Realization of a magnetically shielded environment for a new measurement of the electric dipole moment of the neutron at the FRM-II and investigations of magnetic field related systematic effects

实现 FRM-II 中子电偶极矩新测量的磁屏蔽环境以及磁场相关系统效应的研究

• 批准号: 168143150
• 负责人: Professor Dr. Peter Fierlinger
• 金额: --
• 依托单位: Arbeitsgruppe Hadronenstruktur und Fundamentale Symmetrien
• 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 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/168143150?language=en
• 关键词: Realization; magnetically; shielded; environment; new

A new generation experiment to measure a limit for the electric dipole moment of the neutron (nEDM) on the 10-28 e(cm level requires magnetic shielding on an unprecedented level. Due to its magnetic moment, the neutron is affected by the earth magnetic field as well as by other ambient magnetic field fluctuations and gradients. in this proposal the realization of a state-of-the art magnetically highly shielded environment for precision experiments with neutrons with focus on the nEDM measurement is presented. To establish such an environment, a detailed design and accurate control of fabrication procedures is required. inside the shield, magnetic fields need to be generated with high precision, requiring the implementation of various means of magnetometry. This is accompanied by experimental and theoretical studies of magnetic field related systematic effects on the measurement of the nEDM.

一个新一代实验，以测量中子（NEDM）在10-28 e上的电偶极矩的极限（CM水平需要磁性屏蔽在前所未有的水平上。由于其磁矩，中子会受到地球磁场的影响以及其他环境磁场波动，并在此提案中遇到了较高的ART范围。提出了NEDM的测量，以建立这样的环境，需要对屏蔽层进行详细的设计，需要高精度产生磁场，这需要对磁场的实验和理论研究，以实现各种磁性。