ChemMatCARS: A National Chemistry and Materials Synchrotron Research Facility at the Advanced Photon Source

能源部化学部、材料研究部和基础能源科学办公室的化学研究仪器和设施项目为芝加哥大学的P. James Viccaro和Stuart Rice、纽约州立大学石溪分校的Benjamin Chu、纽约州立大学的菲利普·科彭斯芝加哥伊利诺伊大学的布法罗和马克·施洛斯曼在阿贡国家实验室利用ChemMatCARS光束线进行的研究工作实验室高级光子源。 PI将在三个站点完成开发并启动运行阶段：站点15-1D-B的化学晶体学;站点15-1D-C的表面散射;以及站点15-1D-D的小角-广角X射线散射（SAXS/WAXD）。 一些表面研究的例子包括在水蒸气界面的两亲物和生物大分子的研究;液态金属界面;超流体氦表面;聚合物表面静态结构;界面动力学;和液-液界面。 化学晶体学研究包括同步辐射电荷密度的映射;共振衍射研究;和瞬态物种的研究。 SAXS/WAXD研究将集中在纤维和长丝加工;聚合物和纤维拉伸;蛋白质折叠和络合动力学。 该奖项将提供维护，操作，选择升级和持续发展这一独特的资源作为化学和材料科学界的国家用户设施。 目前，用户社区包括40多名主要调查员。 到运行的第三年年底，至少有45%的总波束时间将提供给整个社区。 此外，该设施还为博士后职位提供部分资金，并为首次使用者和需要在该设施长期停留的研究生提供旅行支持。

The Chemistry Research Instrumentation and Facilities Program in the Chemistry Division, the Division of Materials Research and the Office of Basic Energy Sciences at the Department of Energy provide continuing support to P. James Viccaro and Stuart Rice of the University of Chicago, Benjamin Chu of SUNY-Stony Brook, Philip Coppens of SUNY-Buffalo and Mark Schlossman of the University of Illinois in Chicago for their research efforts utilizing the ChemMatCARS beamline at the Argonne National Lab Advanced Photon Source. The PIs will complete development and initiate the operations phase at the three stations: chemical crystallography in station 15-1D-B; surface scattering in station 15-1D-C; and small angle- wide angle X-ray scattering (SAXS/WAXD) in 15-1D-D. Examples of some of the surface studies include studies of amphiphiles and biological macromolecules at the water-vapor interface; liquid metal interfaces; superflid helium surfaces; polymer surfaces-static structure; dynamics at interfaces; and liquid-liquid interfaces. Chemical crystallography studies include the mapping of charge densities with synchrotron radiation; resonance diffraction studies; and the study of transient species. The SAXS/WAXD studies will focus on fiber and filament processing; polymer and fiber stretching; and protein folding and kinetics of complexation. This award will provide maintenance, operation, selected upgrades and continued development of this unique resource as a national user facility for the chemical and materials science community. Presently, the user community includes more than forty principal investigators. By the end of the third year of operations, at least forty-five percent of the total beamtime will be available to the community at large. In addition, this facility provides partial funding of postdoctoral positions and travel support for first time users and graduate students who require an extended stay at the facility.