Design of an MeV ultra-fast electron diffraction experiment at Tsinghua university

摘要

Time-resolved MeV ultra-fast electron diffraction (UED) is a powerful tool for structure dynamics studies. In this paper, we present a design of a MeV UED facility based on a photocathode RF gun at Tsinghua University. Electron beam qualities are optimized with numerical simulations, indicating that resolutions of 250 fs and 0.01 A, and bunch charge exceeding 106 electrons are expected with technically achievable machine parameters. Status of experiment preparation is also presented.