Mainz 2012 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 34: Instrumentation

HK 34.8: Vortrag

Mittwoch, 21. März 2012, 18:45–19:00, P 2

Comparision of self-triggering front-end electronics for CBM detector prototyping — •Tomas Balog — GSI, Darmstadt, Germany — Comenius University, Bratislava, Slovakia

The CBM experiment requires high-rate capable readout electronics. Since the Poisson-distributed collisions of nuclei are not correlated to a global trigger signal, the readout chips as well as the complete data acquisition system must be self-triggered. The n-XYTER chip was developed for neutron experiments and is also used for early prototyping of CBM detectors. The SPADIC chip has been designed for the read-out of gaseous detectors of CBM. Their main difference is in the data storing and ordering mechanisms. The n-XYTER chip uses a Token Ring while the SPADIC chip has an ordering FIFO. Simulation studies have been done for both chips in the SystemC hardware description language. In order to achieve a proper comparision, both chips had the same number of channels with the same FIFO depth per channel, and both were simulated at the same bandwidth and hit rates. Resutlts of the simulations are presented including the proper size of the ordering FIFO and a comparision of the performance of both front-end chips. Supported by HadronPhysics3 and EU-FP7 MC-PAD.