Magnetic-field uniformity in neutron electric-dipole-moment experiments

C. Abel; N. J. Ayres; T. Baker; G. Ban; G. Bison; K. Bodek; V. Bondar; C. B. Crawford; P. J. Chiu; E. Chanel; Z. Chowdhuri; M. Daum; B. Dechenaux; S. Emmenegger; L. Ferraris-Bouchez; P. Flaux; P. Geltenbort; K. Green; W. C. Griffith; M. Van Der Grinten; P. G. Harris; R. Henneck; N. Hild; P. Iaydjiev; S. N. Ivanov; M. Kasprzak; Y. Kermaidic; K. Kirch; H. C. Koch; S. Komposch; P. A. Koss; A. Kozela; J. Krempel; B. Lauss; T. Lefort; Y. Lemiere; A. Leredde; P. Mohanmurthy; D. Pais; F. M. Piegsa; G. Pignol; G. Quéméner; M. Rawlik; D. Rebreyend; D. Ries; S. Roccia; D. Rozpedzik; P. Schmidt-Wellenburg; A. Schnabel; N. Severijns; R. Virot; A. Weis; E. Wursten; G. Wyszynski; J. Zejma; G. Zsigmond

doi:10.1103/PhysRevA.99.042112

Magnetic-field uniformity in neutron electric-dipole-moment experiments

C. Abel, N. J. Ayres, T. Baker, G. Ban, G. Bison, K. Bodek, V. Bondar, C. B. Crawford, P. J. Chiu, E. Chanel, Z. Chowdhuri, M. Daum, B. Dechenaux, S. Emmenegger, L. Ferraris-Bouchez, P. Flaux, P. Geltenbort, K. Green, W. C. Griffith, M. Van Der GrintenP. G. Harris, R. Henneck, N. Hild, P. Iaydjiev, S. N. Ivanov, M. Kasprzak, Y. Kermaidic, K. Kirch, H. C. Koch, S. Komposch, P. A. Koss, A. Kozela, J. Krempel, B. Lauss, T. Lefort, Y. Lemiere, A. Leredde, P. Mohanmurthy, D. Pais, F. M. Piegsa, G. Pignol, G. Quéméner, M. Rawlik, D. Rebreyend, D. Ries, S. Roccia, D. Rozpedzik, P. Schmidt-Wellenburg, A. Schnabel, N. Severijns, R. Virot, A. Weis, E. Wursten, G. Wyszynski, J. Zejma, G. Zsigmond

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

16 Scopus citations

Abstract

Magnetic-field uniformity is of the utmost importance in experiments to measure the electric dipole moment of the neutron. A general parametrization of the magnetic field in terms of harmonic polynomial modes is proposed, going beyond the linear-gradients approximation. We review the main undesirable effects of nonuniformities: depolarization of ultracold neutrons and Larmor frequency shifts of neutrons and mercury atoms. The theoretical predictions for these effects were verified by dedicated measurements with the single-chamber neutron electric-dipole-moment apparatus installed at the Paul Scherrer Institute.

Original language	English
Article number	042112
Journal	Physical Review A
Volume	99
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevA.99.042112
State	Published - Apr 15 2019

Bibliographical note

Funding Information:
The experimental data were taken at PSI Villigen. We acknowledge the excellent support provided by the PSI technical groups and by various services of the collaborating universities and research laboratories. We gratefully acknowledge financial support from the Swiss National Science Foundation through Projects No. 200020-137664 (PSI), No. 200021-117696 (PSI), No. 200020-144473 (PSI), No. 200021-126562 (PSI), No. 200021-181996 (Bern), No. 200020-172639 (ETH), and No. 200020-140421 (Fri-bourg) and from STFC via Grants No. ST/M003426/1, No. ST/N504452/1, and No. ST/N000307/1. The LPC Caen and the LPSC Grenoble acknowledge the support of the French Agence Nationale de la Recherche (ANR) under Reference No. ANR-09-BLAN-0046 and the ERC Project No. 716651-NEDM. The Polish collaborators wish to acknowledge support from the National Science Center, Poland, under Grant No. 2015/18/M/ST2/00056. P.M. acknowledges Grant No. SERI-FCS 2015.0594. This work was also partly supported by the Fund for Scientific Research Flanders (FWO), and Project GOA/2010/10 of the KU Leuven. In addition we are grateful for access granted to the computing grid PL-Grid infrastructure. The German collaborators wish to acknowledge support from the DFG (DE) Priority Program SPP 1491.

Publisher Copyright:
© 2019 American Physical Society.

