On April 14, the reporter learned from the Institute of High Energy Physics of the Chinese Academy of Sciences that the first phase of the high-energy synchrotron light source (HEPS) project has been completed with anti-vibration foundation replacement concrete pouring, which marks the construction of the HEPS project. Overcome the first difficulty. 
High-energy synchrotron light source (HEPS) project, the first stage of anti-micro-vibration foundation replacement concrete placement work has been completed. China Science News Figure HEPS is one of the ten major scientific and technological infrastructures determined by the National Thirteenth Five-Year Plan for Major Scientific and Technological Infrastructure Construction. After completion, it will become China ’s first high-energy synchrotron light source.
The HEPS engineering team introduced that the anti-micro-vibration replacement foundation is an important key technology of the HEPS project. The 3m thick anti-vibration foundation replacement construction of the storage ring tunnel and the experiment hall is also one of the key and difficult points of this project. The anti-micro-vibration foundation replacement uses layered pouring, which is divided into three layers of 0.4 meters, 1.8 meters and 0.8 meters. Since the replacement construction started on October 13, 2019, about 80,000 cubic meters of concrete have been poured. It is planned to start post-casting construction in late April. This is the final step of the construction of the anti-vibration foundation. In addition to anti-vibration foundation construction, various construction work of HEPS has made progress to varying degrees.
The main construction content of the HEPS project consists of accelerators, beamline stations, supporting facilities, etc. The accelerator mainly constructs a storage ring with an electron energy of 6 gigaelectron volts, as well as linear accelerators, transmission lines, and intensifiers that provide beams for the storage ring. The first phase of the beamline station is to build 14 beamlines and corresponding experimental stations. The supporting facilities mainly construct the main annular synchrotron radiation source experimental building, supporting ancillary buildings, and general facilities such as water supply, power supply, air conditioning, and radiation protection.
In June 2019, the HEPS project officially started, with a construction period of about 6.5 years. It is expected to be completed and accepted by the end of 2025.
(Original title High-energy synchrotron radiation light source infrastructure overcomes the first difficulty)