Author: Lu, X.H.
Paper Title Page
TUPPC024 R&D of an Ultrafast Probe Apparatus Based on MeV Electron Diffraction at Tsinghua University 1215
  • X.H. Lu, Y.-C. Du, W.-H. Huang, H.J. Qian, C.-X. Tang
    TUB, Beijing, People's Republic of China
  Funding: This work is supported by National Natural Science Foundation of China and National Basic Research Program of China (973 Program).
An ultrafast probe apparatus based on MeV ultrafast electron diffraction is developed at Tsinghua University. It aims at generating 1.5 to 3 MeV pulse with sub-pC charge and sub-ps pulse length for pump-probe experiments. It consists of an S-band 1.6-cell radiofrequency photocathode gun, a solenoid, a sample chamber, a deflecting cavity, a detection system and other diagnostics tools. Simulations show the position of solenoid coil affects the spot size on detection screen and the charge of collimated bunch significantly. The collimator is found to be helpful to stabilize the charge of collimated bunch and reduce its normalized emittance. The construction of the apparatus is almost finished and the commissioning test will start soon.