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

用于基于摆动器的同步加速器 X 射线材料研究和学生培训的单色仪的开发

• 批准号: 0114094
• 负责人: Joel Brock
• 金额: $ 41.59万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-03-01 至 2005-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0114094&HistoricalAwards=false
• 关键词: Development; Monochromators; Wiggler; Based; Synchrotron

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.

该奖项来自材料研究仪器项目，用于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：(1)开发针对高功率摇摆器产生的X射线束的相对大光点尺寸和角发散度进行优化的透射模聚焦X射线单色器；(2)开发在本地合成高质量定时信号所需的电子设备，该信号可用于与同步加速器的电子束结构同步(超快)激光脉冲；以及(3)开发聚焦不对称切割布拉格单色器以压缩用于小角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结构测量，并将永久安装在CHESS目前正在建设的新的同步加速器x射线束线(G线)上。该设施的中心校区位置使其主要由来自不同学科的研究生组成，创造了一个全面的教育和推广环境。该奖项来自材料仪器研究计划，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，旨在充分利用国际象棋中三条新光束线(G线)产生的强大X射线光束。这些设备将用于对动态演变的材料的原子尺度结构进行时间分辨测量。国际象棋学院位于康奈尔大学的中心校区，能够为所有层次的学生提供实操培训和参与，这在其他地方是难以实现的。事实上，G-Line的工作人员主要是来自各种科学和工程学科的研究生，他们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，并积极参与与当地社区的接触，主要是与K-12年级的学生及其教师合作。最终的结果是一个全面的教育和多学科研究环境，对所有级别的学生都是可用的。