München 2006 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 21: Postersitzung

HK 21.65: Poster

Dienstag, 21. März 2006, 15:30–17:00, P

The RPC TOF System of CBM — •Everard Cordier — Universität Heidelberg, Germany

The Compact Baryonic Matter (CBM) Experiment is dedicated to the study of the dense matter via heavy-ion collisions at energies larger than 20 GeV/nucleon. For the identification of hadrons a time of flight (TOF) subdetector system will be used. A time resolution better than 80 ps is required with an efficiency close to 100% over the full acceptance from 3^∘ to 28^∘ at a distance of 10 m. The total area of the TOF system is in the order of 100 m². Despite the very different rates changing with the polar angle from 1 kHz/cm² to 20 kHz/cm² the response over the full area has to be homogeneous.

The status of the R&D towards a TOF wall made of mutligap resistive plate chambers (RPC) concerning the timing, the rate performance and the present layout will be presented.