Superconducting linac for a proton driver

A proton driver using a superconducting linac has the potential to provide beam with flexible characteristics at powers exceeding 4 MW. Efficient use of the input mains power is also an expected feature of such a system. The requirements specific to a neutrino factory which were listed at “NuFact’99” are summarized, and the basic design of such a linac-based proton driver is given. Subjects of further studies are outlined.