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).

该奖项于2011年6月在康奈尔大学校园举行了六（6）个研讨会。该研讨会将探讨连续的，连贯的（完全衍射限制），硬（L1.5Å）同步X射线源的科学潜力。连续的源（或CW来源）是在连续的脉冲列车中以超过每秒100万秒的速度提供X射线。 CW硬X射线源将启用各种新的连贯和纳米仪实验，否则无法进行。这样的来源包括终极存储环，能量回收的LINACS（ERL）和高重复率X射线自由电子激光器（X-FELS）。完全一致的硬X射线源将使革命性的新技术用于检查原子长度尺度和飞秒时间的非结晶和时间不断发展的系统。实际上，使用脉冲X-Fels（例如X-Fels（E.G.，flash和lcls）生成的相干X射线光束，使用相干的X射线光束进行了大量的努力。这些更适合单射击测量值。该研讨会的重点是比单镜头中所需的照片更多的照片，或者需要重复探测相同的样本。该社区刚刚开始探索哪种类型的测量和科学最好在低矮的循环脉冲X-Fels上执行，哪些是在CW来源上最好的。研讨会将吸引社区为完全连贯的CW硬X射线源的科学案例开发思想。会谈和组织者的讨论摘要将通过万维网广泛提供。国家科学基金会的资金支持来自广泛纪律的学生，博士后和年轻科学家的参与，包括科学和工程学领域的人数不足群体以及少数族裔服务机构。该研讨会由两个NSF局，生物科学和数学和物理科学局（化学，材料研究部，物理学和多学科活动办公室）共同资助。