  This paper presents the design and experimental characterization of a 1 T
electromagnet tailored to meet the demands of a Magnetic Resonance Imaging
(MRI) system conceived for spatial resolutions at the level of tens of microns.
For high image quality, MRI requires an homogeneous magnetic field over the
Field of View (FoV) where the sample is imaged. We measure the relative
inhomogeneity of the field generated by our magnet to be well below 100 parts
per million over a spherical FoV of 20 mm diameter, while strongly constraining
fringe field lines to avoid interference with other devices. The magnet
performance closely follows our expectations from numerical simulations in all
the experimental tests carried out. Additionally, we present the solutions
adopted for thermal management and the design of a mechanical structure to
distribute the weight and integrate the platform to move the sample in and out
of the magnet.
