Development of a Current-Mode CsI Gamma Detector Array for Precision Weak Interaction Experiments

用于精密弱相互作用实验的电流模式 CsI 伽马探测器阵列的开发

• 批准号: 0116146
• 负责人: William Snow
• 金额: $ 34.41万
• 依托单位: Indiana University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-10-01 至 2003-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0116146&HistoricalAwards=false
• 关键词: Development; Current; Mode; CsI; Gamma

In addition to the strong interaction between neutrons and protons which binds them in the nucleus, there is also a "weak" interaction. The precise strength ofthis interaction between neutrons and protons is not known, andcurrent results from different experiment are contradictory.However, the weak interaction is known to possess the uniqueproperty of causing reactions that look different in a mirror.We intend to construct a detector which can sensepart-per-billion mirror asymmetries in reactions involving neutrons and protons that produce gamma rays. This detectorwill first be used in an upcoming experiment at the LANSCE pulsed neutronsource at Los Alamos which will detect the mirror asymmetry in neutron captureon protons. It will be designed and constructed at the Indiana University Cyclotron Facility.

除了中子和质子之间的强相互作用将它们束缚在原子核中之外，还有一种“弱”相互作用。中子和质子之间的这种相互作用的精确强度还不清楚，目前不同实验的结果也是相互矛盾的。然而，弱相互作用具有独特的性质，可以引起在镜子中看起来不同的反应。我们打算建造一个探测器，它可以在产生伽马射线的中子和质子反应中检测到十亿分之一的镜子不对称性。该探测器将首先用于即将在洛斯阿拉莫斯的LANSCE脉冲中子源的实验中，该实验将探测质子上中子捕获的镜像不对称性。它将在印第安纳州大学回旋加速器设施设计和建造。