High Throughput Structure Determination for Low Thermal Noise Coatings

低热噪声涂层的高通量结构测定

• 批准号: 2011782
• 负责人: Martin Fejer
• 金额: $ 27万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-01 至 2023-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2011782&HistoricalAwards=false
• 关键词: Throughput; Structure; Determination; Low; Thermal

This award supports research in relativity and relativistic astrophysics and it addresses the priority areas of NSF's "Windows on the Universe" Big Idea. The now weekly observations of gravitational waves from coalescing black holes and neutron stars by the Advanced LIGO and Advanced Virgo interferometers represent a new era of astrophysics, launched by the first detection four years ago. Planned upgrades to Advanced LIGO, in addition to planned future generations of international gravitational wave observatories, will seek to extend the range of the detectors and enable further discoveries within gravitational wave astronomy. However, all future detector upgrades and concepts rely on the development of new mirror coating materials to reduce thermal noise. The PI's group at Stanford has efforts devoted to theoretical and experimental studies to develop a better understanding of the structure of amorphous coatings to help guide the search for improved coatings with lower thermal noise. This research program will significantly enhance our ability to collect atomic structure data at the Stanford Synchrotron Radiation Laboratory (SSRL) in collaboration with SSRL scientists, and will accelerate our ability to find coating materials with lower thermal noise. Recent progress in determining lower thermal noise coatings has been realized from the determination of the atomic structure of amorphous oxide films through X-ray scattering methods at SSRL. This data is used as experimental input to molecular dynamics modeling to study the atomic structure, identify the mechanisms responsible for coating thermal noise, and identify ways of reducing their effects. The proposed program addresses the opportunity to develop, in conjunction with collaborators at the SLAC National Accelerator Laboratory, an improved beamline at SSRL and with it initiate high-throughput Grazing-Incidence X-ray Pair Distribution Function (GIPDF) measurements to speed the rate at which we can recover structural information on new coating materials.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项支持相对论和相对论天体物理学的研究，并介绍了NSF“宇宙上的Windows”的优先领域。从四年前的第一个检测中发起的，先进的Ligo和先进的处女座干涉仪，现在每周观察到来自先进的处女座干涉仪与高级处女座干涉仪相聚的重力波的观察。除了计划的未来后代国际引力波观测站外，计划对高级LIGO的升级将寻求扩展探测器的范围，并在引力波天文学内进一步发现。但是，所有未来的检测器升级和概念都依赖于新镜涂料材料的开发来减少热噪声。斯坦福大学的PI小组致力于理论和实验研究，以更好地了解无定形涂层的结构，以帮助指导搜索较低的热噪声的改进涂层。 该研究计划将显着增强我们与SSRL科学家合作，在斯坦福同步辐射实验室（SSRL）收集原子结构数据的能力，并将加速我们找到具有较低热噪声的涂层材料的能力。通过SSRL的X射线散射方法测定了无定形氧化物膜的原子结构，确定较低的热噪声涂层的最新进展。该数据用作分子动力学建模的实验输入，以研究原子结构，确定负责涂层热噪声的机制，并确定降低其效果的方法。拟议的计划解决了与SLAC国家加速器实验室的合作者一起开发的机会，在SSRL上进行了改进的光束线，并启动了高通量放牧X射线配对函数（GIPDF）测量的高通量放牧X射线配对函数（GIPDF）测量，以加速我们可以通过对新的套餐进行恢复的供应材料。基金会的智力优点和更广泛的影响审查标准。