  We present end-to-end simulations of SCALES, the third generation
thermal-infrared diffraction limited imager and low/med-resolution integral
field spectrograph (IFS) being designed for Keck. The 2-5 micron sensitivity of
SCALES enables detection and characterization of a wide variety of exoplanets,
including exoplanets detected through long-baseline astrometry, radial-velocity
planets on wide orbits, accreting protoplanets in nearby star-forming regions,
and reflected-light planets around the nearest stars. The simulation goal is to
generate high-fidelity mock data to assess the scientific capabilities of the
SCALES instrument at current and future design stages. The simulation processes
arbitrary-resolution input intensity fields with a proposed observation pattern
into an entire mock dataset of raw detector read-out lenslet-based IFS frames
with calibrations and metadata, which are then reduced by the IFS data
reduction pipeline to be analyzed by the user.
