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; M. Chouliara; E. Riis

doi:10.1063/1.4980159

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arXiv · 1704.00980

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·M. Chouliara·E. Riis

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Abstract

An integrated system of hardware and software allowing precise definition of arbitrarily oriented magnetic fields up to |B| = 1 {\mu}T within a five-layer mumetal shield is described. The system is calibrated with reference to magnetic resonance observed between Zeeman states of the 6S$_{1/2}$ F = 4 $^{133}$Cs ground state. Magnetic field definition over the full 4{\pi} solid angle is demonstrated, with one-sigma tolerances in magnitude, orientation and gradient of {\delta}|B| = 0.94 nT, {\delta}{\theta} = 5.9 mrad and {\delta}$\nabla$ 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.

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S. J. Ingleby, P. F. Griffin, A. S. Arnold, M. Chouliara, E. Riis. 2017-04-04. High-precision control of static magnetic field magnitude, orientation, and gradient using optically pumped vapour cell magnetometry. https://doi.org/10.1063/1.4980159

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