Journal article

Development of a 3He magnetometer for a neutron electric dipole moment experiment

  • Kraft, Andreas Institute of Physics, Johannes Gutenberg University, Mainz, Germany - CENPA, Department of Physics, University of Washington, Seattle, USA
  • Koch, Hans-Christian Institute of Physics, Johannes Gutenberg University, Mainz, Germany - Physics Department, University of Fribourg, Switzerland
  • Daum, Manfred Paul Scherrer Institute, Villigen, Switzerland
  • Heil, Werner Institute of Physics, Johannes Gutenberg University, Mainz, Germany
  • Lauer, Thorsten Institute of Physics, Johannes Gutenberg University, Mainz, Germany - Forschungs-Neutronenquelle Heinz Maier-Leibnitz (FRM-II), Garching, Germany
  • Neumann, Daniel Institute of Physics, Johannes Gutenberg University, Mainz, Germany
  • Pazgalev, Anatoly Ioffe Institute, St Petersburg, Russian Federation
  • Sobolev, Yuri Institute of Nuclear Chemistry, Johannes Gutenberg University, Mainz, Germany - Petersburg Nuclear Physics Institute, Gatchina, Russian Federation
  • Weis, Antoine Physics Department, University of Fribourg, Switzerland
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    01.10.2014
Published in:
  • EPJ Techniques and Instrumentation. - 2014, vol. 1, no. 1, p. 8
English We have developed a highly sensitive 3He magnetometer for the accurate measurement of the magnetic field in an experiment searching for an electric dipole moment of the neutron. By measuring the Larmor frequency of nuclear spin polarized 3He atoms a sensitivity on the femto-Tesla scale can be achieved. A 3He/Cs-test facility was established at the Institute of Physics of the Johannes Gutenberg University in Mainz to investigate the readout of 3He free induction decay with a lamp-pumped Cs magnetometer. For this we designed and built an ultra-compact and transportable polarizer unit which polarizes 3He gas up to 55% by metastability exchange optical pumping. The polarized 3He was successfully transfered from the polarizer into a glass cell mounted in a magnetic shield and the 3He free induction decay was detected by a lamp-pumped Cs magnetometer.PACS numbers07.55.Ge Magnetometers for magnetic field measurements; 13.40 Electric and magnetic moments; 14.20 Protons and neutrons.
Faculty
Faculté des sciences
Department
Physique
Language
  • English
Classification
Physics
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https://folia.unifr.ch/unifr/documents/304145
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