Development of Monochromators for Wiggler-Based Synchrotron X-ray Studies of Materials and Student Training

该奖项来自材料研究仪器项目，支持康奈尔高能同步加速器源（CHESS）的仪器开发。本项目的三个目标是：(1)开发一种传输模式聚焦x射线单色仪，该单色仪针对高功率摆动器产生的x射线光束的相对较大的光斑尺寸和角散度进行了优化；(2)开发本地合成高质量定时信号所需的电子学，该信号可用于同步（超快）激光脉冲与同步加速器的电子束结构；(3)研制聚焦非对称切割布拉格单色仪，压缩x射线光束，用于小角度x射线散射。这些设备将用于对动态发展的材料进行时间分辨结构测量，并将永久安装在国际象棋中心目前正在建设的新的同步加速器x射线束流线上（g线）。该设施的中心校园位置使其主要由来自各种学科的研究生组成，创造了一个全面的教育和推广环境。该奖项来自材料研究仪器项目，支持康奈尔高能同步加速器源（CHESS）的仪器开发。该项目的目标是开发x射线光学，以充分利用国际象棋中心三条新光束线（g线）产生的强大x射线光束。这些装置将用于执行时间分辨的测量原子尺度结构的动态演变的材料。CHESS位于康奈尔大学的中心校区，这使得各个层次的学生都能进行实践培训和参与，这在其他地方很难实现。事实上，g线的工作人员主要是来自各种科学和工程学科的研究生，从事各种材料研究项目。这些学生参与了梁线建设的各个阶段，并积极参与到当地社区的推广工作中，主要是与K-12学生和他们的老师一起工作。最终的结果是一个全面的教育和多学科的研究环境，对所有层次的学生都是开放的。

This award from the Instrumentation for Materials Research program supports instrument development at the Cornell High Energy Synchrotron Source (CHESS). Thee goals of this project are: (1) to develop a transmission-mode focusing x-ray monochromator optimized for the relatively large spot size and angular divergence of the x-ray beams produced by a high power wiggler; (2) to develop the electronics required to synthesize locally a high-quality timing signal that can be used to synchronize (ultrafast) laser pulses with the electron bunch structure of the synchrotron; and (3), to develop a focusing asymmetric-cut Bragg monochromator to compress the x-ray beam for small angle x-ray scattering applications. These devices will be used to perform time-resolved structural measurements on dynamically evolving materials and will be permanently installed on the new synchrotron x-ray beam lines currently under construction at CHESS (the G-lines). The central campus location of this facility allows it to be staffed primarily by graduate students from a wide variety of disciplines, creating a comprehensive educational and outreach environment.This award from the Instrumentation for Materials Research program supports instrument development at the Cornell High Energy Synchrotron Source (CHESS).The goal of this project is to develop x-ray optics designed to take full advantage of the powerful x-ray beams produced by three new beam lines (the G-lines) at CHESS. These devices will be used to perform time-resolved measurements of the atomic scale structure of dynamically evolving materials. CHESS's location on the central campus of Cornell University enables a level of hands-on training and involvement of all levels of students which is difficult to achieve elsewhere. Indeed, the G-lines are staffed primarily by graduate students from a wide variety of scientific and engineering disciplines, working on a wide variety of materials research projects. These students have been involved in all phases of the construction of the beam lines and are heavily involved in outreach to the local community, working primarily with K-12 students and their teachers. The final result is a comprehensive educational and multi-disciplinary research environment that is accessible to students of all levels.