Generating a highly uniform magnetic field inside the magnetically shielded room of the n2EDM experiment

IF 4.2 2区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS

The European Physical Journal C Pub Date : 2025-02-20 DOI:10.1140/epjc/s10052-025-13902-x

C. Abel, N. J. Ayres, G. Ban, G. Bison, K. Bodek, V. Bondar, T. Bouillaud, D. C. Bowles, G. L. Caratsch, E. Chanel, W. Chen, P.-J. Chiu, C. Crawford, B. Dechenaux, C. B. Doorenbos, S. Emmenegger, L. Ferraris-Bouchez, M. Fertl, P. Flaux, A. Fratangelo, D. Goupillière, W. C. Griffith, Z. Grujic, D. Höhl, M. Kasprzak, K. Kirch, V. Kletzl, S. V. Komposch, P. A. Koss, J. Krempel, B. Lauss, T. Lefort, A. Lejuez, R. Li, M. Meier, J. Menu, K. Michielsen, P. Mullan, A. Mullins, O. Naviliat-Cuncic, D. Pais, F. M. Piegsa, G. Pignol, G. Quemener, M. Rawlik, D. Rebreyend, I. Rienaecker, D. Ries, S. Roccia, D. Rozpedzik, A. Schnabel, P. Schmidt-Wellenburg, E. P. Segarra, N. Severijns, C. A. Smith, K. Svirina, R. Tavakoli, J. Thorne, S. Touati, J. Vankeirsbilck, R. Virot, J. Voigt, E. Wursten, N. Yazdandoost, J. Zejma, N. Ziehl, G. Zsigmond

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Abstract

We present a coil system designed to generate a highly uniform magnetic field for the n2EDM experiment at the Paul Scherrer Institute. It consists of a main \(B_0\) coil and a set of auxiliary coils mounted on a cubic structure with a side length of \(273~\hbox {cm}\), inside a large magnetically shielded room (MSR). We have assembled this system and characterized its performances with a mapping robot. The apparatus is able to generate a \(1~\upmu \hbox {T}\) vertical field with a relative root mean square deviation \(\sigma (B_z)/B_z = 3\times 10^{-5}\) over the volume of interest, a cylinder of radius \(40~\hbox {cm}\) and height \({30}~\hbox {cm}\). This level of uniformity overcomes the n2EDM requirements, allowing a measurement of the neutron Electric Dipole Moment with a sensitivity better than \(1\times 10^{-27}e\,\hbox {cm}\).

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来源期刊

The European Physical Journal C 物理-物理：粒子与场物理

CiteScore

8.10

自引率

15.90%

发文量

1008

审稿时长

2-4 weeks

期刊介绍： Experimental Physics I: Accelerator Based High-Energy Physics Hadron and lepton collider physics Lepton-nucleon scattering High-energy nuclear reactions Standard model precision tests Search for new physics beyond the standard model Heavy flavour physics Neutrino properties Particle detector developments Computational methods and analysis tools Experimental Physics II: Astroparticle Physics Dark matter searches High-energy cosmic rays Double beta decay Long baseline neutrino experiments Neutrino astronomy Axions and other weakly interacting light particles Gravitational waves and observational cosmology Particle detector developments Computational methods and analysis tools Theoretical Physics I: Phenomenology of the Standard Model and Beyond Electroweak interactions Quantum chromo dynamics Heavy quark physics and quark flavour mixing Neutrino physics Phenomenology of astro- and cosmoparticle physics Meson spectroscopy and non-perturbative QCD Low-energy effective field theories Lattice field theory High temperature QCD and heavy ion physics Phenomenology of supersymmetric extensions of the SM Phenomenology of non-supersymmetric extensions of the SM Model building and alternative models of electroweak symmetry breaking Flavour physics beyond the SM Computational algorithms and tools...etc.