Development of a High-Performance Permanent Magnet System for Ion Trapping Experiments
Atomic Physics
2026-07-03 v1
Abstract
This work presents the design and fabrication of a compact permanent magnet based on an optimized stacked structure of fifteen NdFeB rings. The tunable NS-SN-NS configuration generates a central magnetic field of 0.8T with a reconstructed uniformity of 99.988% within a 1mm radius spherical volume. The remaining field inhomogeneity is dominated by radial dipole components. Requiring neither cryogenics nor external power, this design provides a high-performance and cost-effective alternative to superconducting magnets for applications in ion-trap development and Fourier-transform ion cyclotron resonance mass spectrometry.
Cite
@article{arxiv.2607.03255,
title = {Development of a High-Performance Permanent Magnet System for Ion Trapping Experiments},
author = {Jifei Wu and Jiawei Wang and Tianhang Zhang and Zichen Su and Liangyu Huang and Wei Wu and Bingsheng Tu},
journal= {arXiv preprint arXiv:2607.03255},
year = {2026}
}