CEBAF, a large scale application of superconducting RF

Summary form only given. The Continuous Electron Beam Accelerator Facility (CEBAF) is a 4-GeV, multipass, CW accelerator. The machine is racetrack-shaped with the linac split into two equal parts that are located in the straight sections. The recirculating magnets, which will guide the beam through four passes around the accelerating structure, are in the arc sections connecting the two linacs. At the end of the accelerator, the beam passes into the switchyard where it is guided into any of three experimental end stations. The linac consists of 418 Nb superconducting RF cavities operating at 1500 MHz to produce a high-quality beam having a 100% duty cycle with an energy spread of 10/sup -4/ and emittance of 10/sup -9/ m. A pair of high resolution spectrometers and a high-acceptance, high-energy electron spectrometer will both utilize superconducting dipoles and cos 2 theta quadrupoles. >