Conventional 20-TeV, 10-Tesla, p/sup +-/p colliders

The performance of various 20-TeV colliders is discussed assuming 10-Tesla bending magnets. For bunched beams, the luminosity for p-barp collisions will be approximately x 10/sup 31/ cm/sup -2/ sec/sup -1/ where is the average number of interaction per bunch collision desired by the experimenters; for pp collisions this becomes x 10/sup 32/ cm/sup -2/ sec/sup -1/. Values of up to 25 can be accommodated in a straightforward manner. Continuous beam pp collisions may yield a luminosity of 10/sup 33/ to 10/sup 34/ cm/sup -2/ sec/sup -1/ if the large amount of energy in the intense beams can be handled. Assuming that adequate and reliable 10-Tesla magnets can be built without unforeseen difficulties, the construction cost of such a collider, together with its new laboratory in the desert, would cost 2 to 3 billion dollars using present-day, ''conventional'' techniques. Although such a machine appears straightforward to build, considerable RandD will be required in order to optimize the design and bring down costs