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Tübingen 2003 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 12: Poster-Sitzung: Instrumentation und Anwendungen

HK 12.19: Poster

Tuesday, March 18, 2003, 13:30–15:30, Foyer

The new TAPS electronics and Data Acquisition System — •Peter Drexler and Ralf Gregor — II. Physikalisches Institut, Heinrich-Buff-Ring 16, 35392 Giessen

To adapt the photonspectrometer TAPS to the needs of advanced, state-of-the-art experiments, a completely new readout for 4 detector channels per module has been designed to replace and improve the currently used electronics. The main goal for the new design has been the need for a better handling, easier maintainance, improved performance and the capability to cope with higher rates. The readout of a typical TAPS-BaF2-signal comprises 4 QACs for the separate integration of the long and short scintillation components in two different dynamic ranges, a TAC and 2 LEDs for more sophisticated trigger conditions. A CFD is included to optimize the timing information. A PLD provides the slow control. These combined analog and digital functions are implemented on a piggyback residing on a commercial motherboard, developed by the HADES collaboration. The results of an in-beam test experiment at ELSA and the concept of the new data acquisition will be presented.

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