Development of Ultra-High-Flux Synchrotron Radiation Beamlines for Real-Time Structural Dynamics Studies of Materials

9970838布鲁克康奈尔大学将建立一个新的超高通量同步加速器x射线束线（g线），其中有三个优化的实验站，用于研究动态发展的材料，包括薄膜生长，图案表面，电化学界面，聚合物，液晶，生物材料和具有新型电子特性的系统。该光束线将成为世界上通量最高的光束线之一，将利用康奈尔电子存储环（CESR）以前未使用的辐射；美国国家科学基金会支持的高能物理环，为CHESS（康奈尔高能同步加速器源）提供能量。CESR计划在未来一年进行升级，为在不中断高能物理或CHESS x射线用户程序的情况下构建新的光束线提供了难得的机会。康奈尔大学将提供大约210万美元用于地下建设，以容纳新的光束线和x射线站。该提案的核心是认识到操作x射线源，设计，建造和支持光束线，以及在材料研究中开展前沿研究项目需要专门的多学科团队和不同的人才。第二个动机是光束线的中心校园位置，它允许各级学生的培训和参与，否则难以实现。为了以成本和时间效益的方式实现该提案的目标，该项目将利用康奈尔大学教师、学生和国际象棋工作人员的专业知识和兴趣，他们在多学科团队中工作的强大传统，以及康奈尔大学的许多特殊实验设施，为材料生长、加工和表征的研究创造一个全面的教育环境。在康奈尔大学材料研究中心（CCMR）的支持下，这些光束线将在康奈尔大学校园内的各种主要材料研究设施之间形成联系。新成立的CCMR从nsf资助的MRSEC（以前的MRL）发展而来，现在协调校园内的材料研究设施。虽然新的波束线将与现有的CHESS波束线分开运行，但CCMR和CHESS将密切合作，协调G-line的技术和科学操作。作为对国际象棋在建设和支持方面的帮助的交换，国际象棋将利用大约20%的空间站时间用于其外部用户程序。这一建议的成功实施带来的好处包括：(1)创造了一个独特的教育环境，以培养未来以材料为导向的同步辐射科学家；(2)建设一个强大的x射线资源，这将导致对技术重要领域材料动态演变的新见解；(3)增加国际象棋的可用性，这是一个非常成功和超额认购的国家设施。该项目由材料研究司和多学科活动办公室（数学和物理科学局）以及生物基础设施司（生物科学局）共同支持。

9970838BrockCornell University will construct a new ultra-high flux synchrotron x-ray beamlines (the G-lines) with three experimental stations optimized to study dynamically evolving materials, including thin film growth, patterned surfaces, electrochemical interfaces, polymers, liquid crystals, biomaterials, and systems with novel electronic properties. The beamlines, which will be among the highest flux beamlines in the world, will make use of previously unused radiation produced by the Cornell Electron Storage Ring (CESR); the NSF-supported high-energy physics ring which feeds CHESS (Cornell High Energy Synchrotron Source). Upgrades planned for CESR in the coming year provide a rare window of opportunity to construct new beamlines without interrupting the high-energy physics or CHESS x-ray user programs. Cornell University will provide the estimated $2.1M for the underground construction needed to house the new beamlines and x-ray stations.Central to this proposal is the recognition that operating an x-ray source, designing, building and supporting beamlines, and carrying out frontier research programs in materials research requires dedicated multi-discplinary teams with diverse talents. A second motivation is the central campus location of the beamlines, which allows a level of training and involvment of all levels of students which is otherwise difficult to achieve. To fulfill the goals of this proposal in a cost- and time-effective manner, this project will draw on the combined expertise and interests of the Cornell faculty, students and CHESS staff, their strong tradition of working in multi-disciplinary teams, and the many special experimental facilities at Cornell that create a comprehensive educational environment for the study of materials growth, processing, and characterization.The beamlines will form a nexus among the various major materials research facilities on the Cornell campus that fall under the auspices of the Cornell Center for Materials Research (CCMR). Newly formed, CCMR grew out of the NSF-funded MRSEC (formerly MRL) and now coordinates materials research facilities across the campus. Although the new beamlines will be operated separately from the existing CHESS beamlines, CCMR and CHESS will work closely to coordinate the technical and scientific operations of G-line. In exchange for its help in construction and support, CHESS will utilize some 20% of the station time for its outside user program.Among the benefits accruing from the successful execution of this proposal are (1) The creation of a unique educational environment to train the materials-oriented synchrotron radiation scientists of tomorrow; (2) The construction of a powerful x-ray resource that will result in new insights into the dynamical evolution of materials in technologically important areas, and (3) An increase in availability of CHESS, a highly successful and over-subscribed national facility.This project is jointly supported by the Division of Materials Research and the Office of Multidisciplinary Activities (Directorate for Mathematical and Physical Sciences), and the Division of Biological Infrastructure (Directorate for Biological Sciences).