1. Bologna Report M. Pozzato on behalf of Bologna Group Cetara Meeting – 13/09/2010

2. Summary Lab status Lab status Scanning Plan Scanning Plan Quality of CS predictions Quality of CS predictions Vertex Location + Decay Search Vertex Location + Decay Search 2 13/09/2010

3. Lab Status Software (Cuba Libre Edition): Software (Cuba Libre Edition):  SySal.NET 2.6_20100712  SySal.NET 2.6_20100712  SySal-ScanGrid 2.6_20100712  SySal-ScanGrid 2.6_20100712  SySal2000 2.6_20100712  SySal2000 2.6_20100712 Scanning resources used up to now: Scanning resources used up to now: - 1 Standard ESS equipped with Plate Changer (glued setup); - 1 Standard ESS equipped with Plate Changer (glued setup); - 2 Standard ESS - 2 Standard ESS Not available for scanning (R&D in progress): Not available for scanning (R&D in progress): - 1 Standard ESS equipped with Plate Changer (not-glued setup); - 1 Standard ESS equipped with Plate Changer (not-glued setup); - 1 Custom ESS equipped with 100x - 1 Custom ESS equipped with 100x Human resources: slightly affected by shifts at LNGS and vacation. 3 13/09/2010

4. Bologna Scanning Plan HW: The R&D on “not-glued setup” is coming to a successfully conclusion and the microscope is operative. One more plate changer is being installed and will be available within a few weeks. The custom ESS has been equipped with a revolver to host both 100x and 40x objectives in order to be used for standard scanning Final scanning resources available : 2 ESS+PC (not glued) 1 ESS+PC (glued) 1 ESS 1 custom ESS with 100X and 40X SW: Scan-back supervised has been recently substituted by not-supervised track-follow. A lot of manual check is not necessary anymore. We will complete the R&D on on-line filtering of microtracks by the end of the year. We foresee the this could speed up our CS-to-brick connection. These improvements plus other minor changes and an improved organization will increase our scanning speed. Manpower (devoted to scanning, development and scanning station): 4 physicists at least (staff, postdoc, Phd Student), 2 technicians for scanning, 1 technician for full-time PlateChanger supporting, 1 technician for computing, For 2011 we foresee to complete at least 8-10 bricks/week. for 2011 4 13/09/2010

5. Quality of CS Predictions 2008 : CC: ~80%  ~70% with muon  ~59% convergence pattern  ~30% no muon  ~65% convergence pattern NC: ~20%  ~77% convergence pattern 2009 : CC: ~77%  ~84% with muon  ~47% convergence pattern  ~16% no muon  ~100% convergence pattern NC: ~23%  ~65% convergence pattern convergence pattern defined as: - at least 2 tracks converging inside the brick - IP <1000 (showers are included….not all converging patterns lead to primary vertex) Info downloaded from OPITA (includes also NOT delivered bricks) 5 13/09/2010

6. Event 9218117517 – brick 1069660 6 13/09/2010 4 predictions delivered by LNGS, only one track connected BUT vetoed. Very Poor Hits Filtered data: - - 4 empty walls - Dubna Algorithm cannot find the wall.

7. Event 9155010575 – brick 1131371 13/09/2010 7 Muon passing….seems to be passing also by eledet

8. Vertex Location & Decay Search 13/09/2010 8 RUN2008 ALL CC NC Received 76 61 15 Scanning 76 61 15 Connected 70 57 13 Loc_DM_PT 59 49 10 --------------------------------- Localized 53 44 9 Dead Material 5 4 1 PT 1 1 0 BrickDump: 9 DECAY SEARCH: 40 CC +9 NC

9. Run 2009 RUN 2009 ALL CC NC Received 138 105 33 Scanning 131 102 29 Connected 119 95 24 Completed 85 70 15 ----------------------------------- Localized 78 63 15 Dead Material 1 1 0 PT 6 6 0 9 13/09/2010 Total Scan done. Vertex to be confirmed ~12 Wait LNGS interaction: 9 Scanned but need further analysis: ~10 Brick-Dump (Fog > 15) : 4 Tentative connection done before dumping… 1 brick out of 5 localized DECAY SEARCH: 18 CC + 1 NC

