在用于基础物理实验的超大型磁屏蔽室中实现超低且均匀的剩余磁场
仪器与探测器
2023-10-02 v1 高能物理 - 实验
核实验
摘要
对中子电偶极矩（nEDM）的高精度搜寻需要稳定且均匀的磁场环境。我们展示了在保罗·谢勒研究所 n2EDM 实验中用于磁屏蔽室（MSR）退磁与均衡的最新成果。经过大量研究，我们给出了将用于 n2EDM 的最终退磁配置。优化后的流程使剩余磁场降低了两倍。在 MSR 内，借助完整的磁场线圈系统并安装大型真空容器，实现了超低场。在约 1.4 m^3 的内腔体中，场现在更均匀且低于 300 pT。此外，该流程更快且向磁环境散发更少热量，进而将其热弛豫时间从 12 h 缩短至约 1.5 h。
引用
@article{arxiv.2309.16877,
title = {Achieving ultra-low and -uniform residual magnetic fields in a very large magnetically shielded room for fundamental physics experiments},
author = {N. J. Ayres and G. Ban and G. Bison and K. Bodek and V. Bondar and T. Bouillaud and D. Bowles and E. Chanel and W. Chen and P. -J. Chiu and C. B. Crawford and O. Naviliat-Cuncic and C. B. Doorenbos and S. Emmenegger and M. Fertl and A. Fratangelo and W. C. Griffith and Z. D. Grujic and P. G. Harris and K. Kirch and V. Kletzl and J. Krempel and B. Lauss and T. Lefort and A. Lejuez and R. Li and P. Mullan and S. Pacura and D. Pais and F. M. Piegsa and I. Rienäcker and D. Ries and G. Pignol and D. Rebreyend and S. Roccia and D. Rozpedzik and W. Saenz-Arevalo and P. Schmidt-Wellenburg and A. Schnabel and E. P. Segarra and N. Severijns and K. Svirina and R. Tavakoli Dinani and J. Thorne and J. Vankeirsbilck and J. Voigt and N. Yazdandoost and J. Zejma and N. Ziehl and G. Zsigmond},
journal= {arXiv preprint arXiv:2309.16877},
year = {2023}
}