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Electric Field and Drift Characteristics Studies for the Multiwire Chambers of the Third Plane of HADES

Aim of this report is the investigation of suitable operational conditions for the drif{}t chambers MDC III installed in the HADES setup. The simulations performed showed that operating the drif{}t chambers in a mode with nearly constant electron drif{}t velocity in a predominant part of the cell allows a more precise and fast tracking. This is particularly important for electrons and positrons; here the invariant dilepton mass must be reconstructed with high precision to get a resolution of $\Delta M/M\approx 1\%$ for the $\omega$ and $\phi$ mass peaks and thus a chance to verify also small in-medium mass shif{}ts. This helps to realize the physics program at HADES which focuses on the search for such mass shif{}ts to get insight into the in-medium behaviour of hadrons in dense strongly interacting matter.

Identiferoai:union.ndltd.org:DRESDEN/oai:qucosa.de:bsz:d120-qucosa-29306
Date31 March 2010
CreatorsKanaki, Kalliopi
ContributorsForschungszentrum Rossendorf, Institut für Strahlenphysik
PublisherForschungszentrum Dresden
Source SetsHochschulschriftenserver (HSSS) der SLUB Dresden
LanguageEnglish
Detected LanguageEnglish
Typedoc-type:report
Formatapplication/pdf
SourceWissenschaftlich-Technische Berichte / Forschungszentrum Rossendorf; FZR-365 Januar 2003
Relationdcterms:isPartOf:Wissenschaftlich-technische Berichte ; FZR-365

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