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HK: Physik der Hadronen und Kerne

HK 48: Instrumentation and Applications VI

HK 48.3: Vortrag

Donnerstag, 14. März 2002, 16:45–17:00, F

HADES Drift Chambers (MDC III) — •Kalliopi Kanaki, Frank Dohrmann, Rugard Dressler, Wolfgang Enghardt, Eckart Grosse, Klaus Heidel, Jochen Hutsch, Burkhard Kämpfer, Roland Kotte, Lothar Naumann, Alexandre Sadovski, Joachim Seibert, and Manfred Sobiella — Forschungszentrum Rossendorf, Institut für Kern- und Hadronenphysik, Dresden, Germany

The starting experiments with the High Acceptance Di-Electron Spectrometer (HADES) at GSI/Darmstadt require a momentum resolution of about 1%, i.e. the determination of particle tracks with a precision better than 100 µm. The tracking is accomplished mainly by large-area Multiwire Drift Chambers. Four of the MDC’s of the third plane (MDC III), produced in the Research Centre Rossendorf, have been already installed in the HADES spectrometer. In this talk, the technical aspects of the MDC III construction, the operational characteristics, and several tests performed are discussed. We also presented simulations of the electrical field configurations and resulting drift velocity patterns which are aimed at an optimision of the chamber performance.