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HK: Fachverband Physik der Hadronen und Kerne
HK 47: Instrumentation und Anwendungen II
HK 47.7: Talk
Friday, March 14, 2008, 15:30–15:45, 2D
The Upgrade of the Multiwire Drift Chambers readout in the HADES experiment at GSI. — •Attilio Tarantola1,4, Burkhard Kolb2, Christian Müntz1, Marek Palka3, Herbert Ströbele1, Joachim Stroth1, and Michael Traxler2 for the HADES collaboration — 1Institut fuer Kernphysik, J. W. Goethe-Universitaet Frankfurt, Germany — 2GSI, Darmstadt, Germany. — 3Jagiellonian University, Krakow, Poland. — 4Helmholtz Research School, Frankfurt. Work supported by BMBF, GSI, EU.
One of the main goals of the HADES upgrade project is the realization of a new data acquisition scheme for the 24 Multiwire Drift Chambers (MDCs), which allows to increase the readout speeds. The general concept of the upgrade is based on the TDC Readout Board (TRB), which will be the common readout platform for all HADES detectors. It has two very high data-rate digital interface connectors for integrating Add-On boards. The MDC Add-On board is the interface to the detector Front End Electronic (FEE). It provides resources to configure the FEE and allows to readout the digital data generated by the FEE. The MDC Add-On, together with the TRB, replaces the existing readout electronics. It communicates with the chamber FEE through parallel bus cables. The MDC Add-On configures and reads out the Time to Digital Converters (TDCs) which are accommodated on FEE boards mounted on the chamber's frames. In a second stage of the upgrade we shall replace the parallel bus with serial optical links, while keeping all DAQ functionalities already achieved in the first stage with the MDC Add-On.