  The Neutron Induced Fission Fragment Tracking Experiment (NIFFTE) is a
double-sided Time Projection Chamber (TPC) with micromegas readout designed to
measure the energy-dependent neutron-induced fission cross sections of the
major and minor actinides with unprecedented accuracy. The NIFFTE project
addresses the challenge of minimizing major sources of systematic uncertainties
from previous fission chamber measurements such as: target and beam
non-uniformities, misidentification of alpha and light charged particles as
fission fragments, and uncertainties inherent to the reference standards used.
In-beam tests of the NIFFTE TPC at the Los Alamos Neutron Science Center
(LANSCE) started in 2010 and have continued in 2011, 2012 and 2013. An overview
of the NIFFTE TPC status and performance at LANSCE will be presented.
