1. BOLOGNA Scanning Lab INFN - Sezione di BOLOGNA Physics Dep. of Alma Mater Studiorum Università di Bologna M.Pozzato – Ankara – 09/04/02

2. ESS Lab 2 ESS Lab 1 corridor Bologna scanning LAB MIC2 RACK MIC1 100x MIC3 Automatic Scanning for NTD EMU Storage MIC4 PC MIC5 PC RACK

3. NamePosition Brunetti GiuliaPhD student Di Ferdinando DonatoINFN Research Associate Giacomelli GiorgioEmeritus Professor Giorgini MiriamResearch Associate Mandrioli GianniINFN Senior Research Associate Mauri NicolettaPhD student (INFN Research Fellow) Medinaceli EduardoResearch Fellow Patrizii LauraINFN Senior Research Associate Pozzato MichelePhD student Sioli MaximilianoAssistant Professor Sirri GabrieleINFN Research Associate Tenti MatteoPhD student NameDivision Calligola PatriziaComputing and network Degli Esposti LuigiElectronics Togo VincentGeneral Technical Service Valieri ClaudiaGeneral Technical Service Bologna INFN technical support Bologna Group

4. Infrastructure status HARDWARE: MIC1: high magnification obj (100x) MIC2, MIC3: currently working for scanning of OPERA events MIC4: currently working for scanning of glued emulsions MIC5: devoted to plate changer tuning (not glued emulsions) and for manual check SOFTWARE: - Computing infrastructure upgraded not to the the last release - All data taking with ScanGrid now (3 servers currently installed and working) -Local DB scheme upgraded to last one.

6. Bologna Event Summary Totn.g.glued Received58 (*) 4216 Scanned574116 Connected513814 Localized38308 (*) Received bricks are 59 but one is not taken here into account  see slide 8. Pending Scanning Analysis Manual CheckClosed TotCCNCTotCCNCTotCCNCTotCCNCTotCCNCTotCCNC Received58 (*) 4810532 9177011035287 Scanned57471053298177011035287 Connected5244822076177011035287 Localized3831711000022000035287

8. Event: 221948297 Brick: 1056705 TT muon slopes: KALMAN: -0,123509 -0,280414 LINEAR: -0,1188975 -0,2695353 1 CS Prediction (not the muon) Prediction matched on plate 57 and scanback done  Passing through track TS done to look for muon candidate The track is not related to the CC event but to a rock muon  this brick should not be extracted.

9. Not connected (3CC without muon pred – 2 NC)

10.  - : TX = -0.203 TY = 0.267 6 predictions received from LNGS (2 tracks seem duplicated-tracks), not the muon and not converging Not matched  From the electronic the bricks seems the right one  rescan requested. Event: 227267569 Brick: 1048764 (CC)

11. Event 234247939 Brick 1078625 (CC) TT muon slopes: KALMAN: 0,332127 0,289077 LINEAR: 0,3191448 0,2544773 9 predictions from LNGS  None matched!!! Maybe coming from a shower? However we try to find the muon performing a TS around the point of convergence (IP ~ mm) from PL38 to PL42.  Muon candidate found passing through the volume: TX 0.305 TY 0.234 SCANBACK STARTED

12. 7 predictions received from LNGS  spreaded on the “whole” surface. Matched 4 predictions: all stops in the plate of the match  ¾ search asked. Event: 233278313 Brick: 1150383 (NC)

13. Event: 226287711 Brick: 1013835 (NC) One prediction received from LNGS  not found. ¾ search requested and done. Previous track discarded by compton map  2 more candidates found  not matched in plate 57 – 56 – 55 – 54 Requested CS rescan

14. Connected not located ( 5 CC with  pred, 8 CC without  pred, 1 NC )

15. Event: 234530331 Brick: 1076773 (CC) TT muon slopes: KALMAN: -0,0423663 0,301024 LINEAR: -0,03907093 0,3191458 15 CS doublets Prediction (with muon) Matched 10 (included the muon)  candidate The muon candidate: manual check on all the segments to be done. Volume analysis around the other stopping points to be done before requesting a new brick estraction. SB done: muon candidate exits laterally

16. Event: 219015457 Brick: 1084486  - : TX = 0.052 TY = -0.003 5 predictions from LNGS: 2 seem to converge First attempt: one track matched  scanback started, stop PL 57. GeneralScan 3 plates (57-55)  Mu candidate found (in the display below is the black track) Stop: pl 46  TS done track isolated, shower hint. Muon candidate seen as stop track sent at LNGS: Not found. Requested new check taking into account the offset found in the unique prediction matched in the brick.

