High-precision control of static magnetic field magnitude, orientation, and gradient using optically pumped vapour cell magnetometry

S. J. Ingleby, P. F. Griffin, A. S. Arnold, Manto Choulaira, E. Riis

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)
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Abstract

An integrated system of hardware and software allowing precise definition of arbitrarily oriented magnetic fields up to |B| = 1 μT within a five-layer Mumetal shield is described. The system is calibrated with reference to magnetic resonance observed between Zeeman states of the 6S1/2 F = 4 133Cs ground state. Magnetic field definition over the full 4π solid angle is demonstrated with one-sigma tolerances in magnitude, orientation, and gradient of δ|B| = 0.94 nT, δθ = 5.9 mrad, and δ|∇B|=13.0δ|∇B|=13.0 pT/mm, respectively. This field control is used to empirically map Mx magnetometer signal amplitude as a function of the static field (B0) orientation.
Original languageEnglish
Article number043109
Number of pages6
JournalReview of Scientific Instruments
Volume88
Issue number4
Early online date24 Apr 2017
DOIs
Publication statusE-pub ahead of print - 24 Apr 2017

Keywords

  • calibration
  • magnetic resonance
  • magnetic field measurements
  • coils
  • optical pumping

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