中物院太赫兹自由电子激光装置现状及升级计划

The Terahertz Free Electron Laser facility of the China Academy of Engineering Physics (CAEP THz FEL, CTFEL) is the only high-average-power free electron laser terahertz source operating in China based on a superconducting accelerator. It has the characteristics of continuously tunable frequency online (0.1 - 4.2 THz), high peak power (>0.5 MW), high average power (>10 W), high repetition rate (54.17 MHz), short pulse (~ps), narrow linewidth (~2%), full coherence and linear polarization, etc. Since it produced light in 2017, it has been operating stably for more than four years and many applied experimental studies have been carried out. To further meet the needs of users, the CTFEL plans to be upgraded to an infrared terahertz free electron laser facility, with the electron beam energy increased to a maximum of 50 MeV and the spectral range expanded to 0.1 - 125 THz. At the same time, two experimental stations for material spectroscopy and biomedicine will be built.

中国工程物理研究院太赫兹自由电子激光装置(CAEP THz FEL,CTFEL)是国内唯一运行的基于超导加速器的高平均功率自由电子激光太赫兹源,具有频率连续在线可调(0.1~4.2 THz)、高峰值功率(>0.5 MW)、高平均功率(>10 W)、高重频(54.17 MHz)、短脉冲(~ps)、窄线宽(~2%) 、全相干和线性偏振等特点。自2017年出光以来,已稳定运行了四年多,并开展了诸多应用实验研究。为进一步满足用户需求,CTFEL计划升级为一台红外太赫兹自由电子激光装置,电子束能量提升至最大50 MeV,频谱范围拓展至0.1~ 125 THz,同时,建设材料光谱和生物医学两个实验站。