Injection into the New CERN Antiproton Collector Ring

must provide phase-space matching between the source and the AC, as well as having a region of momentum dispersion. It must also satisfy the constraints imposed by the apertures of the bending and quadrupole magnets which are to a large extent determined by the costs involved and the very limited distance available between the antiproton source and the ring. The design of the components for this line is also dei;endent on the necessity to provide remote-handling capability, particularly for those elements nearest the source. The detailed design 1s not yet completed. &adlation from the AA Hall The antiproton production target is an intense source of radiation. The shieldinq for the source is determined by the need to keep the radiation dose at the CERN site boundaries within the accepted nurms. This radiation will come mostly from neutrons qenerated by plans entering the AA hall and interacting in the machine components and shield that will surround the two rlnqs.