  The ANATOMIX beamline at Synchrotron SOLEIL, operational since 2018, is
dedicated to hard X-ray full-field tomography techniques. Operating in a range
of photon energies from approximately 5 to 50 keV, it offers both parallel-beam
projection microtomography, in absorption and phase contrast, and
nanotomography using a zone-plate transmission X-ray microscope. With these
methods, the beamline covers a range of spatial resolution from 20 nm to 20
$\mu$m, expressed in terms of useful pixel size. The variable beam size of up
to 40 mm allows users to image large objects. Here we describe the
microtomography instrumentation of the beamline.
