n2EDM实验主动磁屏蔽的仿真与优化
仪器与探测器
2026-04-27 v1 核实验
摘要
位于保罗·谢尔研究所的n2EDM实验旨在对中子电偶极矩进行高灵敏度搜索。磁稳定性与控制通过磁屏蔽室(MSR)提供的被动屏蔽与主动磁屏蔽(AMS)的周围主动场补偿系统相结合来实现。AMS是一个由分布在非规则网格上的八个线圈组成的反馈控制系统，旨在通过主动抑制外部磁场扰动来为封闭体积提供磁稳定性。它可以补偿高达 T（均匀分量）和 T/m（一阶梯度）的静态和可变磁场，在亚赫兹频率范围内将其抑制到几个T。我们提出了在MSR存在的情况下，AMS产生的磁场的完整有限元仿真。该仿真具有足够的精度以接近我们的测量结果。我们通过一个示例演示了如何使用该仿真，利用遗传算法获得了反馈传感器的最佳数量和位置。
引用
@article{arxiv.2601.22960,
title = {Simulation and optimization of the Active Magnetic Shield of the n2EDM experiment},
author = {N. J. Ayres and G. Ban and G. Bison and K. Bodek and V. Bondar and T. Bouillaud and G. L. Caratsch and E. Chanel and W. Chen and C. Crawford and V. Czamler and C. B. Doorenbos and S. Emmeneger and S. K. Ermakov and M. Ferry and M. Fertl and A. Fratangelo and D. Galbinski and W. C. Griffith and Z. D. Grujic and K. Kirch and V. Kletzl and J. Krempel and B. Lauss and T. Lefort and A. Lejuez and K. Michielsen and J. Micko and P. Mullan and O. Naviliat-Cuncic and F. M. Piegsa and G. Pignol and C. Pistillo and I. Rienäcker and D. Ries and S. Roccia and D. Rozpędzik and L. Sanchez-Real Zielniewicz and N. von Schickh and P. Schmidt-Wellenburg and E. P. Segarra and L. Segner and N. Severijns and K. Svirina and J. Thorne and J. Vankeirsbilck and N. Yazdandoost and J. Zejma and N. Ziehl and G. Zsigmond},
journal= {arXiv preprint arXiv:2601.22960},
year = {2026}
}