Super-radiation Terahertz Source Based On Sub-picosecond Electron Beam At CTFEL

China Academy of Engineering Physics Terahertz Free Electron Laser (CTFEL) works in the range of 0.7~4.2 THz. To expand the range below 0.1 THz, we developed a super-radiation terahertz (THz) source based on sub-picosecond electron beam behind CTFEL. The sub-picosecond electron beam was generated by velocity compression and then injected into undulator to provide THz wave. In this proceeding, the preliminary experimental results of super-radiation terahertz source were reported.