1.
Rev Sci Instrum
; 88(4): 043109, 2017 Apr.
Article
in English
| MEDLINE
| ID: mdl-28456251
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|=13.0 pT/mm, respectively. This field control is used to empirically map Mx magnetometer signal amplitude as a function of the static field (B0) orientation.