Abstract
Assembling the next generation of linear particle accelerators requires progress in three areas. Sources must be developed to provide the coherent electromagnetic radiation used to power the device. Physical structures must be designed which efficiently transfer the power to the high energy beam. Cooling techniques must be developed in order to enhance beam transport and to provide sufficient luminosity. This paper will describe a method of obtaining a highly efficient coherent radiation source by using a continuous wave Free Electron Laser (FEL). Several possibilities exist for an accelerating structure which could use this radiation as a power source. These include scaling down the size of traditional R-F cavities, inverse free electron lasers, and surface grating schemes. Inverse free electron lasers have the possibility of intrinsic cooling of the high energy beam.
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