Speaker
Dr
V. Tioukov
(INFN NAPOLI)
Description
OPERA is a massive lead/emulsion target for a long-baseline neutrino
oscillation search. More then 90% of the useful experimental data in OPERA
will be produced by the scanning of emulsion plates with the automatic microscopes.
The main goal of the data processing in OPERA will be the search, analysis and
identification of primary and secondary vertexes produced by neutrino in
lead-emulsion target.
The volume of middle and high-level data to be analysed and stored
is expected to be of the order of several Gb per event. The storage,
calibration, reconstruction, analysis and visualization of this data is
the task of FEDRA - system written in C++ and based on ROOT framework.
The system is now actively used for processing of test beams and simulation
data. Several interesting
algoritmic solutions permits us to make very effective code for fast pattern
recognition in heavy signal/noise conditions. The system consists of the storage
part,
intercalibration and segments linking part, track finding and fitting, vertex
finding and fitting and kinematical analysis parts. Kalman Filteing technique is
used
for tracks&vertex fitting. ROOT-based event display is used for interactive analysis
of the special events.
Primary author
Dr
V. Tioukov
(INFN NAPOLI)
