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

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

doi:10.1140/epjc/s10052-025-13902-x

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

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

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

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 B0 coil and a set of auxiliary coils mounted on a cubic structure with a side length of 273cm, 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 1μT vertical field with a relative root mean square deviation σ(Bz)/Bz=3×10-5 over the volume of interest, a cylinder of radius 40cm and height 30cm. This level of uniformity overcomes the n2EDM requirements, allowing a measurement of the neutron Electric Dipole Moment with a sensitivity better than 1×10-27ecm.

Original language	English
Article number	202
Journal	European Physical Journal C
Volume	85
Issue number	2
DOIs	https://doi.org/10.1140/epjc/s10052-025-13902-x
State	Published - Feb 2025

Bibliographical note

Publisher Copyright:
© The Author(s) 2025.

Funding

− The Institute of Physics Belgrade through a grant by the Ministry of Education, Science and Technological Development of the Republic of Serbia. − The European Union under the ERC grant 716651-NEDM, the ERC grant 715031-Beam-EDM, and the Marie Skłodowska-Curie grant agreement No 884104. − The German Research Foundation (DFG) by the funding of the PTB core facility center of ultra-low magnetic field KO 5321/3-1 and TR 408/11-1; and by the Cluster of Excellence ‘Precision Physics, Fundamental Interactions, and Structure of Matter’ (PRISMA+ EXC 2118/1) funded within the German Excellence Strategy (Project ID 39083149) − The Polish National Science Center under grants 2015/18/M/ST2/000 56, 2018/30/M/ST2/ 00319; and the Polish Minister of Education and Science under the agreement No. 2022/WK/07. − The French Agence Nationale de la Recherche (ANR) under grant ANR-14-CE33-0007. − The Swiss National Science Foundation grants 200020-188700, 200020-163413, 200011-178951, 200021-204118, 200021-172626, 206021-213222, 169596 (PSI); 200020-215185, 200021-181996 (Bern); 200441 (ETH); and FLARE grants 20FL21-186179, 20FL20-201473, 20FL20-216603.

Funders	Funder number
Institute of Physics Belgrade
European Commission
Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja
Deutsche Forschungsgemeinschaft	39083149, TR 408/11-1, EXC 2118/1
Polish Minister of Education and Science	2022/WK/07
H2020 European Research Council	715031-Beam-EDM, 716651-NEDM
Narodowe Centrum Nauki	2018/30/M/ST2/ 00319, 2015/18/M/ST2/000 56
French Agence Nationale de la Recherche	ANR-14-CE33-0007
H2020 Marie Skłodowska-Curie Actions	884104
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung	206021-213222, 20FL20-216603, 200011-178951, 200021-172626, 169596, 200020-215185, 200020-163413, 20FL20-201473, 200441, 20FL21-186179, 200021-204118, 200021-181996, 200020-188700

ASJC Scopus subject areas

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

Access to Document

10.1140/epjc/s10052-025-13902-x

Cite this

Abel, C., Ayres, N. J., Ban, G., Bison, G., Bodek, K., Bondar, V., Bouillaud, T., Bowles, D. C., Caratsch, G. L., Chanel, E., Chen, W., Chiu, P. J., Crawford, C., Dechenaux, B., Doorenbos, C. B., Emmenegger, S., Ferraris-Bouchez, L., Fertl, M., Flaux, P., ... Zsigmond, G. (2025). Generating a highly uniform magnetic field inside the magnetically shielded room of the n2EDM experiment. European Physical Journal C, 85(2), Article 202. https://doi.org/10.1140/epjc/s10052-025-13902-x

@article{044edede42364013ac02c6662048429a,

title = "Generating a highly uniform magnetic field inside the magnetically shielded room of the n2EDM experiment",

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 B0 coil and a set of auxiliary coils mounted on a cubic structure with a side length of 273cm, 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 1μT vertical field with a relative root mean square deviation σ(Bz)/Bz=3×10-5 over the volume of interest, a cylinder of radius 40cm and height 30cm. This level of uniformity overcomes the n2EDM requirements, allowing a measurement of the neutron Electric Dipole Moment with a sensitivity better than 1×10-27ecm.",

