Parts | Days | Selection | Search | Updates | Downloads | Help
HK: Fachverband Physik der Hadronen und Kerne
HK 39: Instrumentierung - Poster
HK 39.52: Poster
Wednesday, March 23, 2011, 14:00–16:00, Foyer Chemie
Design, Construction and Test of a precursor prototype TPC for PANDA — •Rahul Arora — GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
A Time Projection Chamber (TPC) is a very promising option for the central tracker of the PANDA experiment at the new Facility for Antiproton and Ion Research (FAIR) at Darmstadt, Germany. Installed in a ring-type experiment with 2x107 pp annihilations per second it has to be operated continuously despite the presence of space charge effects. These are kept at a bearable level using GEM-based amplification providing an intrinsic suppression of ion backflow. The system promises high-accuracy tracking as well as information on the specific energy-loss and features high momentum resolution of 1% as well as particle-identification capability with a highly homogeneous and low material budget.
As a precursor prototype of a PANDA TPC a large-volume detector with a ring-cylindrical shape of the drift volume of 73 cm length and active diameters of 10/30 cm has been set up. Three GEM foils serve as an amplification stage. The signals of approximately 10.000 hexagonal pads are read out using 42 front end cards.
In this contribution, we will present the design and construction of the detector system and we will report on the results of its commissioning.
This work has been supported by the EU 7th framework and GSI.