Example use of Java/ODBMS in GIOD for Event Reconstruction
Use Monte Carlo simulation to generate particle tracker and E.M. calorimeter information for ~1000s of Higgs decay events (using the Caltech Exemplar).
Create an Objectivity federated database containing “persistent” hits, tracks, and energy clusters for each of the events.
Explore various algorithms and strategies for track reconstruction and energy clustering.
Write reconstructed track and energy cluster objects into the database.
Use a Java applet which opens the database, extracts each event, and then displays the raw hits, energy deposits, and the reconstructed tracks, energy map and clusters.
Java clone of the Kalman filter track fitting is 80% complete … will make performance comparisons with the C++/Fortran version … perhaps the JIT compilers will work some magic ...