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HK: Physik der Hadronen und Kerne

HK 22: Postersitzung

HK 22.45: Poster

Montag, 7. März 2005, 16:30–18:00, TU MA141

Simulation of a GEM based TPC for PANDA — •Sebastian Neubert, Bernhard Ketzer, Igor Konorov, Stephan Paul, Lars Schmitt, and Quirin Weitzel — Physik Department, TU München, D-85748 Garching

PANDA is an universal detector system, which is proposed in the scope of the FAIR project at Darmstadt, Germany and is dedicated to high statistics measurements in QCD physics. At the HESR antiproton storage ring the formation of the full charmonium spectrum will be possible, allowing the determination of the observables of these states (e.g. η_c) with an unprecedented precision. Among other topics, valuable information on the quark-confining potential will be extracted from this data.

One key component of modern spectrometer systems is the central tracking device. An interesting option for the PANDA-tracker is to use a TPC, which in combination with the GEM technology makes a 3D-tracking detector with ideal properties: very low radiation length, very good spatial resolution and the ability to provide particle identification (PID) at low momenta.

This talk presents results from monte carlo simulations of such an apparatus. The advantage of PID-capability is demonstrated for the reconstruction of the η_c → 4K decay channel. The basic performances of the TPC-tracker are shown and the problem of space charge accumulation in the high rate environment is tackled.

† supported by Maier-Leibniz-Labor der TU und LMU München, BMBF and EU