Achieving ultra-low and -uniform residual magnetic fields in a very large magnetically shielded room for fundamental physics experiments

N. J. Ayres; G. Ban; G. Bison; K. Bodek; V. Bondar; T. Bouillaud; D. Bowles; E. Chanel; W. Chen; P. J. Chiu; C. B. Crawford; O. Naviliat-Cuncic; C. B. Doorenbos; S. Emmenegger; M. Fertl; A. Fratangelo; W. C. Griffith; Z. D. Grujic; P. G. Harris; K. Kirch; V. Kletzl; J. Krempel; B. Lauss; T. Lefort; A. Lejuez; R. Li; P. Mullan; S. Pacura; D. Pais; F. M. Piegsa; I. Rienäcker; D. Ries; G. Pignol; D. Rebreyend; S. Roccia; D. Rozpedzik; W. Saenz-Arevalo; P. Schmidt-Wellenburg; A. Schnabel; E. P. Segarra; N. Severijns; K. Svirina; R. Tavakoli Dinani; J. Thorne; J. Vankeirsbilck; J. Voigt; N. Yazdandoost; J. Zejma; N. Ziehl; G. Zsigmond

doi:10.1140/epjc/s10052-023-12351-8

Achieving ultra-low and -uniform residual magnetic fields in a very large magnetically shielded room for fundamental physics experiments

N. J. Ayres, G. Ban, G. Bison, K. Bodek, V. Bondar, T. Bouillaud, D. Bowles, E. Chanel, W. Chen, P. J. Chiu, C. B. Crawford, O. Naviliat-Cuncic, C. B. Doorenbos, S. Emmenegger, M. Fertl, A. Fratangelo, W. C. Griffith, Z. D. Grujic, P. G. Harris, K. KirchV. Kletzl, J. Krempel, B. Lauss, T. Lefort, A. Lejuez, R. Li, P. Mullan, S. Pacura, D. Pais, F. M. Piegsa, I. Rienäcker, D. Ries, G. Pignol, D. Rebreyend, S. Roccia, D. Rozpedzik, W. Saenz-Arevalo, P. Schmidt-Wellenburg, A. Schnabel, E. P. Segarra, N. Severijns, K. Svirina, R. Tavakoli Dinani, J. Thorne, J. Vankeirsbilck, J. Voigt, N. Yazdandoost, J. Zejma, N. Ziehl, G. Zsigmond

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

7 Scopus citations

Abstract

High-precision searches for an electric dipole moment of the neutron (nEDM) require stable and uniform magnetic field environments. We present the recent achievements of degaussing and equilibrating the magnetically shielded room (MSR) for the n2EDM experiment at the Paul Scherrer Institute. We present the final degaussing configuration that will be used for n2EDM after numerous studies. The optimized procedure results in a residual magnetic field that has been reduced by a factor of two. The ultra-low field is achieved with the full magnetic-field-coil system, and a large vacuum vessel installed, both in the MSR. In the inner volume of ∼1.4m3 , the field is now more uniform and below 300 pT. In addition, the procedure is faster and dissipates less heat into the magnetic environment, which in turn, reduces its thermal relaxation time from 12h down to 1.5h .

Original language	English
Article number	18
Journal	European Physical Journal C
Volume	84
Issue number	1
DOIs	https://doi.org/10.1140/epjc/s10052-023-12351-8
State	Published - Jan 2024

Bibliographical note

Publisher Copyright:
© 2024, The Author(s).

Funding

Excellent technical support by Michael Meier and Luke Noorda is acknowledged. We also especially acknowledge the excellent construction work of the group for magnetically shielded rooms of the company VAC - Vacuumschmelze, Hanau; namely of Lela Bauer, Markus Hein, Maximilian Staab, and Michael Wüst. Various PSI LOG groups supported the electrical components construction. The magnetic field mapper has been designed and installed by the LPSC mechanical department; namely Johann Menu. Support by the Swiss National Science Foundation Projects 200020-188700 (PSI), 200020-163413 (PSI), 200011-178951 (PSI), 200021-204118 (PSI), 200021-172626 (PSI), 206021-213222 (PSI), 169596 (PSI), 200021-181996 (Bern), 200441 (ETH), and FLARE 20FL21-186179, and 20FL20-201473 is gratefully acknowledged. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 884104. This work is support by the DFG (DE) by the funding of the PTB core facility center of ultra-low magnetic field KO 5321/3-1 and TR 408/11-1. The LPC Caen and the LPSC Grenoble acknowledge the support of the French Agence Nationale de la Recherche (ANR) under reference ANR-14-CE33-0007 and the ERC project 716651-NEDM. University of Bern acknowledges the support via the European Research Council under the ERC Grant Agreement No. 715031-Beam-EDM. The Polish collaborators wish to acknowledge support from the National Science Center, Poland, under grant No. 2018/30/M/ST2/00319, and No. 2020/37/B/ST2/02349, as well as by the Minister of Education and Science under the agreement No. 2022/WK/07. Support by the Cluster of Excellence ‘Precision Physics, Fundamental Interactions, and Structure of Matter’ (PRISMA+ EXC 2118/1) funded by the German Research Foundation (DFG) within the German Excellence Strategy (Project ID 39083149) is acknowledged. Collaborators at the University of Sussex wish to acknowledge support from the School of Mathematical and Physical Sciences, as well as from the STFC under grant ST/S000798/1. This work was partly supported by the Fund for Scientific Research Flanders (FWO), and Project GOA/2010/10 of the KU Leuven. Researchers from the University of Belgrade acknowledge institutional funding provided by the Institute of Physics Belgrade through a grant by the Ministry of Education, Science and Technological Development of the Republic of Serbia.

