Mainz 2012 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 46: Poster – Schwerionenkollisionen und QCD Phasen
HK 46.3: Poster
Donnerstag, 22. März 2012, 14:00–16:00, P Foyer
New HADES taking off — •Katharina Gill1, Tetyana Galatyuk1,2, Olga Pechenova1, Vladimir Pechenov3, and Joachim Stroth1,3 — 1Goethe-Universität, Frankfurt — 2ExtreMe Matter Institute EMMI, Darmstadt — 3GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt
The HADES detector, installed at the GSI Helmholtzzentrum für Schwerionenforschung, is a unique apparatus to search for new states of matter with rare and penetrating probes. So far, due to the limited granularity of the inner time-of-flight system, measurements were restricted to medium size collision systems. The combined measurement of di-electrons and strangeness in Ar+KCl collisions has provided intriguing results and ask for a heavier collision systems and a higher statistics. A mayor improvement of the spectrometer in terms of granularity and particle identification capability is achieved with the new RPC time-of-flight detectors. The data acquisition was fully replaced introducing a modular system integrating trigger distribution, data transfer and a slow control data traffic to a single optical link. During the 64 hours of the commissioning beam time in August 2011, 17 TByte of data were taken for Au+Au collisions at Ekin = 1.24 GeV/u.
We present a study of the particle identification capabilities of the new HADES spectrometer. Electrons, pions, kaons, protons and light nuclei can be identified over a broad momentum range after a precise detector alignment and calibration.
Supported by BMBF (06 FY 9100 I), HIC for FAIR, EMMI and GSI.