MRI: The UNF-FSU Neutron Detector Array RESONEUT for Rare Ion Beams

MRI：用于稀有离子束的 UNF-FSU 中子探测器阵列 RESONEUT

• 批准号: 1126345
• 负责人: Dennis Gay
• 金额: $ 14.35万
• 依托单位: University of North Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-15 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1126345&HistoricalAwards=false
• 关键词: MRI; UNF; FSU; Neutron; Detector

This award will develop a new type of low-energy neutron detector array, which is to be used at the Resolut radioactive beam facility of Florida State University (FSU). The proposed detector systems use a combination of a p-Terphenyl crystal with a novel type of compact "Planacon" photo multiplier to achieve high sensitivity for low energy neutrons and pulse-shape discrimination to suppress gamma-ray and X-ray background. Four prototype-systems for these detectors have been assembled and tested at FSU. This proposal seeks to acquire all components required for a detector array of twelve detectors, which will be assembled and tested by undergraduate researchers at the University of North Florida (UNF). The complete system will be commissioned in experiments at the John D. Fox accelerator laboratory of Florida State University. The detector array will enable an experimental program to study proton-resonances in the astrophysical rapid proton capture process(rp-process), which will create further opportunities for involvement of UNF undergraduate students in research projects.The integration of the novel low-energy neutron detector array into the Resolut radioactive beam facility of Florida State University will enable the efficient detection of the remaining neutron from a nuclear collision in which the proton in a deuteron is transferred to an incident heavier nucleus. Such reactions are used as surrogates for studying and calibrating nuclear reaction rates for the rapid proton captures by nuclei that constitute the rp-process which is considered to be a component of explosive stellar nucleosynthesis. This project will provide transformational learning opportunities for undergraduate researchers at UNF who will assemble and test the detector systems, participate in the subsequent commissioning experiments for the neutron detector array at the John D. Fox accelerator laboratory, and analyze data from the commissioning experiments. Following completion of this project, UNF faculty and undergraduates will continue to collaborate on experiments with the nuclear physics group at FSU and the neutron detector array will be available to all users of the Resolut facility.

该合同将开发一种新型的低能中子探测器阵列，用于佛罗里达州立大学（FSU）的Resolut放射性束设施。所提出的探测器系统使用一种新型的紧凑型的“Planacon”光电倍增管的p-三联苯晶体的组合，以实现低能量中子和脉冲形状的歧视，以抑制伽马射线和X射线背景的高灵敏度。这些探测器的四个原型系统已经在FSU组装和测试。该提案旨在获得12个探测器的探测器阵列所需的所有组件，这些组件将由北佛罗里达大学（UNF）的本科研究人员组装和测试。完整的系统将在约翰·D·实验室进行实验调试。佛罗里达州立大学福克斯加速器实验室。 探测器阵列将使一个实验计划，研究质子共振在天体物理快速质子捕获过程（RP-过程），这将为联合国基金会的本科生参与研究项目创造更多的机会。在佛罗里达州立大学的Resolut放射性束设施中安装一个高能中子探测器阵列，将能够有效地探测核碰撞产生的剩余中子其中氘核中的质子被转移到入射的更重的原子核中。这种反应被用来作为研究和校准快速质子捕获的核反应速率的替代品，构成了被认为是爆炸性恒星核合成的一个组成部分的rp过程。 该项目将为UNF的本科研究人员提供转型学习机会，他们将组装和测试探测器系统，参与John D.福克斯加速器实验室，并分析数据的调试实验。 该项目完成后，联合国基金会教职员工和本科生将继续与前苏联核物理小组合作进行实验，并将向Resolut设施的所有用户提供中子探测器阵列。