Gießen 2007 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 34: Instrumentation und Anwendungen

HK 34.4: Talk

Wednesday, March 14, 2007, 15:00–15:15, B

Prototype of a Dedicated Multi-Node Data Processing System for Realtime Trigger and Analysis Applications — •Daniel Georg Kirschner for the HADES collaboration — II. Phys. Inst. Giessen, Heinrich-Buff-Ring 14, 35392 Giessen

Modern experiments in hadron physics like the HADES detector at GSI Darmstadt produce a large amount of data that has to be distributed, stored and analyzed. Analysis of this data is time consuming due to the large amount of data and the complex algorithms needed.

One approach to these topics are custom made systems like the GEMN (Gigabit Ethrenet Multi Node), designed and build in Giessen. The developed prototype features two Gigabit Ethernet connections and a TigerSHARC DSP.

As test for the capabilities of this system the results of an example application in the context of the HADES experiment (@GSI) are presented: online correlation of the θ and φ information of rings in the RICH detector with fired wires in the drift chambers to filter out fake rings and by this reducing data rate to the storage system and saving time in the offline analysis.

Supported by: BMBF 06 GI 180, BMBF 06 GI 179.