An experimental ensemble used for the study of proton-proton scattering at SIN

An experimental program on proton-proton is presently running at SIN. This article gives technical details of the instruments and equipment employed. It reviews, in particular, the SIN polarized proton beam, the large scale equipment, the LH2 and the polarized targets, the detectors, the electronics, the on-line computer and the different basic layouts. Possibly this material could be split into separated articles. However, we find it more valuable to present here a complete picture which reflects the state of the art. (orig.)