Proposals for B- and phi-meson factories in Novosibirsk

Currently, several electron-positron collider projects with extremely high luminosity for the 10-14-, 3-5-, and 1.0-1.2-GeV range of energies in the center-of-mass system are under discussion. These facilities are referred to as B-, C-, and φ-factories in accordance with the particle families to be studied. The new generation of factories will offer the possibility of resolving many urgent problems in modern physics. The possibility of creating such facilities at the Novosibirsk Institute of Nuclear Physics (INP) is being studied. These studies have resulted in a proposal to build a set of facilities capable of producing colliding electron-positron beams with high luminosity. This set includes a facility with colliding electron-positron beams at energies up to 2×6.55 GeV, with a luminosity of nearly 5×10 ³³ cm^-2 s^-1 (B-factory); a facility with colliding electron-positron beams at energies up to 2×0.5 GeV, with a luminosity higher than 10³³ cm^-2 s^-1 (φ-factory); and an injector providing intense electron and positron bunches for the above facilities. The basic component of the injector is assumed to be a linac at an energy of 7 GeV, designed on the basis of accelerating modules being developed at the INP