STATUS OF THE EDDA EXPERIMENT AT COSY

The EDDA experiment is designed to study p + p excitation functions wi th high energy resolution and narrow step size in the kinetic energy r ange from 250 MeV to 2500 MeV at the Cooler Synchrotron COSY. Measurem ents during the accelertion phase in conjunction with internal targets will allow to achieve a fast and precise energy variation. Prototypes of the detector elements and the fiber target have been extensively t ested with proton and electron beams; the detector performance and tri gger efficiency have been studied in Monte Carlo simulations. In this contribution, results concerning detector design, prototype studies, M onte Carlo simulations and the anticipated detector resolutions will b e reported.