Funders	Funder number
Institute of Physics Belgrade
Associação Viver a Ciência
KU Leuven
ANR-14-CE33-0007
University of Belgrade
Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja
School of Mathematical and Physical Sciences
UK Industrial Decarbonization Research and Innovation Centre
Narodowym Centrum Nauki	2018/30/M/ST2/00319, 2020/37/B/ST2/02349
Deutsche Forschungsgemeinschaft	39083149, TR 408/11-1, KO 5321/3-1
H2020 Marie Skłodowska-Curie Actions	884104
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung	172626, 200011, 200020-188700
French Agence Nationale de la Recherche	ANR-14-CE33-0007
Spanish Science and Education Ministry	EXC 2118/1, 2022/WK/07
Horizon 2020 Framework Programme	715031
Fonds Wetenschappelijk Onderzoek	GOA/2010/10
Paul Scherrer Institut	200020-163413, 206021-213222, 20FL20-201473, 200441, 200011-178951, 200021-172626, 200021-204118, FLARE 20FL21-186179, 200021-181996, 169596
H2020 European Research Council	716651-NEDM
Science and Technology Facilities Council	ST/S000798/1

ASJC Scopus subject areas

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

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10.1140/epjc/s10052-023-12351-8

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Ayres, N. J., Ban, G., Bison, G., Bodek, K., Bondar, V., Bouillaud, T., Bowles, D., Chanel, E., Chen, W., Chiu, P. J., Crawford, C. B., Naviliat-Cuncic, O., Doorenbos, C. B., Emmenegger, S., Fertl, M., Fratangelo, A., Griffith, W. C., Grujic, Z. D., Harris, P. G., ... Zsigmond, G. (2024). Achieving ultra-low and -uniform residual magnetic fields in a very large magnetically shielded room for fundamental physics experiments. European Physical Journal C, 84(1), Article 18. https://doi.org/10.1140/epjc/s10052-023-12351-8

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title = "Achieving ultra-low and -uniform residual magnetic fields in a very large magnetically shielded room for fundamental physics experiments",

abstract = "High-precision searches for an electric dipole moment of the neutron (nEDM) require stable and uniform magnetic field environments. We present the recent achievements of degaussing and equilibrating the magnetically shielded room (MSR) for the n2EDM experiment at the Paul Scherrer Institute. We present the final degaussing configuration that will be used for n2EDM after numerous studies. The optimized procedure results in a residual magnetic field that has been reduced by a factor of two. The ultra-low field is achieved with the full magnetic-field-coil system, and a large vacuum vessel installed, both in the MSR. In the inner volume of ∼1.4m3 , the field is now more uniform and below 300 pT. In addition, the procedure is faster and dissipates less heat into the magnetic environment, which in turn, reduces its thermal relaxation time from 12h down to 1.5h .",

author = "Ayres, \{N. J.\} 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 Chiu, \{P. J.\} and Crawford, \{C. B.\} and O. Naviliat-Cuncic and Doorenbos, \{C. B.\} and S. Emmenegger and M. Fertl and A. Fratangelo and Griffith, \{W. C.\} and Grujic, \{Z. D.\} and Harris, \{P. G.\} 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 Piegsa, \{F. M.\} and I. Rien{\"a}cker 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 Segarra, \{E. P.\} and N. Severijns and K. Svirina and \{Tavakoli Dinani\}, R. and J. Thorne and J. Vankeirsbilck and J. Voigt and N. Yazdandoost and J. Zejma and N. Ziehl and G. Zsigmond",

