What question did this study set out to answer?

To detail the commissioning results and challenges encountered in the High Energy Photon Source, the first of its kind in China.

February 2, 2026Open Access

Commissioning of the HEPS

Puntos clave

To detail the commissioning results and challenges encountered in the High Energy Photon Source, the first of its kind in China.
Conducted civil construction and equipment fabrication for HEPS.
Installed the necessary tunnel infrastructure for the accelerator.
Executed beam commissioning to validate performance of the storage ring.
Successfully completed major aspects of construction by 2025.
Achieved a beam energy of 6 GeV and a circumference of 1360 m.
Identified key physics issues during commissioning and outlined measures to address them.

Resumen

The High Energy Photon Source (HEPS) is the first 4th generation light source and the first high-energy storage ring light source in China, with a beam energy of 6 GeV, a circumference of 1360 m and a natural emittance of a few tens of picometers. As a green-field light source, the HEPS construction started in 2019 and is scheduled to be completed in 2025. Now civil construction, component fabrication and tunnel installation, and beam commissioning of the HEPS has been basically finished. In this report, the accelerator and especially the storage ring commissioning results, and main physics issues faced and corresponding measures during the beam commissioning will be presented.

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