Title :
Software for the LHCb experiment
Author :
Corti, Gloria ; Cattaneo, Marco ; Charpentier, Philippe ; Frank, Markus ; Koppenburg, Patrick ; Mato, Pere ; Ranjard, Florence ; Roiser, Stefan ; Belyaev, Ivan ; Barrand, Guy
Author_Institution :
CERN, Geneva, Switzerland
fDate :
6/1/2006 12:00:00 AM
Abstract :
LHCb is an experiment for precision measurements of CP-violation and rare decays in B mesons at the LHC collider at CERN. The LHCb software development strategy follows an architecture-centric approach as a way of creating a resilient software framework that can withstand changes in requirements and technology over the expected long lifetime of the experiment. The software architecture, called GAUDI, supports event data processing applications that run in different processing environments ranging from the real-time high-level triggers in the online system to the final physics analysis performed by more than 100 physicists. The major architectural design choices and the arguments that lead to these choices will be outlined. Object oriented technologies have been used throughout. Initially developed for the LHCb experiment, GAUDI has been adopted and extended by other experiments. Several iterations of the GAUDI software framework have been released and are now being used routinely by the physicists of the LHCb collaboration to facilitate their development of data selection algorithms. The LHCb reconstruction (Brunel), the digitization (Boole) and analysis (DaVinci) applications together with the simulation application (Gauss), also based on Geant4, and event and detector visualization program (Panoramix) are all based on the GAUDI framework. All these applications are now in production.
Keywords :
B mesons; CP invariance; high energy physics instrumentation computing; meson hadronic decay; nuclear electronics; B mesons; CERN; CP-violation; GAUDI; Geant4; LHC collider; LHCb Experiment; LHCb reconstruction; LHCb software development strategy; analysis applications; architecture-centric approach; data selection algorithms; detector visualization program; digitization applications; event data processing applications; final physics analysis; object oriented technologies; online system; rare decays; real-time high-level triggers; resilient software framework; simulation application; software packages; Application software; Collaborative software; Data processing; Large Hadron Collider; Mesons; Performance analysis; Physics; Programming; Real time systems; Software architecture; Programming; software; software packages;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2006.872627