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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.
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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…
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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