Author: Huang, R.
Paper Title Page
MOPFI038 Generation and Measurement of Sub-picosecond Electron Bunch in Photocathode RF Gun 372
  • W.W. Li, Z.G. He, R. Huang, Q.K. Jia, G. Zhou
    USTC/NSRL, Hefei, Anhui, People's Republic of China
  The generation of subpicosecond electron bunch in the photocathode rf gun was considered and simulated by improving the acceleration gradient of the gun, suitably tuning the charge of the electron bunch and the acceleration phase. To measure the length of the electron bunch, the design of a nondestructive bunch length measurement technology was also presented in this paper.  
MOPFI039 The Design of a Compact THz Source Based on Photocathode RF Gun 375
  • W.W. Li, Z.G. He, R. Huang, Q.K. Jia
    USTC/NSRL, Hefei, Anhui, People's Republic of China
  Narrow-band THz coherent Cherenkov radiation can be driven by a subpicosecond electron bunch traveling along the axis of a hollow cylindrical dielectric-lined waveguide. We present a scheme of compact THz radiation source based on the photocathode rf gun. On the basis of our analytic result, the subpicosecond electron bunch with high charge (800pC) can be generated directly in the photocathode rf gun. A narrow emission spectrum peaked at 0.24 THz with 2 megawatt (MW) peak power is expected to gain in the proposed scheme (the length of the facility is about 1.2 m), according to the analytical and simulated results.