Tübingen 2003 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 25: Instrumentation und Anwendungen III

HK 25.5: Talk

Wednesday, March 19, 2003, 12:30–12:45, C

Performance of the HADES tracking system — •P. Zumbruch¹, J. Bielcik¹, R. Holzmann¹, J. Markert², Ch. Müntz¹, H. Agakichiev¹, V. Pechenov¹, Y. Pachmayer², J Stroth^1,2, and Ch. Sturm¹ — ¹GSI Darmstadt — ²Univ. Frankfurt

We present preliminary pion and proton spectra recorded during a commissioning run of the Dilepton Spectrometer HADES at GSI. The collisions system investigated was C+C at 1.9 GeV/u. In total 40 Million events were taken. Rapidity and transverse momentum distributions of pions will be compared to existing data [1]. The presentation will also focus on the performance of the HADES tracking system which is currently composed of 18 low-mass, high-granular drift chambers arranged in four planes, each two in front of and behind a super conducting toroidal magnet. The particle and momentum dependent detection efficiency will be reported as well as a concept for particle id (PID) reviewed.

[1] F.Laue and the KAOS Collaboration, PRL 82(99)1640