The developments of HEPS and its hard X-ray imaging Beamline

【作者】 黎刚； WANG Jie； WANG Yanping； DENG Tijian； JIANG Xiaoming；

【Author】 LI Gang;WANG Jie;WANG Yanping;DENG Tijian;JIANG Xiaoming;Beijing Synchrotron Radiation Facility,IHEP,CAS;

【机构】 Beijing Synchrotron Radiation Facility,IHEP,CAS；

【摘要】 High Energy Photon Source（HEPS）,a 6 GeV green-field diffraction limited storage ring synchrotron light source,is constructing in Beijing,China.Its storage ring is based on a modified hybrid seven-bend achromat（7 BA） design to reach an ultralow natural emittance of 34.2 pm with a circumference of 1360.4 m.Alternating high and low beta sections are specially designed to generate and deliver X-ray synchrotron radiation with high brightness of 5×10²² photons/s mm² mrad²（0.1% bandwidth）.15 beamlines are constructing during Phase I of HEPS project.The hard X-Ray imaging beamline is well adapted to the characteristics of HEPS machine.This beamline will serve the potentially very large user community,such as biomedicine,engineering materials,fossils and human relics,and so on.Its primary imaging methods is SRX in-line phase contrast imaging and diffraction contrast imaging.Its features are high sensitivity,deep penetration,multiscale spatial & temporal resolution,large FOV,multiple contrast mechanisms,and compatible with diverse sample environments.The ratio of spot size at sample and PSF is more than 150 k.HXI can have both high sensitivity at the high resolution and deep penetration at the same time.This beamline uses the low beta section for small source size and large emittance angle.The energy range is from 5 keV to 300 keV using one wiggler and one CPMU source.The distance between source and sample is 330 m.The spatial resolution is 0.4～100μm.The highest priority of this beamline design is high uniformity and high stability of the X-Ray spot.4 high performance hard X-ray imaging detectors are developing in-house..更多还原

【Abstract】 High Energy Photon Source（HEPS）,a 6 GeV green-field diffraction limited storage ring synchrotron light source,is constructing in Beijing,China.Its storage ring is based on a modified hybrid seven-bend achromat（7 BA） design to reach an ultralow natural emittance of 34.2 pm with a circumference of 1360.4 m.Alternating high and low beta sections are specially designed to generate and deliver X-ray synchrotron radiation with high brightness of 5×10²² photons/s mm² mrad²（0.1% bandwidth）.15 beamlines are constructing during Phase I of HEPS project.The hard X-Ray imaging beamline is well adapted to the characteristics of HEPS machine.This beamline will serve the potentially very large user community,such as biomedicine,engineering materials,fossils and human relics,and so on.Its primary imaging methods is SRX in-line phase contrast imaging and diffraction contrast imaging.Its features are high sensitivity,deep penetration,multiscale spatial & temporal resolution,large FOV,multiple contrast mechanisms,and compatible with diverse sample environments.The ratio of spot size at sample and PSF is more than 150 k.HXI can have both high sensitivity at the high resolution and deep penetration at the same time.This beamline uses the low beta section for small source size and large emittance angle.The energy range is from 5 keV to 300 keV using one wiggler and one CPMU source.The distance between source and sample is 330 m.The spatial resolution is 0.4～100μm.The highest priority of this beamline design is high uniformity and high stability of the X-Ray spot.4 high performance hard X-ray imaging detectors are developing in-house..更多还原