(University College London)
Within the last years, the HepMC data format has established itself as the
standard data format for simulation of high-energy physics interactions and is
commonly used by all four LHC experiments. At the energies of the
proton-proton collisisions at the LHC, a full description of the generation of
these events and the subsequent interactions with the detector typically
involves several thousand particles and several hundred vertices. Currently, the
HepMC libraries only provide a text-based representation of these events.
HepMCVisual is a visualization package for HepMC events, allowing to
interactively browse through the event. Intuitive user guiding and the
possibility of expanding/collapsing specific branches of the interaction tree
allow quick navigation and visualization of the specific parts of the event of
interest to the user. Thus, it may be usefull not only for physics users
trying to understand the structure of single events, but may also be
a valuable tool for debugging MonteCarlo event generators.
Being based on the ROOT graphics libraries, HepMC Visual can be used as a standalone library, as
well as interactively from the ROOT console or in combination with the
HepMCBrowser interface within the ATLAS software framework. A short description
of the user interface and the API will be presented.
HepMC Visual is a library allowing to visually display and interactively browse through the complex and comprehensive HepMC event records commonly used at all LHC experiments. It may be used in standalone applications, as well as interactively within the ROOT data analysis package or through the HepMC Browser interface integrated in the ATLAS software framework.