Speaker
Rene Brun
(CERN)
Description
HEP experiments have generally complex geometries that have to be represented and
modelled for several purposes. The most important are simulation and reconstruction,
where people generally do rely on some "ideal" geometry representation that is
modelled within the simulation framework. The problem that the "real" experiment
geometry contains perturbations to this "perfectly aligned" model that needs to be
taken into account. We will present the ongoing efforts within ALICE and ROOT
frameworks to provide support for dealing with mis-alignment information at the level
of ROOT geometry modeller.
