Abstract
The ALICE High Level Trigger (HLT) is designed to perform event analysis of heavy ion and proton-proton collisions as well as calibration calculations online. A large PC farm, currently under installation, enables analysis algorithms to process these computationally intensive tasks. The HLT receives event data from all major detectors in ALICE. Interfaces to the various other systems provide the analysis software with required additional information. Processed results are sent back to the corresponding systems. To allow online performance monitoring of the detectors an interface for visualizing these results has been developed.
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