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计划，支持康奈尔高能同步加速器源（CHESS）的仪器开发。 本计画的目标是：（1）研制一种透射式聚焦x光单色仪，以适应大功率扭摆器产生的x光束的较大光斑尺寸和角发散;（2）研制一种电子学器件，用以在本地合成高质量的定时信号，用于同步（超快）激光脉冲与同步加速器的电子束团结构;和（3），开发聚焦非对称切割布拉格单色器，以压缩用于小角度X射线散射应用的X射线束。这些设备将用于对动态演变的材料进行时间分辨的结构测量，并将永久安装在目前正在CHESS建造的新同步加速器X射线束线（G线）上。该设施的中心校园位置使其能够主要由来自各种学科的研究生组成，创造一个全面的教育和推广环境。该奖项来自材料研究计划的仪器，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射线光学器件，旨在充分利用强大的X射线源，由国际象棋的三条新光束线（G线）产生的X射线光束。这些设备将用于对动态演化材料的原子尺度结构进行时间分辨测量。国际象棋的位置在康奈尔大学的中心校园，使动手培训和参与各级学生的水平，这是很难实现其他地方。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。这些学生参与了光束线建设的所有阶段，并积极参与当地社区的外联活动，主要与K-12学生及其教师合作。最终的结果是一个全面的教育和多学科的研究环境，可供各级学生使用。

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.