Abstract

A high power THz free electron laser (FEL) facility is under construction at China Academy of Engineering Physics (CAEP) since October, 2011. The radiation frequency of the FEL facility will be tuned in range of 1∼3 THz and the average output power will be about 10 W. The system mainly consists of a GaAs photoemission DC gun, superconductor accelerator, the hybrid wiggler, optical cavity. In this paper, the design considerations and first lasing are given.

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