DEVELOPMENT OF AN ITC-RF GUN FOR COMPACT THz FEL

An independent tunable cells thermionic rf gun (ITCRF Gun) used for compact Tera-hertz (THz) free electron laser(FEL) is developed at Institute of Applied Electronics, China Academy of Engineering Physics (CAEP). This RF-gun consists of a single cell and a 3-cells accelerating cavity which are excited independently, so the amplitude and phase of the two parts can be adjusted easily. The paper introduces some results of the simulation, cold test and preliminary hot test. The preliminary test results match most of the expected macroscopic parameters of the extracted beam.