Proton spectroscopy with PERC for precision measurements of the angular correlation coefficient alpha in neutron beta-decay

使用 PERC 的质子能谱精确测量中子 β 衰变中的角相关系数 α

• 批准号: 167716490
• 负责人: Professor Dr. Werner Heil
• 金额: --
• 依托单位: Institut für Physik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2016-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/167716490?language=en
• 关键词: Proton; spectroscopy; PERC; precision; measurements

In this project the structure and nature of weak interaction and possible extensions of the Standard Model of elementary particle physics are investigated, addressed by precise studies of neutron beta decay. These studies require a very brilliant source of decay products, i.e., a large active decay volume inside a neutron guide. Within priority area B of the new Priority Program 1491, a new facility, called PERC, will provide a well-defined beam of decay electrons and protons, improving the count rates for adjacent neutron decay correlation experiments by two orders of magnitude. The first milestone for this project is the design and construction of the instrument PERC with emphasis on its use as a spectrometer for decay protons. This selected decay channel of PERC will be fed into an adapted and upgraded spectrometer which is based on the aSPECT proton retardation spectrometer. In the second funding period, angular correlation experiments will be performed with PERC as pre- and aSPECT as post-spectrometer for protons.

在这个项目中，弱相互作用的结构和性质以及基本粒子物理学标准模型的可能扩展被研究，通过中子β衰变的精确研究来解决。这些研究需要一个非常辉煌的衰变产物来源，即，中子导管内的一个大的活跃衰变体积。在新的优先计划1491的优先领域B内，一个名为PERC的新设施将提供一个定义明确的衰变电子和质子束，将相邻中子衰变相关实验的计数率提高两个数量级。该项目的第一个里程碑是设计和建造仪器PERC，重点是将其用作衰变质子的光谱仪。该选定的PERC衰变通道将被馈送到基于aSPECT质子延迟光谱仪的经调整和升级的光谱仪中。在第二个资助期内，将使用PERC作为质子前光谱仪和aSPECT作为质子后光谱仪进行角相关实验。