Bonn 2010 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 30: Instrumentierung V

HK 30.8: Talk

Tuesday, March 16, 2010, 18:30–18:45, HG VIII

ALICE on-line vertex finder — •Sergey Gorbunov — Frankfurt Institute for Advanced Studies, Frankfurt — Kirchhoff Institut für Physik, Heidelberg

A fast on-line vertex finder has been developed for the ALICE High Level Trigger. The algorithm reconstructs the event vertex using only measurements from the Silicon Pixel Detector. It processes up to 3500 events per second, providing the vertex position with the accuracy of 250um in XY and 170um in Z direction. The silicon vertexer supplements the main vertex finder and is used for the on-line monitoring of the ALICE interaction point.