Author: Zhao, L.R.
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Terahertz Oscilloscope for Ultrashort Electron Beams Diagnostics  
  • L.R. Zhao
    LLP, Shanghai, People’s Republic of China
  I base this proposal on paper PHYSICAL REVIEW LETTERS 122, 144801 (2019). The speaker should describe the design and demonstration of a terahertz (THz) oscilloscope for recording time information of an ultrashort electron beam. With such THz oscilloscope, nearly 50-fold longitudinal compression of a relativistic electron beam to about 15 fs (rms) is directly visualized with its arrival time determined with 3 fs accuracy. This technique bridges the gap between streaking of photoelectrons with optical lasers and deflection of relativistic electron beams with radio-frequency deflectors, and should have wide applications in many ultrashort electron-beam-based facilities. The speaker shall report on this work and review the world-wide efforts and progress in this domain.  
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