Abstract
| The feasibility studies and luminosity estimates of some conceivable asymmetric $e^+ e^-$ linac-ring colliders are presented. The peculiar features of some storage rings(PETRA, CESR, SPS, PEP II) are discussed in order to achieve a $9 goal luminosity ${\cal L}\approx 10^{30} \div 10^{31} cm^{-2} s^{-1}$ at $\sqrts \approx 2\,GeV$. The performances to be provided by a suitable linac, both a possible, a conventional one, are presented. Some points which are of $9 concern in the design of the detector, due to the boosting of the outgoing particles in the laboratory frame, are introduced too. |