A linac-on-ring collider B-factory study

A preliminary survey of the machine parameters required to achieve a luminosity of 1034 cm-2 s-1 at the Υ(4S) resonance in a linac-on-ring collider has been made. The low emittance electron source and recirculating superconducting linac based on LEP cavities appears to be within the scope of present technologies. The high-current, low-emittance positron storage ring with its low-beta collision point can be broadly specified but a more detailed feasibility study is needed. Simulation of the beam-beam effect indicates that the beam-beam limit may be higher than in equivalent ring-on-ring colliders. The heavily disrupted electron beam poses no obvious problem