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On August 19, the reporter learned from the Institute of High Energy Physics of the Chinese Academy of Sciences that the storage ring of the High Energy Synchrotron Source (HEPS), a major national scientific and technological infrastructure, has successfully achieved beam storage, with a beam current intensity of more than 10 mA. Next, the team will continue to promote beam modulation and strive to achieve light supply as soon as possible.

Aerial photo of the high-energy synchrotron radiation source. (Photo courtesy of the Institute of High Energy Physics, Chinese Academy of Sciences)

It is reported that HEPS is like an oversized X-ray machine. Using the synchrotron radiation light produced by HEPS, one can better "see" the microscopic world and reveal the generation and evolution mechanism of the microscopic structure of matter.

The storage ring is the core component of HEPS, which is used to store high-energy and high-quality electron beams and generate synchrotron radiation. The circumference of the HEPS storage ring beam track is about 1,360.4 meters, and the area inside the ring is more than 20 football fields. All equipment development and installation were completed on July 1 this year.

On July 23, the HEPS storage ring was officially turned on for beam adjustment; on August 6, the HEPS storage ring successfully achieved single-bunch electron beam storage, with a current of approximately 60 microamperes and a lifetime of more than 1 minute; on August 18, the HEPS storage ring successfully stored 35 bunches, with a current of 12 milliamperes.

The high-energy synchrotron radiation light source storage ring beam adjustment team is working intensively. (Photo courtesy of the Institute of High Energy Physics, Chinese Academy of Sciences)

"The successful realization of beam storage in the HEPS storage ring shows that our early equipment installation and debugging were very successful." Pan Weimin, chief commander of the HEPS project and researcher at the Institute of High Energy Physics of the Chinese Academy of Sciences, introduced that in the next few months, the HEPS beam tuning team will continue to improve and optimize parameters such as electron beam current intensity and lifetime, and strive to provide light for the beamline station as soon as possible.

As the core facility of the major scientific and technological infrastructure cluster in Beijing Huairou Science City, HEPS was approved by the National Development and Reform Commission and built by the Institute of High Energy Physics of the Chinese Academy of Sciences. After completion, it will be one of the brightest fourth-generation synchrotron radiation sources in the world, complementing the existing light sources in my country and open to users in the fields of aerospace, energy and environment, biomedicine, etc. (Reporter Zhang Quan)