Creation of an Ultra-Fast Charge Division Imaging Detector

超快电荷分割成像探测器的创建

• 批准号: 9405098
• 负责人: Carl Colvard
• 金额: $ 30万
• 依托单位: Charles Evans & Associates
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-01 至 1997-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9405098&HistoricalAwards=false
• 关键词: Creation; Ultra; Fast; Charge; Division

9405098 Colvard Charge division detectors form am important class of detectors for quantitative imaging of low-intensity electron, ion, or photon beams. A common example is the resistive anode encoder (RAE), commonly used to create composition images in secondary-ion mass spectrometry (SIMS). A significant drawback of present RAD-type detectors is their limited maximun counting rate. This research project proposes to significantly increase the speed of these detectors by using a new electronic pulse processing approach and a novel interconnection scheme to reduce their pulse-counting dead time by a factor of ten. A Phase I study showed that it is possible to integrate the pulses and perform the necessary processing on pulses separated by as little as 30 ns. this Phase II research will study the incorporation of the fast pulse processing design into a functioning RAE detector, including the analysis of pulse propagation and ringing across voltage isolating connections. By pulling everything together, the product of this research will be a functioning prototype ultrafast position sensitive detector that can then be refined and commercialized in Phase III. ***

9405098科瓦德电荷分割探测器是一类重要的探测器，用于低强度电子束、离子束或光子束的定量成像。一个常见的例子是阻性阳极编码器(RAE)，它通常用于在二次离子质谱仪(SIMS)中创建组成图像。目前的RAD型探测器的一个显著缺点是其有限的最大计数速率。该研究项目提出了通过使用新的电子脉冲处理方法和新的互连方案来显著提高这些探测器的速度，以将它们的脉冲计数死区时间减少到原来的十分之一。第一阶段的研究表明，有可能对脉冲进行积分，并对间隔短至30 ns的脉冲进行必要的处理。这项第二阶段的研究将研究将快速脉冲处理设计融入正常工作的RAE探测器，包括分析脉冲在电压隔离连接上的传播和振铃。通过将一切整合在一起，这项研究的产品将成为功能正常的超快位置敏感探测器原型，然后可以在第三阶段进行改进和商业化。*