2026-10-14T10:43:30Z https://www.scidb.cn/oai

10.57760/sciencedb.31621 2026-03-26T17:37:55Z

2026-03-26 Longitudinal phase-space reconstruction of laser wakefield accelerated electron beams via coherent transition radiation doi:10.57760/sciencedb.31621 en We propose and numerically validate a scheme for reconstructing the longitudinal phase space of laser wakefield accelerated electron beams, based on measuring the coherent transition radiation spectrum in combination with dispersion manipulation. The final beam length after the chicane depends on the initial longitudinal beam properties and the deflection angle. By fitting the measured dependence of beam length on deflection angle to a theoretical model, key initial beam parameters are estimated, including the chirp, slice energy spread, and beam duration. This allows the longitudinal phase space distribution to be derived. Start-to-end simulations confirm that the method operates without direct laser–electron interaction, provides the potential for sub-femtosecond resolution, and effectively characterizes higher-order chirp components. Laser wakefield acceleration; electron beam diagnostics; longitudinal phase space; beam compression chicane; coherent transition radiation; phase retrieval 娄志恒 冯珂 葛彦杰 Gu, Zhengtian 郭子笑 王文涛 PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank