The linear accelerator of China's high-energy synchrotron radiation light source successfully accelerated its first electron beam on Tuesday, its builder has announced. The light source, the High Energy Photon Source (HEPS), is a major science infrastructure project in China built by the Institute of High Energy Physics under the Chinese Academy of Sciences (CAS). The construction started in June 2019 and is expected to take 6.5 years to be completed. HEPS is like a supersized X-ray machine, wit