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

9970838布罗克·康奈尔大学将建造一个新的超高通量同步X射线光束线(G-LINE)，其中三个实验站经过优化，用于研究动态演变的材料，包括薄膜生长、图案化表面、电化学界面、聚合物、液晶、生物材料和具有新型电子性能的系统。这些光束线将是世界上通量最高的光束线之一，它将利用康奈尔电子存储环(CESR)以前未使用过的辐射；CESR是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。计划在来年进行的CESR升级提供了一个难得的机会之窗，可以在不中断高能物理或国际象棋x射线用户程序的情况下建造新的光束线。康奈尔大学将提供约210万美元用于地下建设，以容纳新的光束线和X射线站。这项提议的核心是认识到，运营X射线源、设计、建造和支持光束线，以及开展材料研究的前沿研究计划，需要具有不同人才的专业多学科团队。第二个动机是光束线在校园中心的位置，这允许各级学生进行一定程度的培训和参与，否则很难实现这一点。为了以经济高效的方式实现这项建议的目标，该项目将利用康奈尔大学教职员工、学生和国际象棋工作人员的共同专业知识和兴趣，他们在多学科团队中工作的强大传统，以及康奈尔大学许多特殊的实验设施，这些设施为研究材料生长、加工和表征创造了一个全面的教育环境。光束线将在康奈尔大学校园内由康奈尔材料研究中心(CCMR)赞助的各种主要材料研究设施之间建立联系。新成立的CCMR由NSF资助的MRSEC(前身为MRL)发展而来，现在负责协调整个校园的材料研究设施。尽管新的光束线将与现有的国际象棋光束线分开运营，但CCMR和CHESS将密切合作，协调G-LINE的技术和科学运营。作为帮助建设和支持的交换，国际象棋公司将利用空间站约20%的时间用于外部用户程序。成功执行这一建议所产生的好处包括：(1)创造了一个独特的教育环境，以培养未来面向材料的同步辐射科学家；(2)建造一个强大的X射线源，这将对重要技术领域的材料的动态演化有新的见解；(3)增加国际象棋的可用性，这是一项非常成功和超额认购的国家设施。该项目由材料研究和多学科活动办公室(数学和物理科学局)和生物基础设施司(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).