Development of a Beamline for Condensed Matter Physics and Materials Research at the Advanced Photon Source

小行星9312543 美国正在建造一个总项目成本超过10亿美元的“第三代”同步加速器X射线源：阿贡国家实验室的先进光子源（APS）。 在APS中，可以预期光源亮度的改善为三到四个数量级。 因此，它将成为可能的追求实验使用的技术完全新颖的x射线制度，如强度波动光谱。 此外，当前的技术，如表面X射线散射、时间分辨散射和X射线磁散射将进一步完善，以产生超出当前源范围的洞察力。 重要的是，高质量，NSF支持，大学团体在APS进行的研究中发挥领导作用，特别是因为该设施可以在研究生教育中发挥作用。 该项目将在APS开发光束线，以开展凝聚态物理和材料科学的前沿研究。 科学方案包括：（a）利用相干X射线进行强度相关波动;（B）对表面相变、结构、动力学和生长进行散射研究;（c）对新的磁性系统，包括无序磁性系统进行X射线磁散射研究。 这条光束线将由来自马萨诸塞州理工学院、IBM和麦吉尔大学的科学家共享，并将提供给其他科学家。 ***

9312543 Mochrie The United States is building a "third generation" synchrotron x- ray source with a total project cost in excess of $1 billion: The Advanced Photon Source (APS) at Argonne National Laboratory. At the APS, one may expect an improvement in the source brilliance by three-to-four orders of magnitude. As a result, it will become possible to pursue experiments using techniques completely novel to the x-ray regime such as intensity fluctuation spectroscopy. In addition, current techniques, such as surface x- ray scattering, time-resolved scattering, and x-ray magnetic scattering will be further refined to yield insight that is beyond the scope of current sources. It is essential that high quality, NSF supported, university groups play a leadership role in the research carried out at the APS most especially because of the role that the facility can play in graduate education. This project will develop a beamline at the APS to carry out forefront research in condensed matter physics and materials science. The scientific program involves: (a) intensity correlation fluctuation using coherent x-rays; (b) scattering studies of surface phase transformations, structure, kinetics and growth; and (c) x-ray magnetic scattering studies of novel magnetic systems, including disordered magnetic systems. This beamline will be shared by scientists from Massachusetts Institute of Technology, IBM, and McGill University, and will be available to other scientists, as well. ***