  Co-sited with TA/TALE, the Non-Imaging CHErenkov Array (NICHE) will measure
the flux and nuclear composition of cosmic rays from below 10^16 eV to 10^18 eV
in its initial deployment. Furthermore, the low-energy threshold can be
significantly decreased below the cosmic ray knee via counter redeployment or
by including additional counters. NICHE uses easily deployable detectors to
measure the amplitude and time-spread of the air-shower Cherenkov signal to
achieve an event-by-event measurement of Xmax and energy, each with excellent
resolution. NICHE will have sufficient area and angular acceptance to have
significant overlap with the TA/TALE detectors to allow for energy
cross-calibration. Simulated NICHE performance has shown that the array has the
ability to distinguish between several different composition models as well as
measure the end of Galactic cosmic ray spectrum.
