Design and test of frequency tuner for CAEP high power THz free-electron   laser
  Peking University is developing a 1.3 GHz superconducting accelerating section for China Academy of Engineering Physics (CAEP) high power THz free-electron laser. A compact fast/slow tuner has developed by Institute of High Energy Physics (IHEP) for the accelerating section, to control Lorentz detuning, beam loading effect, compensate for microphonics and liquid Helium pressure fluctuations. The tuner design, warm test and cold test of the first prototype are presented. 
Zhenghui Mi, Yi Sun, Weimin Pan, Haiying Lin, Danyang Zhao, Xiangyang   Lu, Shengwen Quan, Xing Luo, Ming Li, Xingfan Yang, ...
physics.acc-ph