Accelerator Technology For A High Power Short Wavelength FEL

A high power visible wavelength free electron laser oscillator experiment has been proposed by the Mathematical Sciences/Boeing team. The experiment is an extension of the infrared amplifier experiments described at this conference.1 The oscillator design is a high extraction, single pass experiment using a SmCo5 permanent magnet tapered wiggler, the electron beam is provided by a RF linac. This paper outlines the accelerator requirements and describes progress in development of a high current injector for the accelerator.