referred to as the Super Charm–Tau Factory, is envisaged at the Budker Institute of Nuclear Physics (Novosibirsk). The beam energy will vary between 1 and 2.5 GeV, and the peak luminosity of the machine will reach 10 35 cm –2 s –1 owing to the Crab-Waist collision scheme and to high beam currents (up to 2 A). The project provides for a longitudinal polarization of the electron beam in the collision region. The physics agenda includes in-depth studies of the c -quark and tau-lepton properties and a search for beyond-SM physics.