100-ELEMENT GE DETECTOR SYSTEM FOR X-RAY ABSORPTION SPECTROSCOPY

用于 X 射线吸收光谱的 100 元件 GE 探测器系统

• 批准号: 8170071
• 负责人: BRITT HEDMAN
• 金额: $ 10.51万
• 依托单位: STANFORD UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-05-01 至 2011-02-28
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8170071
• 关键词: Advisory Committees; Applications Grants; Area; Biological; Collection; Computer Retrieval of Information on Scientific Projects Database; Computer software; Development; Elements; Fluorescence; Funding; Germanium; Goals; Grant; Individual; Institution; Measurement; Performance; Positioning Attribute; Research; Research Personnel; Resolution; Resources; Sampling; Signal Transduction; Source; Spectrum Analysis; System; United States National Institutes of Health; Work; absorption; base; detector; programs

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. Development work on large-scale detector arrays for XAS measurements reached the performance goals defined in the grant application for the current program period, and a purchase requisition was placed after approval by the SMB Advisory Committee. The detector is for XAS measurements of ultra-dilute biological samples on SSRL?s beam line 9-3. It is based on 100 ea of 5 mm x 5 mm Ge detector elements fabricated as monolithic elements on one substrate crystal. They are therefore spatially arranged without any dead space in between, enhancing the collection area of the fluorescence signal. Having many smaller elements enhances the count-rate capability. With an energy resolution representative of array detectors consisting of individual elements, the performance of this new detector is expected to be outstanding. The monolithic arrangement furthermore enables the detector to be positioned as close as possible to the sample, as it will have a narrow front end. Delivery (from Canberra, Inc.) took place in summer 2009 and extensive software and alignment hardware developments has ensued. The detector is currently in commissioning.

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。 大规模探测器阵列的开发工作达到了当前计划期限授予申请中定义的绩效目标，并在SMB咨询委员会批准后提出了采购申请。 该检测器用于SSRL？S Beam Line 9-3上超稀释生物样品的XAS测量。它基于5 mm x 5 mm ge检测器元件的100 Ea，该元件在一个底物晶体上构成了整体元素。 因此，它们在空间上排列，没有任何死空间，从而增强了荧光信号的收集面积。 具有许多较小的元素可以增强计数率能力。 凭借由由个别元素组成的阵列检测器的能量分辨率，该新检测器的性能有望是出色的。 整体排列还使检测器的位置尽可能靠近样品，因为它的前端狭窄。 （来自堪培拉公司的交付）于2009年夏季进行，随之而来的是广泛的软件和一致性硬件开发。 该探测器目前正在调试中。