Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only)...
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Transcript of Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only)...
![Page 1: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/1.jpg)
Primary Vertex Reconstruction:results on first collisions data
Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors)
Trigger configuration: DSMBC 0SMB 0BPC DSMBB 0SMB 0BPA 0BPC DSMBA 0SMB 0BPA
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting
Davide Caffarri – Andrea Dainese INFN Padova.
![Page 2: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/2.jpg)
Mean vtx VS tstamp
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting Davide Caffarri – Andrea Dainese 1
Run 104030 (the first one) seems to have different mean for x and z but…
![Page 3: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/3.jpg)
Run 104030
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting Davide Caffarri – Andrea Dainese 2
Low number of entries and constraining the fit:
Mean -1.08 cm Mean -3.46 cmRMS 8.20 cm Sigma 3.44 cm
![Page 4: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/4.jpg)
SPD vertex
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting Davide Caffarri – Andrea Dainese 3
X: mean - 724 µm sigma 474 µm
Z: mean - 3.2 cm sigma 3.7 cm
Y: mean + 0.16 cm sigma 500 µm
![Page 5: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/5.jpg)
Tracks vertex
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting Davide Caffarri – Andrea Dainese 4
X: mean - 740 µm sigma 312 µm
Z: mean - 3.2 cm sigma 3.5 cm
Y: mean + 0.16 cm sigma 332 µm
![Page 6: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/6.jpg)
TPC vertex
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting Davide Caffarri – Andrea Dainese 5
X: mean - 0.11 cm sigma 0.39 cm
Z: mean - 3.9 cm sigma 3.6 cm
Y: mean - 0.04 cm sigma 0.38 cm
![Page 7: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/7.jpg)
Tracks VS SPD vertex
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting Davide Caffarri – Andrea Dainese 6
![Page 8: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/8.jpg)
TPC VS SPD vertex
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting Davide Caffarri – Andrea Dainese 7
![Page 9: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/9.jpg)
Contributors
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting Davide Caffarri – Andrea Dainese 8
SPD multiplicity ITS tracks with nclust>4
TPC tracksTPC track with Nclus > 0 pointing at the beam pipe
![Page 10: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/10.jpg)
Vertex mean VS multiplicity
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting Davide Caffarri – Andrea Dainese 9
![Page 11: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/11.jpg)
Vertex RMS VS multiplicity
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting Davide Caffarri – Andrea Dainese 10
![Page 12: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/12.jpg)
Vertex efficiency VS multiplicity
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting Davide Caffarri – Andrea Dainese 11
Black: Z vertexRed: 3D vertex
![Page 13: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/13.jpg)
Beam spot: Data and MC (I)
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting Davide Caffarri – Andrea Dainese 12
DATA LHC09d7
![Page 14: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/14.jpg)
Beam spot: Data and MC (II)
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting Davide Caffarri – Andrea Dainese 13
DATA LHC09d7
![Page 15: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/15.jpg)
Runs 104157 104160 (all detectors)
DINT1B 0BPA 0BPC l0fINT1DINT1C 0BPC *0BPA l0fINT1DINT1A 0BPA *0BPC l0fINT1
DBEAMB 0BPA 0BPC
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting Davide Caffarri – Andrea Dainese 14
![Page 16: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/16.jpg)
Vertex mean VS tstamp
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting Davide Caffarri – Andrea Dainese 15
![Page 17: Primary Vertex Reconstruction: results on first collisions data Runs: 104030, 104044 (ITS only) 104065, 104070 (all detectors) Trigger configuration: DSMBC.](https://reader036.fdocuments.in/reader036/viewer/2022062619/55161987550346cf6f8b65f7/html5/thumbnails/17.jpg)
SPD vertex
Padova, 09/11/09 Corso di dottorato XXIV ciclo Davide CaffarriCERN, 07/12/09 First Physics Meeting Davide Caffarri – Andrea Dainese 16
X: Mean -780µm Sigma 460µm
Y: Mean +0.16 cm Sigma 480 µm
Z: Mean -3.3 cm Sigma 3.85 cm