1. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 1 Scanning Report from Salerno Brick scanning overview Pending Events An Interesting Event Conclusions

2. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 2 Bricks Delivered Scanning Started Not Connected Located Pass/ Edge out DeadMaterial Doing/ Pending CC79751556212* NC13 17204** Total92882628216 Brick Scanning Summary More details in the next slides * Brick 58076 not connected ** Brick 45758 not connected

3. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 3 CC Events Muon on CSLocatedPass\Edge Dead Material Doing/PendingNot Started Yes53416231 No22130072 Black CS410021 Total795562124 NC Events NC EventLocatedPass\EdgeDoing/PendingNot Started At least one SB track 127230 Black CS10010 Total137240 Brick Scanning Summary Not started: 1 damaged brick, 1 black CS, 2 CS-brick connection in progress

4. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 4 Pending/Doing CC Events Type of studyNumber f bricks SB of candidate found2 Total Scan2 Dedicated scanning for candidate search5 (2 Black CS) Under study2* 3 / 4 requested1 Total12 * More details in next slides NC Events Type of studyNumber f bricks Dedicated scanning for candidate search1 ( Black CS) Total Scan OK, studying reconstruction1 3 / 4 requested2 Total4

5. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 5 Scanning Report from Salerno Some Problematic Events

6. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 6 Problematic Events – Brick 146712 Events 236738649 - Brick 146712 – Fog 8 grains/1000  m 3

7. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 7 Candidate found on CS : 5 (no Muon found ) Candidate connected : 4 XZ View ‘Fake’ SB stop – Path 6 Missing segments reconstructed in Total Scan (using microtracks!) Restart with another SB to check the track is a passing through Tracks possibly correlated to event. Total Scan performed, short tracks, checking reconstruction (wide angle + short tracks, high background) Problematic Events – Brick 146712

8. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 8 It seems that Path 6 crosses muon in upstream brick We are scanning a 2 cm 2 zone from plate 6 to plate 1 The scanning zone is chosen taking into account the predicted position of the muon. Problematic Events – Brick 146712

9. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 9 Problematic Events – Brick 94673 Events 238099347 - Brick 94673 – Fog 10 grains/1000  m 3

10. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 10 Problematic Events – Brick 94673 Candidate Found on CS : 20 (one of which is flagged as possible muon). Muon candidate is not found on PL 57-50 CS Muon candidate We started with a shower search

11. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 11 Problematic Events – Brick 94673 Hint for shower in the CS candidates Human-assisted TotalScan, plates 57  33: 1 cm 2 around shower axis, reconstruct every 10 plates, check for shower/vertex

12. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 12 Problematic Events – Brick 94673 Tilted XY EM activity Muon not found at vertex, but event looks like a high-energy one

13. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 13 Problematic Events – Brick 94673 Maybe secondary interaction found More study needed to restart muon search None of the tracks found can be the muon

14. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 14 Scanning Report from Salerno An Interesting Event

15. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 15 Interesting Events Events 227114419 Brick 142310 – Fog 10 grains/1000  m 3

16. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 16 Interesting Event – Brick 142310 Candidate Found on CS : 11 (no Muon found) We started with a shower search

17. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 17 Interesting Event – Brick 142310 Hint for shower in the CS candidates Human-assisted TotalScan, plates 57  44: 1 cm 2 around shower axis, reconstruct every 10 plates, check for shower/vertex

18. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 18 Interesting Event – Brick 142310 Tilted XY Muon found at primary vertex EM activity XZ View Muon CS Candidates

19. Regina Rescigno, Cristiano Bozza – Salerno Emulsion Group – Apr 2009 19 Conclusions Scanning restarted Training 1 more scanner (young student) Feedback/Publication restarting next week Salerno data will be the “crash test dummies” to test schema upgrades in Central DB Scanforth performed whenever applicable Momentum estimation with likelihood-based algorithm (see last Phys. Coord.) performed whenever applicable (also re-evaluating old momentum measurements) – waiting for soft muon dataset for fine tuning