North-Holland, Amsterdam FREE ELECTRON LASERS FOR THE XUV SPECTRAL REGION
نویسنده
چکیده
The generation of high intensity coherent radiation m the soft X-ray region from a free electron laser will require the FEL to operate in the high gam or collective instability regime. In this mode of operation, which does not require a cavity resonator, the radiation field grows exponentially along the undulator until nonlinear effects bring on saturation . We discuss the conditions that the electron beam and the undulator must satisfy for the collective instability to develop . We present an example of an electron storage ring with an undulator in a bypass section which satisfies these conditions . We present estimates of the output power that one can expect from such systems.
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