标题： 中子电偶极矩实验使用TRIUMF的先进超冷中子源 显示英文标题

标题： Neutron EDM Experiment with an Advanced Ultracold Neutron Source at TRIUMF

摘要： TRIUMF超冷先进中子（TUCAN）合作组一直在开发一种高强超冷中子（UCN）源，旨在寻找中子电偶极矩（EDM），其灵敏度目标为 $10^{-27}\ e{\rm cm}$。 本文报告了UCN源的调试进展以及中子EDM光谱仪的开发情况。 在最终配置中，加速器驱动的超热UCN源将使中子EDM实验的统计量比当前最佳实验提高两个数量级。 2024年取得了重大进展，使合作组能够运行完整的源系统，除液态氘冷中子 moderator 外，从而实现了UCN的首次生产。 还介绍了EDM光谱仪的现状，重点介绍了与场控制、屏蔽和磁测量相关的UCN处理组件和磁性子系统。 显示英文摘要

摘要： The TRIUMF Ultracold Advanced Neutron (TUCAN) collaboration has been developing a high-intensity ultracold neutron (UCN) source aimed at searching for the neutron electric dipole moment (EDM) with a sensitivity goal of $10^{-27}\ e{\rm cm}$. This article reports on recent progress in commissioning of the UCN source and in the development of the neutron EDM spectrometer. In its final configuration, the accelerator-driven super-thermal UCN source will enable a neutron EDM experiment with two orders of magnitude improved statistics compared to the current best experiment. Substantial progress in 2024 allowed the collaboration to operate the complete source system, with the exception of the liquid deuterium cold moderator, resulting in the first production of UCNs. The status of the EDM spectrometer is also presented, with emphasis on UCN handling components and magnetic subsystems relevant to field control, shielding, and magnetometry.