BOLOGNA Scanning Lab

INFN - Sezione di BOLOGNA

Physics Dep. of Alma Mater Studiorum Università di Bologna

M.Pozzato – Ankara – 09/04/02

ESSLab 2

ESSLab 1

corr

idor

Bologna scanning

LAB

MIC2RACK

MIC1100x

MIC3 Automatic Scanning for NTD E

MU

Sto

rag

e

MIC4

PCMIC5

PCRACK

Name Position

Brunetti Giulia PhD student

Di Ferdinando Donato INFN Research Associate

Giacomelli Giorgio Emeritus Professor

Giorgini Miriam Research Associate

Mandrioli Gianni INFN Senior Research Associate

Mauri Nicoletta PhD student (INFN Research Fellow)

Medinaceli Eduardo Research Fellow

Patrizii Laura INFN Senior Research Associate

Pozzato Michele PhD student

Sioli Maximiliano Assistant Professor

Sirri Gabriele INFN Research Associate

Tenti Matteo PhD student

Name Division

Calligola Patrizia Computing and network

Degli Esposti Luigi Electronics

Togo Vincent General Technical Service

Valieri Claudia General Technical Service

Bologna INFN technical supportBologna Group

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.

Bologna Event Summary

  Tot n.g. glued

Received 58 (*) 42 16

Scanned 57 41 16

Connected 51 38 14

Localized 38 30 8 

(*) Received bricks are 59 but one is not taken here into account  see slide 8.

        Pending   Scanning   Analysis   Manual Check Closed  

  Tot CC NC Tot CC NC Tot CC NC Tot CC NC Tot CC NC Tot CC NC

Received 58(*) 48 10 5 3 2 10 9 1 7 7 0 1 1 0 35 28 7

Scanned 57 47 10 5 3 2 9 8 1 7 7 0 1 1 0 35 28 7

Connected 52 44 8 2 2 0 7 6 1 7 7 0 1 1 0 35 28 7

Localized 38 31 7 1 1 0 0 0 0 2 2 0 0 0 0 35 28 7

 

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.

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

- : 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)

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

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)

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

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

Event: 234530331 Brick: 1076773 (CC)TT muon slopes:

KALMAN: -0,0423663 0,301024LINEAR: -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

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 tracksent at LNGS:  Not found. 

Requested new check taking into account the offset found in the unique prediction matched in the brick.

Connected and localized(31 CC, 7 NC)

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 SY4 68878.8 77806.7 0.3353 -0.075

7 82641 47821 0.2256 -0.014910 67584 58476 -.0141 .07911 51930 62576 -.164 -.1172

Match found on pl56

ID 7:DX: -156 µm DY: 8 µmDTX: -7 mrad DTY: 17 mrad

ID 10:DX: 54 µm DY: -89 µmDTX: 4 mrad DTY: -5 mrad

ID 11:DX: 172 µm DY: -197 µmDTX: -2 mrad DTY: 12 mrad

(*) not flagged as muon in Analysis Follower

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)

Event 235074327 Brick 1142125 (CC)

TT muon slopes:KALMAN: -0,170876 0,2367460LINEAR: -0,1885243 0,2256981

2 CS doublets Prediction (not the muon)

ID X Y SX SY2 56297.6 86822 -.1549 .04624 59560.1 78467.2 -.096 -.3174

Match found on pl56 (pl57 distorted)

ID 2:DX: 56 µm DY: -317 µmDTX: 9 mrad DTY: 18 mrad

ID 4:DX: 2 µm DY: -212 µmDTX: 9 mrad DTY: 18 mrad

Scanback done path 2: stop pl 43Path 4: stop pl 56

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

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

Overall picture

Z Z

yX

- : 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)

- : TX = 0.001   TY = 0.0982 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