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Bonn 2010 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 36: Postersitzung

HK 36.2: Poster

Mittwoch, 17. März 2010, 14:00–16:00, HG Aula

Development of High Level Trigger Applications for the ALICE TRD — •Theodor Rascanu — Institut für Kernphyisk, Frankfurt, Germany

With the first beam of the CERN LHC, the ALICE experiment has succesfully started. During its operation each detector of the experiment is continuously producing large amounts of raw data, e.g. 2.5GB/s in the case of the Transition Radiation Detector (TRD). The data of the main ALICE detectors is analyzed online by a High Level Trigger system (HLT). The HLT performs a fast first analysis of the data and preselects interesting or rare events thus the data volume is reduced to a suitable size for the Data Acquisition system (DAQ).

This talk will give an overview of the HLT analysis system of the ALICE TRD. Cluster finding and tracking components build a common basis for the online calibration of the TRD and for various physics trigger scenarios. Studies of the reconstruction performance and further optimizations of the system based on cosmic ray and first collision data will be presented.

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