The P ̄ANDA experiment is one of the pillars of the future Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany. The P ̄ANDA physics program is focused on answering fundamental questions re- lated to Quantum Chromodynamics (QCD), mostly in the non-perturbative energy regime, using antiproton collisions on proton and nucleon targets. The central Straw Tube Tracker (STT) will be the main tracking detector of the P ̄ANDA target spectrometer. The main tasks of the STT will be the measurement of the particle momentum from the reconstructed tracks (with a spatial resolution ≃ 150 μm transversal) and the measurement of the specific energy-loss for particle identification (with an energy resolution better than 10%), especially for particles with momenta below 1 GeV/c. In this work, results obtained with a prototype STT using a proton beam with different momenta are shown and discussed, with an emphasis to the spatial resolution and the energy-loss for the different momenta.

The PANDA (anti-Proton ANnihiliation at DArmstadt) experiment will be a multi- purpose apparatus at the future Facility for Antiproton and Ion Research (FAIR) at Darmstadt. Anti-proton induced reactions with 1.5 to 15 GeV/c beam momentum at high luminosities of up to 2·1032/(s·cm2) will be investigated. Exclusive detection of whole events with almost 4π acceptance and high precision are needed for the broad physics program. The focus lies on studying the strong interaction in the charm region, by charmonium, open-charm and baryon spectroscopy, and includes the search for glueballs, hybrids and other exotics, hypernuclear physics, nucleon structure studies as well as in-medium modifications of hadrons.