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

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 gr...

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Bibliographic Details
Published in:Review of scientific instruments 2017-04, Vol.88 (4), p.043109-043109
Main Authors: Ingleby, S. J., Griffin, P. F., Arnold, A. S., Chouliara, M., Riis, E.
Format: Article
Language:English
Subjects:
Cesium 133
Cesium isotopes
Magnetic fields
Magnetic measurement
Magnetic resonance
Orientation
Scientific apparatus & instruments
Tolerances
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Summary: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 | = 13.0 pT/mm, respectively. This field control is used to empirically map Mx magnetometer signal amplitude as a function of the static field (B0) orientation.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4980159