The FINUDA Online Monitoring
and Event Display System
The Finuda Online Monitor and Event
Display task is the real time control of the detector performance and stability,
together with a data pre-analysis; it must be flexible, fast, user friendly
and, according to the evolution in the field of computing, it must also
work in a Unix-like environment. Moreover, it must allow a remote detector
performance control.
The monitoring system is based
on the re-organization of the Raw Data Tape (RDT) into a
so-called Hit Data Tape (HDT), in which the event is structured
as a ROOT tree, with a branch for every detector. The different
branches, filled with hit objects, are easily correlated to each
other by dedicated interactive macros. This design allows a high degree
of flexibility, an essential feature for an online monitoring system.
The event re-organization also
becomes a preliminary step to the event reconstruction, performed by a
FORTRAN program driven by a C++ main. This configuration makes simpler
the data treatment and the connection to the database, which is performed
by the C++ application, and, more important, it will allow to set up C++
classes for data analysis.