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1103/PhysRevA.99.042112

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Abel, C., Ayres, N. J., Baker, T., Ban, G., Bison, G., Bodek, K., Bondar, V., Crawford, C. B., Chiu, P. J., Chanel, E., Chowdhuri, Z., Daum, M., Dechenaux, B., Emmenegger, S., Ferraris-Bouchez, L., Flaux, P., Geltenbort, P., Green, K., Griffith, W. C., ... Zsigmond, G. (2019). Magnetic-field uniformity in neutron electric-dipole-moment experiments. Physical Review A, 99(4), Article 042112. https://doi.org/10.1103/PhysRevA.99.042112

@article{192d2e866ae44d5d860e7f69d2617a48,

title = "Magnetic-field uniformity in neutron electric-dipole-moment experiments",

abstract = "Magnetic-field uniformity is of the utmost importance in experiments to measure the electric dipole moment of the neutron. A general parametrization of the magnetic field in terms of harmonic polynomial modes is proposed, going beyond the linear-gradients approximation. We review the main undesirable effects of nonuniformities: depolarization of ultracold neutrons and Larmor frequency shifts of neutrons and mercury atoms. The theoretical predictions for these effects were verified by dedicated measurements with the single-chamber neutron electric-dipole-moment apparatus installed at the Paul Scherrer Institute.",

author = "C. Abel and Ayres, {N. J.} and T. Baker and G. Ban and G. Bison and K. Bodek and V. Bondar and Crawford, {C. B.} and Chiu, {P. J.} and E. Chanel and Z. Chowdhuri and M. Daum and B. Dechenaux and S. Emmenegger and L. Ferraris-Bouchez and P. Flaux and P. Geltenbort and K. Green and Griffith, {W. C.} and {Van Der Grinten}, M. and Harris, {P. G.} and R. Henneck and N. Hild and P. Iaydjiev and Ivanov, {S. N.} and M. Kasprzak and Y. Kermaidic and K. Kirch and Koch, {H. C.} and S. Komposch and Koss, {P. A.} and A. Kozela and J. Krempel and B. Lauss and T. Lefort and Y. Lemiere and A. Leredde and P. Mohanmurthy and D. Pais and Piegsa, {F. M.} and G. Pignol and G. Qu{\'e}m{\'e}ner and M. Rawlik and D. Rebreyend and D. Ries and S. Roccia and D. Rozpedzik and P. Schmidt-Wellenburg and A. Schnabel and N. Severijns and R. Virot and A. Weis and E. Wursten and G. Wyszynski and J. Zejma and G. Zsigmond",

note = "Funding Information: The experimental data were taken at PSI Villigen. We acknowledge the excellent support provided by the PSI technical groups and by various services of the collaborating universities and research laboratories. We gratefully acknowledge financial support from the Swiss National Science Foundation through Projects No. 200020-137664 (PSI), No. 200021-117696 (PSI), No. 200020-144473 (PSI), No. 200021-126562 (PSI), No. 200021-181996 (Bern), No. 200020-172639 (ETH), and No. 200020-140421 (Fri-bourg) and from STFC via Grants No. ST/M003426/1, No. ST/N504452/1, and No. ST/N000307/1. The LPC Caen and the LPSC Grenoble acknowledge the support of the French Agence Nationale de la Recherche (ANR) under Reference No. ANR-09-BLAN-0046 and the ERC Project No. 716651-NEDM. The Polish collaborators wish to acknowledge support from the National Science Center, Poland, under Grant No. 2015/18/M/ST2/00056. P.M. acknowledges Grant No. SERI-FCS 2015.0594. This work was also partly supported by the Fund for Scientific Research Flanders (FWO), and Project GOA/2010/10 of the KU Leuven. In addition we are grateful for access granted to the computing grid PL-Grid infrastructure. The German collaborators wish to acknowledge support from the DFG (DE) Priority Program SPP 1491. Publisher Copyright: {\textcopyright} 2019 American Physical Society.",

year = "2019",

month = apr,

day = "15",

doi = "10.1103/PhysRevA.99.042112",

language = "English",

volume = "99",

number = "4",

}

Abel, C, Ayres, NJ, Baker, T, Ban, G, Bison, G, Bodek, K, Bondar, V, Crawford, CB, Chiu, PJ, Chanel, E, Chowdhuri, Z, Daum, M, Dechenaux, B, Emmenegger, S, Ferraris-Bouchez, L, Flaux, P, Geltenbort, P, Green, K, Griffith, WC, Van Der Grinten, M, Harris, PG, Henneck, R, Hild, N, Iaydjiev, P, Ivanov, SN, Kasprzak, M, Kermaidic, Y, Kirch, K, Koch, HC, Komposch, S, Koss, PA, Kozela, A, Krempel, J, Lauss, B, Lefort, T, Lemiere, Y, Leredde, A, Mohanmurthy, P, Pais, D, Piegsa, FM, Pignol, G, Quéméner, G, Rawlik, M, Rebreyend, D, Ries, D, Roccia, S, Rozpedzik, D, Schmidt-Wellenburg, P, Schnabel, A, Severijns, N, Virot, R, Weis, A, Wursten, E, Wyszynski, G, Zejma, J & Zsigmond, G 2019, 'Magnetic-field uniformity in neutron electric-dipole-moment experiments', Physical Review A, vol. 99, no. 4, 042112. https://doi.org/10.1103/PhysRevA.99.042112

TY - JOUR

T1 - Magnetic-field uniformity in neutron electric-dipole-moment experiments

AU - Abel, C.

