Prototype Design, Hardware And Construction Of Compact And Tuneable X-Band Pre-Bunched Free Electron Maser

We are developing prototype free electron maser (FEM) that is compact, tuneable and efficient for potential industrial use. Therefore we define the characteristics for the construction of a novel X-band rectangular waveguide pre-bunched free electron maser (PFEM). Our device operates at 10 GHz and employs two rectangular waveguide cavities (one for velocity modulation and the other for energy extraction). The electron beam used in this experiment is produced by thernfionic electron gun which can operate at 3 kV and up to 50 mu A. The resonant cavity consists of a thin gap section of height 1 5 ram which reduces the beam energy required for beam wave interaction. The prototype design, hardware and construction process are reported in this paper.