Yingchao Du

Abstract MeV ultrafast electron diffraction (UED) is a widely used technique for ultrafast structural dynamics studies of matter in numerous areas. The development of the laser wakefield accelerator (LWFA) shows great potential for an advanced all-optical electron source based on LWFA in UED applications. Here we experimentally demonstrated that an LWFA-based device with a miniaturized permanent magnet beamline can generate and manipulate electron beams suitable for UED.

Recent progresses in the modification strategies of MXene-based membranes for water and wastewater treatments Membrane technology stands as a leading method for water and wastewater treatments. MXene, a type of two-dimensional material, has garnered significant interest as a promising next-generation membrane material. Its customizable pore structure, uniform pore size, and hydrophilicity make it highly suitable for membrane separation technologies.

Beam-driven plasma wakefield acceleration (PWFA) is a promising technique to generate high-energy electron bunches for future electron-positron colliders. Longitudinal shaping of high-charge drive beam is highly desired for achieving high-transformer ratio and loading high-charge witness beam. However, the existing shaping schemes either focused on relatively low-charge bunch shaping or accompanied with significant charge-loss rate (typically over 50%).