AU - Ayres, N. J.

AU - Baker, T.

AU - Ban, G.

AU - Bison, G.

AU - Bodek, K.

AU - Bondar, V.

AU - Crawford, C. B.

AU - Chiu, P. J.

AU - Chanel, E.

AU - Chowdhuri, Z.

AU - Daum, M.

AU - Dechenaux, B.

AU - Emmenegger, S.

AU - Ferraris-Bouchez, L.

AU - Flaux, P.

AU - Geltenbort, P.

AU - Green, K.

AU - Griffith, W. C.

AU - Van Der Grinten, M.

AU - Harris, P. G.

AU - Henneck, R.

AU - Hild, N.

AU - Iaydjiev, P.

AU - Ivanov, S. N.

AU - Kasprzak, M.

AU - Kermaidic, Y.

AU - Kirch, K.

AU - Koch, H. C.

AU - Komposch, S.

AU - Koss, P. A.

AU - Kozela, A.

AU - Krempel, J.

AU - Lauss, B.

AU - Lefort, T.

AU - Lemiere, Y.

AU - Leredde, A.

AU - Mohanmurthy, P.

AU - Pais, D.

AU - Piegsa, F. M.

AU - Pignol, G.

AU - Quéméner, G.

AU - Rawlik, M.

AU - Rebreyend, D.

AU - Ries, D.

AU - Roccia, S.

AU - Rozpedzik, D.

AU - Schmidt-Wellenburg, P.

AU - Schnabel, A.

AU - Severijns, N.

AU - Virot, R.

AU - Weis, A.

AU - Wursten, E.

AU - Wyszynski, G.

AU - Zejma, J.

AU - Zsigmond, G.

N1 - Funding Information: The experimental data were taken at PSI Villigen. We acknowledge the excellent support provided by the PSI technical groups and by various services of the collaborating universities and research laboratories. We gratefully acknowledge financial support from the Swiss National Science Foundation through Projects No. 200020-137664 (PSI), No. 200021-117696 (PSI), No. 200020-144473 (PSI), No. 200021-126562 (PSI), No. 200021-181996 (Bern), No. 200020-172639 (ETH), and No. 200020-140421 (Fri-bourg) and from STFC via Grants No. ST/M003426/1, No. ST/N504452/1, and No. ST/N000307/1. The LPC Caen and the LPSC Grenoble acknowledge the support of the French Agence Nationale de la Recherche (ANR) under Reference No. ANR-09-BLAN-0046 and the ERC Project No. 716651-NEDM. The Polish collaborators wish to acknowledge support from the National Science Center, Poland, under Grant No. 2015/18/M/ST2/00056. P.M. acknowledges Grant No. SERI-FCS 2015.0594. This work was also partly supported by the Fund for Scientific Research Flanders (FWO), and Project GOA/2010/10 of the KU Leuven. In addition we are grateful for access granted to the computing grid PL-Grid infrastructure. The German collaborators wish to acknowledge support from the DFG (DE) Priority Program SPP 1491. Publisher Copyright: © 2019 American Physical Society.

PY - 2019/4/15

Y1 - 2019/4/15

N2 - Magnetic-field uniformity is of the utmost importance in experiments to measure the electric dipole moment of the neutron. A general parametrization of the magnetic field in terms of harmonic polynomial modes is proposed, going beyond the linear-gradients approximation. We review the main undesirable effects of nonuniformities: depolarization of ultracold neutrons and Larmor frequency shifts of neutrons and mercury atoms. The theoretical predictions for these effects were verified by dedicated measurements with the single-chamber neutron electric-dipole-moment apparatus installed at the Paul Scherrer Institute.

AB - Magnetic-field uniformity is of the utmost importance in experiments to measure the electric dipole moment of the neutron. A general parametrization of the magnetic field in terms of harmonic polynomial modes is proposed, going beyond the linear-gradients approximation. We review the main undesirable effects of nonuniformities: depolarization of ultracold neutrons and Larmor frequency shifts of neutrons and mercury atoms. The theoretical predictions for these effects were verified by dedicated measurements with the single-chamber neutron electric-dipole-moment apparatus installed at the Paul Scherrer Institute.

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UR - http://www.scopus.com/inward/citedby.url?scp=85064861275&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.99.042112

DO - 10.1103/PhysRevA.99.042112

M3 - Article

AN - SCOPUS:85064861275

SN - 2469-9926

VL - 99

JO - Physical Review A

JF - Physical Review A

IS - 4

M1 - 042112

ER -

Magnetic-field uniformity in neutron electric-dipole-moment experiments

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