  A new time projection chamber (TPC) was developed for neutron lifetime
measurement using a pulsed cold neutron spallation source at the Japan Proton
Accelerator Research Complex (J-PARC). Managing considerable background events
from natural sources and the beam radioactivity is a challenging aspect of this
measurement. To overcome this problem, the developed TPC has unprecedented
features such as the use of polyether-ether-ketone plates in the support
structure and internal surfaces covered with $^6$Li-enriched tiles to absorb
outlier neutrons. In this paper, the design and performance of the new TPC are
reported in detail.
