Abstract
PANDA is a detector under construction dedicated to studies of production and interaction of particles in the charmonium mass range using antiproton beams in the momentum range of 1.5−15 GeV/c at the Facility for Antiproton and Ion Research (FAIR) in Darmstadt. PANDA consists of two spectrometers: a Target Spectrometer with a superconducting solenoid and a Forward Spectrometer using a large dipole magnet and covering the most forward angles (Θ<10°). In both spectrometers, the particle׳s trajectories in the magnetic field are measured using self-supporting straw tube detectors. The expected high count rates, reaching up to 1MHz/straw, are one of the main challenges for the detectors and associated readout electronics. The paper presents the readout chain of the tracking system and the results of tests performed with realistic prototype setups. The readout chain consists of a newly developed ASIC chip (PASTTREC 〈PANDASTTReadoutChip〉) with amplification, signal shaping, tail cancellation, discriminator stages and Time Readout Boards as digitizer boards.
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