/ 02 06 04 3 v 1 1 9 Ju n 20 02 EIC Detector Studies ∗

The Yale ’2000 Workshop detector model is presented. A short summary of the Interaction Region Group of the EIC Accelerator Workshop is given. The Yale ’2000 and present workshops extensively reviewed the physics programme for the Electron – Ion Collider (EIC). Also at Yale and during the EIC Accelerator Workshop (EICAW) possible options for the machine and the Interaction Region (IR) were discussed. At Yale a model of a generic detector and the IR layout were proposed and discussed [1, 2]. The design criteria were: • common detector for ep, eA, pp and pA collisions, • reconstruction of “whole” ep and eA event, • precise luminosity monitoring and control of radiative corrections, • good detector quality in the fragmentation regions, • minimal interference with the existing IR optics, • use of the existing RHIC lattice in the spectrometer design, • possibility of a polarized electron beam. ∗Presented at EIC Workshop, 28 February – 2 March, 2002, BNL