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

note = "Publisher Copyright: {\textcopyright} The Author(s) 2025.",

year = "2025",

month = feb,

doi = "10.1140/epjc/s10052-025-13902-x",

language = "English",

volume = "85",

number = "2",

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Abel, C, Ayres, NJ, Ban, G, Bison, G, Bodek, K, Bondar, V, Bouillaud, T, Bowles, DC, Caratsch, GL, Chanel, E, Chen, W, Chiu, PJ, Crawford, C, Dechenaux, B, Doorenbos, CB, Emmenegger, S, Ferraris-Bouchez, L, Fertl, M, Flaux, P, Fratangelo, A, Goupillière, D, Griffith, WC, Grujic, Z, Höhl, D, Kasprzak, M, Kirch, K, Kletzl, V, Komposch, SV, Koss, PA, Krempel, J, Lauss, B, Lefort, T, Lejuez, A, Li, R, Meier, M, Menu, J, Michielsen, K, Mullan, P, Mullins, A, Naviliat-Cuncic, O, Pais, D, Piegsa, FM, Pignol, G, Quemener, G, Rawlik, M, Rebreyend, D, Rienaecker, I, Ries, D, Roccia, S, Rozpedzik, D, Schnabel, A, Schmidt-Wellenburg, P, Segarra, EP, Severijns, N, Smith, CA, Svirina, K, Tavakoli, R, Thorne, J, Touati, S, Vankeirsbilck, J, Virot, R, Voigt, J, Wursten, E, Yazdandoost, N, Zejma, J, Ziehl, N & Zsigmond, G 2025, 'Generating a highly uniform magnetic field inside the magnetically shielded room of the n2EDM experiment', European Physical Journal C, vol. 85, no. 2, 202. https://doi.org/10.1140/epjc/s10052-025-13902-x

TY - JOUR

T1 - Generating a highly uniform magnetic field inside the magnetically shielded room of the n2EDM experiment

AU - Abel, C.

AU - Ayres, N. J.

AU - Ban, G.

AU - Bison, G.

AU - Bodek, K.

AU - Bondar, V.

AU - Bouillaud, T.

AU - Bowles, D. C.

AU - Caratsch, G. L.

AU - Chanel, E.

AU - Chen, W.

AU - Chiu, P. J.

AU - Crawford, C.

AU - Dechenaux, B.

AU - Doorenbos, C. B.

AU - Emmenegger, S.

AU - Ferraris-Bouchez, L.

AU - Fertl, M.

AU - Flaux, P.

AU - Fratangelo, A.

AU - Goupillière, D.

AU - Griffith, W. C.

AU - Grujic, Z.

AU - Höhl, D.

AU - Kasprzak, M.

AU - Kirch, K.

AU - Kletzl, V.

AU - Komposch, S. V.

AU - Koss, P. A.

AU - Krempel, J.

AU - Lauss, B.

AU - Lefort, T.

AU - Lejuez, A.

AU - Li, R.

AU - Meier, M.

AU - Menu, J.

AU - Michielsen, K.

AU - Mullan, P.

AU - Mullins, A.

AU - Naviliat-Cuncic, O.

AU - Pais, D.

AU - Piegsa, F. M.

AU - Pignol, G.

AU - Quemener, G.

AU - Rawlik, M.

AU - Rebreyend, D.

AU - Rienaecker, I.

AU - Ries, D.

AU - Roccia, S.

AU - Rozpedzik, D.

AU - Schnabel, A.

AU - Schmidt-Wellenburg, P.

AU - Segarra, E. P.

AU - Severijns, N.

AU - Smith, C. A.

AU - Svirina, K.

AU - Tavakoli, R.

AU - Thorne, J.

AU - Touati, S.

AU - Vankeirsbilck, J.

AU - Virot, R.

AU - Voigt, J.

AU - Wursten, E.

AU - Yazdandoost, N.

AU - Zejma, J.

AU - Ziehl, N.

AU - Zsigmond, G.

PY - 2025/2

Y1 - 2025/2

N2 - 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 B0 coil and a set of auxiliary coils mounted on a cubic structure with a side length of 273cm, 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 1μT vertical field with a relative root mean square deviation σ(Bz)/Bz=3×10-5 over the volume of interest, a cylinder of radius 40cm and height 30cm. This level of uniformity overcomes the n2EDM requirements, allowing a measurement of the neutron Electric Dipole Moment with a sensitivity better than 1×10-27ecm.

AB - 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 B0 coil and a set of auxiliary coils mounted on a cubic structure with a side length of 273cm, 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 1μT vertical field with a relative root mean square deviation σ(Bz)/Bz=3×10-5 over the volume of interest, a cylinder of radius 40cm and height 30cm. This level of uniformity overcomes the n2EDM requirements, allowing a measurement of the neutron Electric Dipole Moment with a sensitivity better than 1×10-27ecm.

UR - https://www.scopus.com/pages/publications/86000033195

UR - https://www.scopus.com/pages/publications/86000033195#tab=citedBy

U2 - 10.1140/epjc/s10052-025-13902-x

DO - 10.1140/epjc/s10052-025-13902-x

M3 - Article

AN - SCOPUS:86000033195

SN - 1434-6044

VL - 85

JO - European Physical Journal C

JF - European Physical Journal C

IS - 2

M1 - 202

ER -

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

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