17. Connected and localized ( 31 CC, 7 NC )

18. Event 23579103 Brick 1056199 (CC) TT muon slopes: KALMAN: -0,0304347 0,0333243 LINEAR: -0,03206202 0,03427832 4 CS doublets Prediction path 10 is the muon( * ) ID X Y SX SY 4 68878.8 77806.7 0.3353 -0.075 7 82641 47821 0.2256 -0.0149 10 67584 58476 -.0141.079 11 51930 62576 -.164 -.1172 Match found on pl56 ID 7: DX: -156 µm DY: 8 µm DTX: -7 mrad DTY: 17 mrad ID 10: DX: 54 µm DY: -89 µm DTX: 4 mrad DTY: -5 mrad ID 11: DX: 172 µm DY: -197 µm DTX: -2 mrad DTY: 12 mrad ( * ) not flagged as muon in Analysis Follower

19. Scanback Path 10: passing through Path 11: passing through Path 7: stopPL53 TotalScan done around stopping point: track confirmed as stop: no other tracks attached. Vertexing done with path 10 – path 11: DZ = -2.4 cm (interaction in TT) IP ~ 20 m (using segments on pl1)

20. Event 235074327 Brick 1142125 (CC) TT muon slopes: KALMAN: -0,170876 0,2367460 LINEAR: -0,1885243 0,2256981 2 CS doublets Prediction (not the muon) ID X Y SX SY 2 56297.6 86822 -.1549.0462 4 59560.1 78467.2 -.096 -.3174 Match found on pl56 (pl57 distorted) ID 2: DX: 56 µm DY: -317 µm DTX: 9 mrad DTY: 18 mrad ID 4: DX: 2 µm DY: -212 µm DTX: 9 mrad DTY: 18 mrad Scanback done  path 2: stop pl 43 Path 4: stop pl 56

21. TotalScan Scanback Track Vertex position: (59651.1, 85333.4, -18615.7) Vertex prob: 0.953933 Tracks statistics: Id Impact TX TY Nseg DZ 13762 1.7 0.042 -0.295 5 -421 10018 2.2 -0.123 0.035 5 -421 3861 9.0 0.0318632 0.0109943 4 ??? Parent found!! Scanback done on parent  Stop PL: 18  TOTAL SCAN

22. TotalScan Muon Vertex position: (58594.1 84507.2 -51138.1 ) Vertex prob: 0.953933 Tracks statistics: Id Impact TX TY Nseg DZ muon 3.8 -0.1402 0.2126 4 -349.4 SB 0.1 0.0277 0.0178 8 -349.4 Event localized Scanforth done: muon candidate sent to LNGS to CS confirmation

23. Overall picture Z Z yX

24.  - : TX = -0.090 TY = 0.047 (from OpBrickFinder) Reco Published in Analysis Follower: TX = -0.125 TY = 0.083 3 predictions from LNGS (none flagged as muon in Analysis) Path5_cs2: TX = -.1169 TY =.022 (Is the muon candidate?) This track has been matched inside the brick, followed up to plate 42: TS done: scanback track not reconstructed  TS started again. Event: 226136067 Brick: 1138484 (CC)

25.  - : TX = 0.001 TY = 0.098 2 predictions received from LNGS both flagged as muon candidates and both matched. SB done  one passing through, the other stops on plate 26  TS done on stopping point confirm an isolated track (compatible with a QE – event as seems by electronic detector) Event: 233479197 Brick: 1135429 (CC) Passing through track related to another event 