【科技日报】大连先进光源预研项目完成百万赫兹重复频率电子束流贯通实验

Core Insights - The successful experiment marks a significant milestone in the development of high repetition frequency extreme ultraviolet free electron laser technology in China [1][3] - The project, initiated in 2020, has been supported by the Dalian municipal government and involves a collaborative team from Dalian Institute of Chemical Physics and Shenzhen Advanced Light Source Research Institute [1] Group 1 - The research team, led by Academician Yang Xueming and researcher Zhang Weiqing, achieved a stable output of 1 million Hertz repetition frequency electron beam flow [1] - Key technologies developed include photonic cathode electron gun, ultrafast laser system, solid-state RF power source, superconducting accelerator, and low-temperature liquid helium system [1] - The testing platform has achieved a stable acceleration operation of 0.1 milliampere average current electron beam, with energy exceeding 100 million electron volts and pulse charge greater than 100 picocoulombs [2] Group 2 - The platform demonstrated stable operation for 1 hour with energy stability better than 0.01% (RMS) [2] - The success of this experiment is crucial for advancing the construction and research of high repetition frequency free electron laser devices in China [3]