The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - UNPB AU - Wang, X.J. AU - Li, R.K. AU - Shen, X. AU - Yang, J. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Science Frontiers of Megaelectronvolt Ultrafast Electron Probes J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - Ultrafast electron probe is the new frontier for electron scattering instrumentations. The development in high-brightness electron beam made it feasible to explore megaelectronvolt electrons for Ultrafast Electron diffraction and Microsscopy (MeV-UED/UEM)*. Recent development in MeV-UED [2-3] has enabled broad scientific opportunities in ultrafast material science and chemical dynamics, such as the ripples of monolayer MoS2 and atomic movie of light-induced structural distortion in the perovskites solar cell were captured for the first time by the MeV-UED. Single-shot MeV-UED was successfully employed for the first observation of heterogeneous melting**. In the gas phase UED, real space movie of a nuclear wavepacket passing through conical intersections was sucesffuly recorded ***. To probe and controlling electron motion within a molecule and image bio-molecules in its nature environments, new generation electron scattering instruments with better time resolution, higher sensitivity and real space imaging are needed. SLAC’s strategy for next generation ultrafast electron instrument based on the superconductor RF gun will be discussed. PB - JACoW Publishing CP - Geneva, Switzerland ER -