Dynamic stabilization of the magnetic field surrounding the neutron electric dipole moment spectrometer at the Paul Scherrer Institute
Year: 2014
Type: article
Abstract: The Surrounding Field Compensation (SFC) system described in this work is installed around the four-layer Mu-metal magnetic shield of the neutron electric dipole moment spectrometer located at the Paul Scherrer Institute. The SFC system reduces the DC component of the external magnetic field by a factor of about 20. Within a control volume of approximately 2.5 m × 2.5 m × 3 m, disturbances of the magnetic field are attenuated by factors of 5–50 at a bandwidth from 10−3 Hz up to 0.5 Hz, which corresponds to integration times longer than several hundreds of seconds and represent the important timescale for the neutron electric dipole moment measurement. These shielding factors apply to random environmental noise from arbitrary sources. This is achieved via a proportional-integral feedback stabilization system that includes a regularized pseudoinverse matrix of proportionality factors which correlates magnetic field changes at all sensor positions to current changes in the SFC coils.
Source: Journal of Applied Physics
DOI: 10.1063/1.4894158
Authors: S. Afach, G. Bison, K. Bodek, F. Burri, Z. Chowdhuri, M. Daum, M. Fertl, B. Franke, Z. Grujic, V. Hélaine, R. Henneck, M. Kasprzak, K. Kirch, H.-C. Koch, A. Kozela, J. Krempel, B. Lauss, T. Lefort, Y. Lemière, M. Meier, O. Naviliat-Cuncic, F. M. Piegsa, G. Pignol, C. Plonka-Spehr, P. N. Prashanth, G. Quéméner, D. Rebreyend, S. Roccia, P. Schmidt-Wellenburg, A. Schnabel, N. Severijns, J. Voigt, A. Weis, G. Wyszynski, J. Zejma, J. Zenner, G. Zsigmond
Institutions: Paul Scherrer Institute, ETH Zurich, Jagiellonian University, University of Fribourg, Laboratoire de Physique Corpusculaire de Caen, Johannes Gutenberg University Mainz, Institute of Nuclear Physics, Polish Academy of Sciences, Laboratoire de Physique Subatomique et de Cosmologie, KU Leuven, Université Paris-Sud, Centre National de la Recherche Scientifique, Institut National de Physique Nucléaire et de Physique des Particules, Physikalisch-Technische Bundesanstalt
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, European Commission, Agence Nationale de la Recherche, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Fundacja na rzecz Nauki Polskiej, Eidgenössische Technische Hochschule Zürich, Fonds Wetenschappelijk Onderzoek, KU Leuven, Paul Scherrer Institut, Narodowym Centrum Nauki, Université de Fribourg, Vlaamse regering, European Regional Development Fund
Awards: Search for the neutron EDM at the high intensity ultracold neutron source at PSI with an upgraded high sensitivity spectrometer – Follow-up application, Measurement of the neutron electric dipole moment, Optical magnetometry for a new neutron EDM experiment, G1893237010, G2322385174, Spatially resolved magneto-relaxation of in-vitro magnetic nanoparticles using atomic magnetometry, Search for the neutron EDM at the high intensity ultracold neutron source at PSI with an upgraded high sensitivity spectrometer, G5599649393, G628552264, G7825994806, Measurement of the neutron electric dipole moment, Mesure du moment électrique dipolaire du neutron, G993971353
OpenAlex ID: W1989486754