Speaker
F. Gaede
(DESY IT)
Description
LCIO is a persistency framework and data model for the next linear
collider. Its original implementation, as presented at CHEP 2003,
was focused on simulation studies. Since then the data model has
been extended to also incorporate prototype test beam data,
reconstruction and analysis. The design of the interface has also
been simplified. LCIO defines a common abstract user interface (API)
in Java, C++ and Fortran in order to fulfill the needs of the global
linear collider community. It is designed to be lightweight and
flexible without introducing additional dependencies on other software
packages.
User code is completely separated from the concrete persistency
implementation. SIO, a simple binary format that supports data
compression and pointer retrieval is the current choice. LCIO is
implemented in such a way that it can also be used as the transient
data model in any linear collider application, e.g. a modular
reconstruction program
can use the LCIO event class (LCEvent) as the container for the
modules' input and output data. As LCIO offers a common API for three
languages it is also possible to construct a multi-language
reconstruction framework that would facilitate the integration of
already existing algorithms.
A number of groups has already incorporated LCIO in their software
frameworks and others plan to do so.
We present the design and implementation of LCIO, focusing on new
developments and uses.
Primary authors
F. Gaede
(DESY IT)
H. Vogt
(DESY)
N. Graf
(SLAC)
R. Cassell
(SLAC)
T. Behnke
(DESY)
T. Johnson
(SLAC)
