出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：ALICE (A Large Ion Collider Experiment) is the general-purpose experiment at the CERN Large Hadron Collider (LHC) designed for heavy ion (HI) physics. ALICE will collect data at a rate of 1.25 GB/s during heavy ion runs, and at a rate of 100 MB/s during p-p data taking. In a standard data taking year, comprising of several months of p-p, one month of HI running and the associated Monte Carlo (MC) simulation, the expected total data volume is of the order of 2 PB. This includes raw data, reconstructed data (both Event Summary Data - ESD, and Analysis Object Data - AOD) and the calibration, environment and alignment data (conditions) necessary for the reconstruction and physics analysis. The extraction and publication of the conditions data is handled by a system called Shuttle. Detector-specific routines, called preprocessors which are integrated in the Shuttle framework, process the data from online sources and produce the final conditions objects. The Shuttle itself provides access to the online conditions data sources, controls the execution of the preprocessors and publishes the conditons data on the Grid.
