SUPERFLIC: A recirculating superconducting linear collider toponium factory

The conceptual design of a 0.3--0.4 TeV e+e- linear collider which uses superconducting RF (SRF) accelerating cavities is presented. This machine is intended to provide high luminosity and low collision energy spread to allow precise studies of the t bar t resonant states. Only through use of SRF is such a collider made possible. It features use of recirculation arcs as a partial remedy to presently low SRF accelerating gradients. Development of this type of collider is motivated by and could serve as a stepping stone to exploiting SRF at higher energies. In TeV-range SRF colliders the serious difficulties arising from the beam-beam interaction, very small beam sizes and tolerances characteristic of normal conducting machines can be greatly diminished. 21 refs