10. Slope 2008 Run 13/09/2010 10

11. Slope Run 2009 13/09/2010 11

12. Multiplicity 13/09/2010 12

13. 13/09/2010 13

14. Backup- old 13/09/2010 14

15. X Y Z X Brick 1140875, charm candidate Interesting events from 2008 decay search

16. idIPidIP µ0.134.9 20.144.9 µ 23.420.4 4 23.430.4 µ 16.9 3 3 4 2 µ µ 4 3 2 id IPIP_D µ 29.246.3 2 8.844.3 3 20.666.7 idIPIP_D 21.32.6 34.49.0 45.610.2 4 3 µ µ 101931.3 46165.3 -0.0477 0.0638 47 3 101955.4 46147.9 -0.0861 0.0208 47 2 102038.8 46184.0 0.0611 0.0829 47 4 102251.3 45928.5 0.1243 -0.1165 48 2 16 13/09/2010

17. id IPidIP µ 0.1 3 4.9 2 0.1 4 4.9 primary = (101937.771,46129.463,-13987.791) secondary = (101965.137,46167.591,-13554.378) 2 3 µ 4 ΔZ = 433.41 µm flight lenght = 435.98 µm φ = 73.5 ° SX = -0.0613 SY = -0.0879 low momentum track, P = 0.33; 0.22; 0.64; 0.90 gamma ΔZΔZ Z X Hypothesis 1 4 474849 41 200 444 4 100 17 13/09/2010

18. 4 102248.1 45929.0 0.1288 -0.1270 48 41 102246.0 45929.0 0.1243 -0.1225 48 102075.35 46091.3 0.1267 -0.1248 47 5 103123.4 44537.0 1.5552 -2.0132 47 idIPD_IP 28.156.1 128.156.1 id IPD_IP 39.418.8 9.418.8 idIPD_IP 21.12.2 1.12.2 idIPD_IP 8.926.8 310.320.2 23.85.8 41 idIPD_IP 122.745.4 522.745.4 Vertice tra le tracce 4 - 41 Vtx (102165.0, 45985.7, -11934.2) (pl 47.8, ~ bottom 48) IP = 0.7 Vtx2 (101963.6,46171.9,-13496.0) Vtx1(101909.6,46120.1,-13766.1) ΔZ=270.1 µm 4 48 47 1 5 3 2 vtx2 46 vtx1 ΔZΔZ 41 SX = -0.199926 SY = -0.191781 Fligth Length = 280.273 µm φ = 58.9° 18 13/09/2010

19. 19 13/09/2010

20. Plate Changer 1 – plate changer (glued emu) 1 – plate changer (not glued emu) Equiped with bigger suction cap Emulsions are easily detached from the stage Space allocated for one more plate changer: will be set-up in August by Luigi Modified air compressed circuit to give higher pressure to detach emulsions  broken two oil-filters  some pressure reductors not installed yet. 20 13/09/2010

21. Charm Event From Naples Fog: 6  7 Fog: 6  7 Predictions: 28 predictions Predictions: 28 predictions Matched: 16  SB Matched: 16  SB Time for Location: 1 day (SB + TS) Time for Location: 1 day (SB + TS) PRELIMINARY 21 13/09/2010

22. Eledet Display 22 13/09/2010

23. ID TX TY IP 1 0.112 0.173 12.9 2 -0.349 0.170 13.6 3 0.146 0.624 8.9 4 0.092 0.136 9.8 5 -0.082 -0.308 3.0 6 -0.214 0.194 3.7 7 -0.007 0.012 0.7 8 0.463 0.401 9.6 9 0.077 -0.066 5.8 10 -0.184 0.287 3.6 11 -0.028 0.074 8.5 ID TX TY IP 2 -0.349 0.170 10.6 3 0.146 0.624 6.2 5 -0.082 -0.308 7.8 6 -0.214 0.194 2.3 7 -0.007 0.012 0.7 8 0.463 0.401 4.5 9 0.077 -0.066 2.7 10 -0.184 0.287 3.1 11 -0.028 0.074 4.1 ID TX TY IP (~130 um) 1 0.112 0.173 0.1 2 -0.349 0.170 0.1 Primary vertex: 73954.4, 6990.2, -37526.4 (between PL 28 and PL 29) 23 13/09/2010

24. Secondary vertex: 73954.4, 6990.2, -37526.4 (between PL 31 and PL 32) 1 parent (id 7 in the previous slide) 1 charged daughter (TX: 0.210, TY: 0.021) 4 gammas Manual measurement at 100x objective to estimate e+e- angular aperture and accurate pointing direction in progress… 24 13/09/2010