1. Brick Finding Package – Status Report A. Chukanov, S. Dmitrievsky, Yu. Gornushkin Joint Institute for Nuclear Research, Dubna LNGS 11 th October, 2006

2. Outline Package description Results Graphical User Interface Roadmap Conclusion

3. Program Algorithm

4. Cleaning Event Cellular Automation

5. Reconstruction muon track direction Hough Transform Kalman Filter (from OpRec package) Tracing Method

6. Reconstruction Hadron Jet direction Reweighting hits method

7. Define wall with interaction Neural Network

8. Find Brick Define most probable brick

9. Results (   CC events) “1 of 3” Full detector Wall reconstruction efficiency: 1 wall 0.940.85 Brick finding efficiency 1 brick0.710.70 2 bricks0.870.85 3 bricks0.910.92

10. GUI - Event Viewer

13. Execute event Zoom buttons Navigation buttons Open Data files and Save Picture Show hits before and after selection Drawing directions of Muon track And/Or Hadron Jet Show particles or deposited energy Muon track reconstruction algorithm Interactions type Brick finding options Program Development Button

16. Development Online Event Viewer develop the online data conversion to OPERA Root files Map of inserted bricks BMS people Other BF algorithms can be added to our program

17. Conclusion Developed BF program (91% efficiency) Event Viewer is ready for online analysis We are ready to put the BF package to OPERA CVS repository We can implement all your suggestions