Journal article

Design and performance of an absolute 3He/Cs magnetometer

  • Koch, Hans-Christian Physics Department, University of Fribourg, Switzerland - Department of Physics, Johannes Gutenberg-University, Mainz, Germany
  • Bison, Georg Paul Scherrer Institute, Villigen, Switzerland
  • Grujić, Zoran D. Physics Department, University of Fribourg, Switzerland
  • Heil, Werner Department of Physics, Johannes Gutenberg-University, Mainz, Germany
  • Kasprzak, Malgorzata Physics Department, University of Fribourg, Switzerland
  • Knowles, Paul E. Physics Department, University of Fribourg, Switzerland
  • Kraft, Andreas Department of Physics, Johannes Gutenberg-University, Mainz, Germany
  • Pazgalev, Anatoly Ioffe Physical Technical Institute, Russian Academy of Sciences, St. Petersburg, Russia
  • Schnabel, Allard Physikalisch-Technische Bundesanstalt Institut, Berlin, Germany
  • Voigt, Jens Physikalisch-Technische Bundesanstalt Institut, Berlin, Germany
  • Weis, Antoine Physics Department, University of Fribourg, Switzerland
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    21.08.2015
Published in:
  • The European Physical Journal D. - 2015, vol. 69, no. 8, p. 1–12
English We report on the design and performance of a highly sensitive combined ³He/Cs magnetometer for the absolute measurement of magnetic fields. The magnetometer relies on the magnetometric detection of the free spin precession of nuclear spin polarized ³He gas by optically pumped cesium magnetometers. We plan to deploy this type of combined magnetometer in an experiment searching for a permanent electric dipole moment of ultracold neutrons at the Paul-Scherrer Institute (Switzerland). A prototype magnetometer was built at the University of Fribourg (Switzerland) and tested at Physikalisch-Technische Bundesanstalt (Berlin, Germany). We demonstrate that the combined magnetometer allows Cramér-Rao-limited field determinations with recording times in the range of, measurements above being limited by the stability of the applied magnetic field. With a recording time we were able to perform an absolute measurement of a magnetic field of ≈ with a standard uncertainty of, corresponding to ΔB/B < 6 ×10⁻⁸.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/304507
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