Issues of incompatibility of dipole beam separation schemes with EIC physics

This report addresses the question, can the risk of an eRHIC machine be reduced by replacing the crab-cavities through a dipole field in the IR to separate the electron and hadron beams. In the following, several scenarios to integrate a separation dipole in the IR design will be described. For each of the scenarios the challenges and problems to realize this in practice will be detailed. In addition, the impact on the detector design and the EIC physics program will also be discussed. Several physics requirements need to be integrated into the interaction region design, in order to perform the physics program as described in the EIC White Paper and in the RHIC Design Study. These requirements are also described in detail on a dedicated page of the eRHIC-wiki. The main requirements are described here.