  The SAMURAI Pion Reconstruction and Ion-Tracker Time Projection Chamber
(S$\pi$RIT TPC) was designed to enable measurements of heavy ion collisions
with the SAMURAI spectrometer at the RIKEN Radioactive Isotope Beam Factory and
provide constraints on the Equation of State of neutron-rich nuclear matter.
The S$\pi$RIT TPC has a 50.5 cm drift length and an 86.4 cm $\times$ 134.4 cm
pad plane with 12,096 pads that are equipped with the Generic Electronics for
TPCs readout electronics. The S$\pi$RIT TPC allows excellent reconstruction of
particles and provides isotopic resolution for pions and other light charged
particles across a wide range of energy losses and momenta. Details of the
S$\pi$RIT TPC are presented, along with discussion of the TPC performance based
on cosmic ray and experimental data.
