Particle identification in the Time Projection Chamber at SPring8/LEPS

We study $\Lambda$(1405) photoproduction from C, CH2, and Cu nuclei with Time Projection Chamber (TPC) detector at the SPring-8/LEPS beamline. The photon beam with 1.5-2.9 GeV is produced by backward Compton scattering laser photon from 8 GeV stored electrons. Particle identification (PID) is allowed by dE/dx and momentum measurements with TPC. A good PID capability, that is good $\pi$/p/K separation, is crucially important in order to exclude background contribution caused by miss particle identification. In this talk, the current status of the PID will be presented.