散裂中子源上的中子电偶极矩实验
核实验
2020-01-08 v3 仪器与探测器
摘要
要在中子电偶极矩实验灵敏度上实现下一次重大飞跃，无论是在统计量还是系统误差控制方面，都需要新颖的实验技术。散裂中子源上的 nEDM 实验 (nEDM@SNS) 将采用 Golub 与 Lamoreaux 的方案 [Phys. Rep., 237, 1 (1994)]。将利用极化超冷中子、极化 He 与超流体 He 相结合的唯一性质，提供约 的灵敏度。我们的低温装置将部署两个小型 () 测量池，其中产生并原位自旋分析高密度超冷中子。与先前室温 Ramsey 测量相比，电场强度、进动时间、磁屏蔽和探测到的 UCN 数目都将增强。我们的 He 共磁强计提供了对系统效应的独特控制，特别是 Bloch-Siegert 诱导的假 EDM。此外，将有自由进动和修饰自旋两种不同测量模式，这将为我们的结果提供重要的自检。在五年“关键部件演示”之后，我们的合作项目于 2018 年转入“大规模集成”阶段。本会议录描述了我们的测量技术、实验设计概述及简要进展。
引用
@article{arxiv.1903.02700,
title = {The neutron electric dipole moment experiment at the Spallation Neutron Source},
author = {K. K. H. Leung and M. Ahmed and R. Alarcon and A. Aleksandrova and S. Baeßler and L. Barrón-Palos and L. Bartoszek and D. H. Beck and M. Behzadipour and J. Bessuille and M. A. Blatnik and M. Broering and L. J. Broussard and M. Busch and R. Carr and P. -H. Chu and V. Cianciolo and S. M. Clayton and M. D. Cooper and C. Crawford and S. A. Currie and C. Daurer and R. Dipert and K. Dow and D. Dutta and Y. Efremenko and C. B. Erickson and B. W. Filippone and N. Fomin and H. Gao and R. Golub and C. R. Gould and G. L. Greene and D. G. Haase and D. Hasell and A. I. Hawari and M. E. Hayden and A. T. Holley and R. J. Holt and P. R. Huffman and E. Ihloff and T. M. Ito and J. Kelsey and Y. J. Kim and J. Koivuniemi and E. Korobkina and W. Korsch and S. K. Lamoreaux and E. Leggett and A. Lipman and C. -Y. Liu and J. Long and S. W. T. MacDonald and M. Makela and A. Matlashov and J. Maxwell and M. McCrea and M. Mendenhall and H. O. Meyer and R. Milner and P. Mueller and N. Nouri and C. M. O'Shaughnessy and C. Osthelder and J. -C. Peng and S. Penttila and N. S. Phan and B. Plaster and J. Ramsey and T. Rao and R. P. Redwine and A. Reid and A. Saftah and G. M. Seidel and I. F. Silvera and S. Slutsky and E. Smith and W. M. Snow and W. Sondheim and S. Sosothikul and T. D. S. Stanislaus and X. Sun and C. M. Swank and Z. Tang and R. Tavakoli Dinani and E. Tsentalovich and C. Vidal and W. Wei and C. R. White and S. E. Williamson and L. Yang and W. Yao and A. R. Young},
journal= {arXiv preprint arXiv:1903.02700},
year = {2020}
}
备注
Submitted to proceedings of PPNS 2018 - International Workshop on Particle physics at Neutron Sources (https://www.webofconferences.org/epj-web-of-conferences-forthcoming-conferences/1148-ppns-2018)