Workshops on Science enabled by a Coherent, CW, Synchrotron X-ray Source

由相干、连续、同步加速器 X 射线源支持的科学研讨会

• 批准号: 1068675
• 负责人: Joel Brock
• 金额: $ 6万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1068675&HistoricalAwards=false
• 关键词: Workshops; Science; enabled; Coherent; CW

This award supports a series of six (6) workshops on the Cornell University Campus in June 2011. The workshops will explore the scientific potential of a continuous-duty, coherent (fully diffraction-limited), hard (l1.5 Å) synchrotron x-ray source. A continuous-duty source (or CW source) is one that delivers x-rays in a continuous train of pulses at rates exceeding a million per second. CW hard x-ray sources will enable a variety of new coherent and nanobeam experiments that cannot be done otherwise. Such sources include ultimate storage rings, energy recovery LINACs (ERLs), and high-repetition-rate x-ray free-electron lasers (X-FELs). Fully coherent hard x-ray sources will enable revolutionary new techniques for examining non-crystalline and time evolving systems on atomic length scales and in femtoseconds time scale.Recently, a large effort has gone into developing techniques utilizing coherent x-ray beams produced by pulsed X-FELs (e.g., FLASH and LCLS). These are more suitable to single shot measurements. This workshop focuses on measurements which require more photons than are available in a single shot or which need to probe the same sample repetitively. The community is just beginning to explore which types of measurements and science are best performed on low-duty-cycle pulsed X-FELs and which are best performed on CW sources. The Workshop will engage the community in developing ideas for the science case of fully coherent CW hard x-ray sources. Talks and organizers summaries of the discussions will be made broadly available through the World Wide Web. Funds from the National Science foundation support participation of students, postdocs, and young scientists from a broad range of discipline, including members of underrepresented groups in science and engineering, and minority serving institutions. The workshop is jointly funded by programs and divisions from two NSF directorates, Biosciences, and the Mathematical and Physical Sciences Directorate (Chemistry, Division of Materials Research, Physics and the Office of Multidisciplinary Activities).

该奖项支持 2011 年 6 月在康奈尔大学校园举办的一系列六 (6) 研讨会。研讨会将探讨连续工作、相干（完全衍射限制）、硬 (l1.5 Å) 同步加速器 x 的科学潜力连续工作源（或 CW 源）是一种以每秒超过 100 万次的速率连续发射 X 射线的源，CW 硬 X 射线源将实现各种新的相干 X 射线源。此类源包括终极存储环、能量回收直线加速器 (ERL) 和高重复率 X 射线自由电子激光器 (X-FEL)。实现了在原子长度尺度和飞秒时间尺度上检查非晶体和时间演化系统的革命性新技术。最近，人们投入了大量精力来开发利用产生的相干 X 射线束的技术脉冲 X-FEL（例如 FLASH 和 LCLS）更适合单次测量。本研讨会重点讨论需要比单次可用的光子更多的测量或需要重复探测同一样本的测量。刚刚开始探索哪些类型的测量和科学最适合在低占空比脉冲 X-FEL 上执行以及哪些类型最适合在 CW 源上执行。该研讨会将让社区参与开发完全相干 CW 科学案例的想法。难的演讲和讨论的组织者摘要将通过万维网广泛发布。国家科学基金会的基金支持来自广泛学科的学生、博士后和年轻科学家的参与，包括代表性不足的成员。该研讨会由两个 NSF 理事会、生物科学理事会以及数学和物理科学理事会（化学、材料研究部、物理部和办公室）的项目和部门共同资助。多学科活动）。