第四代高能同步辐射光源HEPS及高压相关线站建设

Introduction of Fourth-Generation High Energy Photon Source HEPS and the Beamlines for High-Pressure Research

作为国家重大科技基础设施“十三五”规划重点建设的项目之一,目前,高能同步辐射光源已经在北京怀柔科学城开始建设,项目目标是建设具有极低发射度、重点覆盖高能区(约300 keV)的第四代同步辐射光源。新的高能光源将为科学研究提供光斑更小、亮度更高、相干性更好的X射线探针。同步辐射光源已经帮助科研人员在高压科学研究的诸多领域取得了丰硕的成果。反过来,应高压研究更高的需求,也在促进同步辐射实验技术的不断发展与进步。本文旨在对高能同步辐射光源首批线站中能够开展高压研究的高压光束线站、吸收谱学线站、高分辨谱学线站和显微成像线站的建设方案进行介绍,一方面有助于用户更好地了解相关设施,另一方面也希望结合用户需求完善后续线站的建设工作,共同推进高压学科在同步辐射领域的发展。

The High Energy Photon Source(HEPS)located at Huairou’s Science City in Bejing,one of the key projects listed in the“13th Five-year Plan for national major scientific and technological infrastructure”,has been under construction since 2019.HEPS will be a world-leading 4th generation high energy synchrotron radiation source featuring very low emittance,very high brilliance and high X-ray energy(about 300 keV).The new light source will provide X-ray probes with smaller size,higher brightness and better coherence for scientific researches.Synchrotron radiation technology has helped researchers achieve rich results in highpressure research.In turn,the demand for high-pressure research is also promoting the development of synchrotron radiation experiment technology.In this paper,the design of the beamlines in the HPES phase I for high-pressure research are introduced,including a high-pressure beamline,an X-ray absorption spectroscopy beamline,a hard X-ray high energy resolution spectroscopy beamline and a transmission X-ray microscopy beamline.It is expected to help users well understand the functions of these beamlines,and further promote the development of synchrotron radiation high-pressure research together with the user community via seamless integration of techniques and users’various requirements for advancing highpressure science.