Darmstadt 2008 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 38: Instrumentation und Anwendungen II
HK 38.6: Talk
Thursday, March 13, 2008, 18:00–18:15, 2D
Development of a GEM-based TPC for PANDA — •Christian Höppner, Bernhard Ketzer, Igor Konorov, Alexander Mann, Sebastian Neubert, Stephan Paul, Quirin Weitzel, and Lisa Wörner for the PANDA collaboration — Technische Universität München, Physik Department E18, 85748 Garching, Germany
A TPC is considered as the central tracker of the PANDA experiment, which is currently being planned at the new accelerator complex FAIR at Darmstadt. PANDA is designed as an internal target experiment at the antiproton storage ring HESR. The central tracker has to measure particle trajectories over a wide momentum range (0.1 - 8 GeV/c) from up to 2· 107 antiproton-proton annihilations/s. The continuous nature of the antiproton beam makes the use of a traditional ion gate impractical. Owing to their intrinsic ion suppression properties, GEM foils are planned as the amplification stage. A small prototype of this GEM-TPC (diameter 200 mm, drift length 77 mm) has been built and characterized with cosmic muons. Results such as spatial resolution, cluster distributions, and diffusion properties are presented in this talk.
This work is supported by the 6th Framework Program of the EU (contracts No. RII3-CT-2004-506078 and 515873-DS), the German Bundesministerium für Bildung und Forschung (06MT245I), the Cluster of Excellence for Fundamental Physics (EXC153), and the Maier-Leibnitz-Labor der LMU und TU München.