Particle identification in a LKr ionization chamber by multiple induced current measurements using the shape analysis of the signal

Abstract Charged particle (π/ K ) separation in the momentum range 0.5–0.7 GeV/ c using a new method of shape analysis of the signal from a liquid krypton ionization chamber has been studied experimentally. The detector has been exposed to pions and protons at the T11 test beam at CERN PS. The shape of preamplifier output signal has been recorded by a waveform digitizer and differentiated to obtain multiple measurements of induced current inside a 2 cm gap. Results on particle separation are presented and compared with a Monte Carlo simulation.