MRI: Acquisition of Digital Data Acquisition System for experiments in Nuclear Science

MRI：用于核科学实验的数字数据采集系统的采集

• 批准号: 0420778
• 负责人: Krzysztof Starosta
• 金额: --
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-10-01 至 2009-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0420778&HistoricalAwards=false
• 关键词: MRI; Acquisition; Digital; Data; System

The acquisition and implementation of a 680-channel Digital DataAcquisition System (DDAS) for the Segmented Germanium Array (SeGA) atthe National Superconducting Cyclotron Laboratory's (NSCL) allows theidentification of positions of interactions for gamma-rays within SeGAdetector crystals by pulse shape analysis of digitized signals. Spatialresolution in the detectors with the DDAS implemented will be at leastby a factor of two better than that achievable with the current analogelectronics.The SeGA photon spectrometer is a $2M instrument commissioned in 2001,and is currently the world's largest operational highly-segmentedhigh-purity germanium detector array for gamma-ray spectroscopy withfast exotic beams. SeGA is central to the research of five facultymembers, their postdocs, graduate students, and undergraduate studentsat Michigan State University and available to all users of the NSCL. Roughly half of all experiments approved by the NSCL's external ProgramAdvisory Committee (PAC) require SeGA for gamma-ray detection. Participating students will be exposed to the novel and potentapplications of the state-of-the-art digital technology and will have anopportunity to develop skills in signal processing, data analysis andcomputer programming.With the proposed DDAS, the SeGA array will be the world's first digitalphoton spectrometer for fast exotic beam spectroscopy, ahead of severalother efforts currently under consideration, preserving the currentworld-leading role of the NSCL's photon spectroscopy program.

美国国家超导回旋实验室（NSCL）为分段锗阵列（SeGA）采集和实现了一个680通道数字数据采集系统（DDAS），通过对数字化信号的脉冲形状分析，可以识别分段锗阵列（SeGA）探测器晶体内伽马射线的相互作用位置。采用DDAS的探测器的空间分辨率将至少比目前的模拟电子学所能达到的分辨率高两倍。SeGA光子光谱仪是2001年投入使用的价值200万美元的仪器，目前是世界上最大的高分段高纯度锗探测器阵列，用于快速外来光束的伽马射线光谱。SeGA是密歇根州立大学五名教职员工、他们的博士后、研究生和本科生的研究中心，nsl的所有用户都可以使用。NSCL外部项目咨询委员会（PAC）批准的所有实验中，大约有一半需要SeGA进行伽马射线探测。参与的学生将接触到最先进的数字技术的新颖和强大的应用，并将有机会发展信号处理，数据分析和计算机编程的技能。随着DDAS的提出，SeGA阵列将成为世界上第一个用于快速外来光束光谱的数字光子光谱仪，领先于目前正在考虑的其他几个努力，保持NSCL光子光谱计划目前世界领先的地位。