A Fast Injection System with a Superconducting Accumulator Ring for a Tau Charm Factory *

The type of high luminosity, storage ring collider being studied by SLAC for a tau-charm factory will require high energy, low emittance sources of positrons and electrons suitable for filling the rings. Ideally, the fill time should be much shorter than the luminosity life-time of the rings. For the purpose of estimating the characteristics of the injection system, the maximum fill time is taken to be 0 (100) seconds. The characteristics of the asymmetric storage rings have been studied by Jowett [l]. In his parameter studies, Jowett has found that the luminosity life time should be 0(104 set). Similar studies conducted at SLAC prior to this workshop have resulted in a set of specifications to be met by the designers of the injection system.