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 of achieving a stable 1 million Hertz repetition frequency electron beam marks a significant milestone for the Dalian Advanced Light Source project, indicating that the research team has mastered key technologies necessary for its future development [1][3]. Group 1: Project Overview - The Dalian Advanced Light Source pre-research project was initiated in 2020, with a collaborative team from Dalian Institute of Chemical Physics and Shenzhen Advanced Light Source Research Institute, supported by the Dalian municipal government [1]. - The project aims to overcome key technologies for generating high repetition frequency and high-quality electron beams [1]. Group 2: Technical Achievements - After five years of efforts, the team successfully developed critical technologies including photoinjector electron guns, ultrafast laser systems, solid-state RF power sources, superconducting accelerators, and low-temperature liquid helium systems [1]. - The testing platform has achieved a stable acceleration operation of 0.1 milliampere average current electron beam, with specific technical indicators such as electron beam energy exceeding 100 million electron volts and a single pulse charge greater than 100 picocoulombs [2]. Group 3: Significance of the Experiment - The success of this experiment is crucial for the construction and research of high repetition frequency free electron laser devices in China [3].