Transcript FMD -T0 layout absorber side

FMD simulation status
Alexei Kurepin, Alla
Maevskaia
INR RAS, Moscow
11 March 2003
FMD meeting
• FMD & T0 support structure now in AliRoot
• New background contributions
• Comparison generated and reconstructed dN/dh
.• Reconstruction accuracy for events with different
multiplicity
11 March 2003
Alla Maevskaia INR Moscow
2
FMD -T0 layout absorber side
11 March 2003
Alla Maevskaia INR Moscow
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FMD -T0 layout central part
11 March 2003
Alla Maevskaia INR Moscow
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FMD -T0 layout left side
11 March 2003
Alla Maevskaia INR Moscow
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Primary/total ratio
for central (black error bars) and peripheral(red error bars) events
for Si1 inner & outer, Si2 inner & outer and Si3
11 March 2003
Alla Maevskaia INR Moscow
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Contributions to background from different detectors
R
Total
cm
Si1 inner
5
67.8
Primary
Primary
/total
25.5
0.38
Pipe
Pipe/ ITS
total
ITS/
total
Abs
Abs/
total
T0
35.8
0.53
2.29/
6.22
2.74/
10.88
2.8/
10
0.03
0.46
0.01
0.03
0
0.14
0.16
0.01
0.07
0
0.24
0.19
0.02
0.04
0
1.15/
5
1.86/
4.86
1.34/
3.5
0.15
0.65
0.09
0.04
0.01
0.34
0.37
0.07
0
0
0.33
0.25
0.06
0.01
0
10
19.2
11.4
0.59
4.1
0.21
15
11.7
6
0.51
1.75
0.15
3.53
0.47
1.17
0.16
Si1 outer
15
7.55
T0
/total
10
5.4
1.75
0.32
0.48
0.09
20
4.
1.64
0.41
0.57
0.14
24
9.42
5.21
0.65
0.6
0.6
6.5
2.2
0.75
0.18
0.14
0.09
4.5
3.06
2.3
0.12
0.2
0.27
0.03
0.02
0.05
0
0
0.01
0
0
0
0
0
0
12.8
0.49
11
0.42
1.78/
4.63
1.98/
5.69
1.42/
4.27
0.07
0.03
0
0
0
0.16
0.09
0.01
0
0
0.21
0.08
0.01
0
0
Si2 inner
5
36.9
10
15.6
15
8.65
Si3
5
26.3
10
12.7
5.9
0.46
4.3
0.34
15
6.62
2.63
0.4
1.92
0.29
11 March 2003
Alla Maevskaia INR Moscow
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Primary +background from ITS with and without
ITS cables
11 March 2003
Alla Maevskaia INR Moscow
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Reconstructed and generated multiplicity in ITS &
FMD h coverage (from Enrico Scomparin)
11 March 2003
Alla Maevskaia INR Moscow
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Generated ad reconstructed dN/dh distribution
for 100 HIJINGpara events dN/dh =6000
11 March 2003
Alla Maevskaia INR Moscow
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Reconstructed multiplicity as a function of the generated one.
11 March 2003
Alla Maevskaia INR Moscow
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To be done for TDR:
• Detector response
• Proton-proton collisions background correction
• Multiplicity analysis for UPS events
11 March 2003
Alla Maevskaia INR Moscow
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