WAXS CAMERA COMMISSIONING

WAXS 相机调试

• 批准号: 7954914
• 负责人: LIANG GUO
• 金额: $ 0.65万
• 依托单位: ILLINOIS INSTITUTE OF TECHNOLOGY
• 依托单位国家: 美国
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7954914
• 关键词: Biophysics; Buffers; Computer Retrieval of Information on Scientific Projects Database; Development; Funding; Grant; Helium; Institution; Length; Modification; Monitor; Performance; Research; Research Personnel; Resources; Signaling Protein; Solutions; Source; Testing; United States National Institutes of Health; Vacuum; instrument

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. One of the proposed core developments was a dedicated WAXS instrument with a wider q  range than our present instrument. A new WAXS camera of flight path 430 mm in helium was tested for its performance. It was found that the 430 mm path length is too long to be used in helium; background scattering from helium cannot be properly removed. Modifications are in progress so that the WAXS camera may be used in vacuum. A photo-diode array beam intensity monitor was also tested with scattering signals of protein solution and buffer background and the performance of the intensity monitor was evaluated. The results show that further improvements are needed for the intensity monitor to be used in actual SAXS applications.

该副本是利用众多研究子项目之一 由NIH/NCRR资助的中心赠款提供的资源。子弹和 调查员（PI）可能已经从其他NIH来源获得了主要资金， 因此可以在其他清晰的条目中代表。列出的机构是 对于中心，这不一定是调查员的机构。 拟议的核心开发之一是一种专用的蜡仪器，其Q范围比我们目前的仪器更宽。测试了一辆新型的飞行路径430毫米氦气摄像头的性能。 发现430毫米路径长度太长，无法在氦中使用。无法正确去除氦气的背景散射。 进行修改正在进行中，因此可以在真空中使用蜡像摄像头。还通过蛋白质溶液和缓冲液背景的散射信号测试了光二极管阵列光束强度监视器，并评估了强度监视器的性能。 结果表明，在实际SAXS应用程序中使用强度监视器需要进一步改进。