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
Davide Caffarri – Andrea Dainese INFN Padova.
Padova,
09/11/09
CERN,
07/12/09
Corso di dottorato XXIV ciclo
Davide Caffarri
First Physics Meeting
Mean vtx VS tstamp
Run 104030 (the first one) seems to have different mean for x and z but…
Padova,
09/11/09
CERN,
07/12/09
Corso
di dottorato
XXIV ciclo
Davide Caffarri
First
Physics
Meeting
Davide Caffarri
– Andrea Dainese 1
Run 104030
Low number of entries and constraining the fit:
Mean -1.08 cm
RMS 8.20 cm
Padova,
09/11/09
CERN,
07/12/09
Mean -3.46 cm
Sigma 3.44 cm
Corso
di dottorato
XXIV ciclo
Davide Caffarri
First
Physics
Meeting
Davide Caffarri
– Andrea Dainese 2
SPD vertex
X: mean - 724 µm
sigma 474 µm
Padova,
09/11/09
CERN,
07/12/09
Y: mean + 0.16 cm
sigma 500 µm
Z: mean - 3.2 cm
sigma 3.7 cm
Corso
di dottorato
XXIV ciclo
Davide Caffarri
First
Physics
Meeting
Davide Caffarri
– Andrea Dainese 3
Tracks vertex
X: mean - 740 µm
sigma 312 µm
Padova,
09/11/09
CERN,
07/12/09
Y: mean + 0.16 cm
sigma 332 µm
Z: mean - 3.2 cm
sigma 3.5 cm
Corso
di dottorato
XXIV ciclo
Davide Caffarri
First
Physics
Meeting
Davide Caffarri
– Andrea Dainese 4
TPC vertex
X: mean - 0.11 cm
sigma 0.39 cm
Padova,
09/11/09
CERN,
07/12/09
Y: mean - 0.04 cm
sigma 0.38 cm
Z: mean - 3.9 cm
sigma 3.6 cm
Corso
di dottorato
XXIV ciclo
Davide Caffarri
First
Physics
Meeting
Davide Caffarri
– Andrea Dainese 5
Tracks VS SPD vertex
Padova,
09/11/09
CERN,
07/12/09
Corso
di dottorato
XXIV ciclo
Davide Caffarri
First
Physics
Meeting
Davide Caffarri
– Andrea Dainese 6
TPC VS SPD vertex
Padova,
09/11/09
CERN,
07/12/09
Corso
di dottorato
XXIV ciclo
Davide Caffarri
First
Physics
Meeting
Davide Caffarri
– Andrea Dainese 7
Contributors
SPD multiplicity
ITS tracks with nclust>4
TPC track
with
TPCNclus
tracks > 0
pointing at the beam
pipe
Padova,
09/11/09
CERN,
07/12/09
Corso
di dottorato
XXIV ciclo
Davide Caffarri
First
Physics
Meeting
Davide Caffarri
– Andrea Dainese 8
Vertex mean VS multiplicity
Padova,
09/11/09
CERN,
07/12/09
Corso
di dottorato
XXIV ciclo
Davide Caffarri
First
Physics
Meeting
Davide Caffarri
– Andrea Dainese 9
Vertex RMS VS multiplicity
Padova,
09/11/09
CERN,
07/12/09
Corso
di dottorato
XXIV ciclo
Davide Caffarri
First
Physics
Meeting
Davide Caffarri
– Andrea Dainese 10
Vertex efficiency VS multiplicity
Black: Z vertex
Red: 3D vertex
Padova,
09/11/09
CERN,
07/12/09
Corso
di dottorato
XXIV ciclo
Davide Caffarri
First
Physics
Meeting
Davide Caffarri
– Andrea Dainese 11
Beam spot: Data and MC (I)
DATA
Padova,
09/11/09
CERN,
07/12/09
LHC09d7
Corso
di dottorato
XXIV ciclo
Davide Caffarri
First
Physics
Meeting
Davide Caffarri
– Andrea Dainese 12
Beam spot: Data and MC (II)
DATA
Padova,
09/11/09
CERN,
07/12/09
LHC09d7
Corso
di dottorato
XXIV ciclo
Davide Caffarri
First
Physics
Meeting
Davide Caffarri
– Andrea Dainese 13
Runs 104157 104160
(all detectors)
DINT1B 0BPA 0BPC l0fINT1
DINT1C 0BPC *0BPA l0fINT1
DINT1A 0BPA *0BPC l0fINT1
DBEAMB 0BPA 0BPC
Padova,
09/11/09
CERN,
07/12/09
Corso
di dottorato
XXIV ciclo
Davide Caffarri
First
Physics
Meeting
Davide Caffarri
– Andrea Dainese 14
Vertex mean VS tstamp
Padova,
09/11/09
CERN,
07/12/09
Corso
di dottorato
XXIV ciclo
Davide Caffarri
First
Physics
Meeting
Davide Caffarri
– Andrea Dainese 15
SPD vertex
X: Mean -780µm
Sigma 460µm
Padova,
09/11/09
CERN,
07/12/09
Y: Mean +0.16 cm
Sigma 480 µm
Z: Mean -3.3 cm
Sigma 3.85 cm
Corso
di dottorato
XXIV ciclo
Davide Caffarri
First
Physics
Meeting
Davide Caffarri
– Andrea Dainese 16