Speaker
Description
China’s High Energy Photon Source (HEPS) is the first national high-energy synchrotron radiation light source and one of the world’s brightest fourth-generation synchrotron radiation facilities. It started to operate and conduct user experiments at the end of 2025.
The 14 beamlines for the phase I of HEPS are projected to produce more than 300PB raw data annually. Efficiently storing, analyzing, and sharing this huge amount of data presents a significant challenge for HEPS.
To ensure the accuracy, availability, and accessibility of the massive data generated at HEPS, we developed a dedicated data management and data service system named DOMAS. It is designed to automate the organization, transfer, storage, distribution and sharing of the experimental data. This paper first introduces the overall profile of HEPS and the progress of its construction. It then outlines the architecture and data flow of DOMAS, followed by an explanation of key technologies and newly implemented functional modules. For instance, we illustrate the automated data tracking process under a tiered storage policy and demonstrate how DOMAS ensures consistent user authorization for data access on both the website and the computing cluster. Furthermore, the effectiveness of the system deployment in the HEPS production environment is presented. Finally, we offer some reflections on the design of data management systems tailored to the needs of advanced light source facilities.
