Darmstadt 2016 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

HK: Fachverband Physik der Hadronen und Kerne

HK 45: Postersession

HK 45.39: Poster

Mittwoch, 16. März 2016, 18:30–20:30, S1/05 22-24

The new FPGA based discriminator board for the CBELSA/TAPS Experiment — •Eugenia Fix for the CBELSA/TAPS collaboration — HISKP, Universität Bonn

The Crystal Barrel calorimeter at ELSA, which consists of 1320 CsI(Tl) crystals has been upgraded by a new Avalanche Photo Diode (APD) crystal readout.The APD readout electronics will provide a fast trigger signal down to 10 MeV energy deposit per single crystal. The processing of these trigger signals requires the development of a previously not existent timing branch of the readout chain of the Crystal Barrel calorimeter. Core component of the timing branch is a newly developed, FPGA based discriminator board. Its firmware contains modules for time to digital conversion, rise time compensation and parts of a cluster finder. In addition the reference voltages and discriminator thresholds are controlled and monitored. This poster presents the design and the achievable accuracy of the new discriminator.

Supported by the Deutsche Forschungsgemeischaft (SFB/TR16) and Schweizerischer Nationalfonds.