Preliminary Considerations for the Design of the Interaction Region
  The design of an Interaction Region (IR) suitable to reach low values of the beta functions at the Interaction Point (IP) and a high collision frequency is a rather difficult task in a short ring as DAPHNE, where an upgrade of the peak luminosity to 10^34 cm-2s-1 is aimed [1]. In the following, general considerations on the design of such an IR are presented, together with a preliminary design; the final design will however be the result of a joint collaboration between accelerator and detector physicists. 
M. E. Biagini