lnternal Targets for COSY : a Workshop at Institut für Kernphysik der Kernforschungsanlage Jülich April 6. 17. 1987

This report gives a summary of a workshop on "Internal Targets for COSY" withthe main emphasis on gas-jet targets and brief reviews on other possibletargets for internal experiments in a storage ring. This workshop took placeon April 6 and 7, 1987 at the IKP of the KFA-Jülich. Aim of this meeting wasto overview available and developing features for these delecate experimentaltasks.Since it is obvious that the ring accelerator COSY, the target features, thecooling ability, and the experiment join to a complex, interdependent arrangementthese kind of workshops appear tobe a necessity for designing both themain compounds of the COSY ring as well as the target with the detector setup.The interest in the workshop is documented by a large number of participantscoming not only from the direct CANU (COSY Arbeitsgruppe Nordrhein-Westfälische Universitäten) but rather from the CANU $\underline{et}$ $\underline{al.}$ community, ranging from Italy to Sweden. [...