Author: Li, M.
Paper Title Page
MOPFI036 Study of the Cold Cathode RF Electron Gun Based on Doped Diamond Films at CAEP 366
  • X. Li
    TUB, Beijing, People's Republic of China
  • W. Bai, M. Li
    CAEP/IAE, Mianyang, Sichuan, People's Republic of China
  Diamond relevant materials have been considered as a promising field emission cathode in recent years. High current density can be obtained either by diamond field emission arrays or by doped diamond films under electrical strengths of several decades of MV/m. Based on the doped films a half cell S-band electron gun has been designed and constructed at CAEP. The gun can provide an accelerating gradient of 60-80 MV/m on the cathode surface (6 mm in diameter). Simulations have proven good performance of such a gun but it needs confirmed by further experiments. Details of the experiments and comparisons with simulations will be reported.  
MOPME036 Prototype Experiment Preparation of a 54.167MHz Laser Wire System for FEL-THz Facility at CAEP 550
  • D. Wu
    TUB, Beijing, People's Republic of China
  • W. Bai, M. Li, H. Wang, J. Wang, X. Yang
    CAEP/IAE, Mianyang, Sichuan, People's Republic of China
  In this paper, a prototype experiment preparation of a 54.167 MHz laser wire system is presented, which will be used to measure the beam size of a CW DC gun built as an electron source of FEL-THz facility in China Academmy of Engineering Physics (CAEP). The rms beam size is less than 1 mm and the average current of the electron beam is more than 1 mA. This new-type LW system ultilizes the excess power other the photocathode drive laser and becomes much cheaper and simpler. Plus, it can distinguish beams with different energies which are very close in ERLs. The system layout and the simulation results are also presented.  
WEPFI036 R&D on a Main Accelerating Section of a Compact THz-FEL 2780
  • W. Bai, M. Li, X. Shen, H. Wang, X. Yang
    CAEP/IAE, Mianyang, Sichuan, People's Republic of China
  In order to develop a tera-hertz(THz) radiation source and to make scientific researches on application of THz technology, a study on tera-hertz source is performed. The radiation source is based on technology of free electron laser(FEL). The energy booster section of the injector uses a 9 Cell standing wave accelerator as the main accelerator for the FEL. The accelerator works at S band.(2856 MHz), excited by a microwave power of about 3.5 MW. At the end of the accelerator, the high quality beam energy is of 6.5MeV ~ 7 MeV, and the current about 300 mA. This paper presents the newly prgress of the , as well as the working condition of the main accelerator.