Speaker
Dr
J. Katzy
(DESY, HAMBURG)
Description
During the years 2000 and 2001 the HERA machine and the H1
experiment performed substantial luminosity upgrades. To cope with
the increased demands on data handling an effort was made to
redesign and modernize the analysis software. Main goals were to
lower turn-around time for physics analysis by providing a single
framework for data storage, event selection, physics analysis and
event display. The new object oriented analysis environment is using
C++ and is based on the RooT framework. Data layers with a high
level of abstraction are defined, i.e. physics particles, event
summary information and user specific information.
A generic interface makes the use of reconstruction output stored
in BOS format transparent to the user. Links between all data layers
and partial event reading allow correlating quantities of different
abstraction levels with high performance. Detailed physics
analysis is performed by passing transient data between different
analysis modules. Binding of existing fortran based libraries on
demand allows the use of existing utility functions and interface to
the existing data base. On this basis tools with enhanced
functionality are provided. This framework has become standard for
data analyses of the previously and currently collected data.
Primary author
Dr
J. Katzy
(DESY, HAMBURG)
