Particle Identification using ACTAR TPC Demonstrator.

The active target and time projection chamber (ACTAR-TPC) is a collaborative European project whose goal is to develop a next-generation gas-filled detection system. It uses a gas volume that serves both as a sensitive detector and as the nuclear reaction target itself. The ionization products are drifted towards an amplification and collection plane consisting of 16k 2x2 mm² pads. The ACTAR-TPC demonstrator, which is 1/8 scale of the final design, was built and an experiment was carried out to study the ⁶Li+α and ¹²C+¹²C reactions using a He+CO₂ or C₄H₁₀ gas target.
In this talk, I will report on the analysis for particle identification using the pad detector.
It was performed based on Bragg-curve spectroscopy obtained from the track information.