note = "Publisher Copyright: {\textcopyright} 2024, The Author(s).",

year = "2024",

month = jan,

doi = "10.1140/epjc/s10052-023-12351-8",

language = "English",

volume = "84",

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Ayres, NJ, Ban, G, Bison, G, Bodek, K, Bondar, V, Bouillaud, T, Bowles, D, Chanel, E, Chen, W, Chiu, PJ, Crawford, CB, Naviliat-Cuncic, O, Doorenbos, CB, Emmenegger, S, Fertl, M, Fratangelo, A, Griffith, WC, Grujic, ZD, Harris, PG, Kirch, K, Kletzl, V, Krempel, J, Lauss, B, Lefort, T, Lejuez, A, Li, R, Mullan, P, Pacura, S, Pais, D, Piegsa, FM, Rienäcker, I, Ries, D, Pignol, G, Rebreyend, D, Roccia, S, Rozpedzik, D, Saenz-Arevalo, W, Schmidt-Wellenburg, P, Schnabel, A, Segarra, EP, Severijns, N, Svirina, K, Tavakoli Dinani, R, Thorne, J, Vankeirsbilck, J, Voigt, J, Yazdandoost, N, Zejma, J, Ziehl, N & Zsigmond, G 2024, 'Achieving ultra-low and -uniform residual magnetic fields in a very large magnetically shielded room for fundamental physics experiments', European Physical Journal C, vol. 84, no. 1, 18. https://doi.org/10.1140/epjc/s10052-023-12351-8

TY - JOUR

T1 - Achieving ultra-low and -uniform residual magnetic fields in a very large magnetically shielded room for fundamental physics experiments

AU - Ayres, N. J.

AU - Ban, G.

AU - Bison, G.

AU - Bodek, K.

AU - Bondar, V.

AU - Bouillaud, T.

AU - Bowles, D.

AU - Chanel, E.

AU - Chen, W.

AU - Chiu, P. J.

AU - Crawford, C. B.

AU - Naviliat-Cuncic, O.

AU - Doorenbos, C. B.

AU - Emmenegger, S.

AU - Fertl, M.

AU - Fratangelo, A.

AU - Griffith, W. C.

AU - Grujic, Z. D.

AU - Harris, P. G.

AU - Kirch, K.

AU - Kletzl, V.

AU - Krempel, J.

AU - Lauss, B.

AU - Lefort, T.

AU - Lejuez, A.

AU - Li, R.

AU - Mullan, P.

AU - Pacura, S.

AU - Pais, D.

AU - Piegsa, F. M.

AU - Rienäcker, I.

AU - Ries, D.

AU - Pignol, G.

AU - Rebreyend, D.

AU - Roccia, S.

AU - Rozpedzik, D.

AU - Saenz-Arevalo, W.

AU - Schmidt-Wellenburg, P.

AU - Schnabel, A.

AU - Segarra, E. P.

AU - Severijns, N.

AU - Svirina, K.

AU - Tavakoli Dinani, R.

AU - Thorne, J.

AU - Vankeirsbilck, J.

AU - Voigt, J.

AU - Yazdandoost, N.

AU - Zejma, J.

AU - Ziehl, N.

AU - Zsigmond, G.

PY - 2024/1

Y1 - 2024/1

N2 - High-precision searches for an electric dipole moment of the neutron (nEDM) require stable and uniform magnetic field environments. We present the recent achievements of degaussing and equilibrating the magnetically shielded room (MSR) for the n2EDM experiment at the Paul Scherrer Institute. We present the final degaussing configuration that will be used for n2EDM after numerous studies. The optimized procedure results in a residual magnetic field that has been reduced by a factor of two. The ultra-low field is achieved with the full magnetic-field-coil system, and a large vacuum vessel installed, both in the MSR. In the inner volume of ∼1.4m3 , the field is now more uniform and below 300 pT. In addition, the procedure is faster and dissipates less heat into the magnetic environment, which in turn, reduces its thermal relaxation time from 12h down to 1.5h .

AB - High-precision searches for an electric dipole moment of the neutron (nEDM) require stable and uniform magnetic field environments. We present the recent achievements of degaussing and equilibrating the magnetically shielded room (MSR) for the n2EDM experiment at the Paul Scherrer Institute. We present the final degaussing configuration that will be used for n2EDM after numerous studies. The optimized procedure results in a residual magnetic field that has been reduced by a factor of two. The ultra-low field is achieved with the full magnetic-field-coil system, and a large vacuum vessel installed, both in the MSR. In the inner volume of ∼1.4m3 , the field is now more uniform and below 300 pT. In addition, the procedure is faster and dissipates less heat into the magnetic environment, which in turn, reduces its thermal relaxation time from 12h down to 1.5h .

UR - https://www.scopus.com/pages/publications/85181712709

UR - https://www.scopus.com/inward/citedby.url?scp=85181712709&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-023-12351-8

DO - 10.1140/epjc/s10052-023-12351-8

M3 - Article

AN - SCOPUS:85181712709

SN - 1434-6044

VL - 84

JO - European Physical Journal C

JF - European Physical Journal C

IS - 1

M1 - 18

ER -

Achieving ultra-low and -uniform residual magnetic fields in a very large magnetically shielded room for fundamental physics experiments

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