Münster 2002 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 14: Poster Session: Instrumentation and Applications

HK 14.2: Poster

Dienstag, 12. März 2002, 10:30–12:45, Foyer Chemie

Impact of the calibration of the HADES drift chambers on the quality of the tracking — •Peter Zumbruch — GSI, Gesellschaft für Schwerionenforschung, Darmstadt, Germany

HADES, a High Acceptance DiElectron Spectrometer, is a second generation experiment at the GSI SIS facility in Darmstadt. Its scientific program includes studies of in-medium properties of hadrons in hadronic matter and the electromagnetic structure of hadrons.

High quality tracking is needed to provide a high invariant mass resolution (1 background.

In the HADES setup a high precision tracking is performed by two pairs of two multiwire drift chamber (MDC) modules in front and behind of the toroidial magnet field.

The quality of the tracking is mainly affected by the performance and the alignment of the individual chambers as well as the accuracy of the drift time measurements. Hence, precise time calibration strategies - developed with data and simulation - are essential to meet the ambitious design goals of HADES.

supported by

GSI, BMBF, DFG, INTAS, EC