After LEP

The idea emerged for a ring of superconducting magnets, installed above the LEP ring, to collide protons together (or protons with antiprotons) at as high an energy as possible. Some work has been done to firm up the ideas for the new Collider: determining the best configuration for the proton-proton option and establishing its advantages over a realistic proton-antiproton option; assessing collisions between the electron beam of LEP and one proton beam; designing a complete section of the machine; making tentative designs of superconducting magnets providing between 8 and 10 tesla, and working out a European magnet development programme towards this goal; outlining where and how the various types of collisions could be exploited in the LEP tunnel. (orig./HSI).