  The Muon $g\textrm{-}2$ Experiment (E989) at Fermilab has a goal of measuring
the muon anomaly ($a_\mu$) with unprecedented precision using positive muons.
This measurement is motivated by the difference between the previous Brookhaven
$a_\mu$ measurement and Standard Model prediction exceeding three standard
deviations, which hints at the possibility of physics beyond the Standard
Model. Muons are circulated in a storage ring, and the measurement requires a
precise determination of the muon anomalous precession frequency (spin
precession relative to momentum) from the resulting decay positron time and
energy measurements collected with calorimeters. The average magnetic field
seen by the muons needs to be known with high precision, and so the storage
ring magnetic field is shimmed to be very uniform and is continually monitored
with nuclear magnetic resonance (NMR) probes. Detailed Muon Campus beamline and
muon storage ring simulations are also required for quantifying beam dynamics
and spin-related systematic effects in the determination of the muon anomalous
precession frequency, e.g. muon losses during the measurement window. At the
time of the conference, the experiment has recently commenced Run-3, and the
release of Run-1 physics results is planned for 2020.
