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Component |
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Technology |
Performance |
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| Vertex Detectors (layer 1) | 1.2 | -2.5 | 2.5 | CCD | 4.5u+5.5 u /psin3/2 | ||||||||||||||||
| Vertex Detectors (layer 2-5) | 2.4, 3.6, 4.8, 6 | -12.5 | 12.5 | CCD | 4.5u+5.5 u /psin3/2 | ||||||||||||||||
| Central Tracking | 21
46 71 96 121 122 |
-126 -126 -126 -126 -126 -126 |
126
126 126 126 126 126 |
Si strips | (delta)/P2~6x10-5 high p
(delta)P/P~0.4% low p |
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| Forward Tracking | 20
20 20 |
125
125 125 |
+/-136
+/- 159 +/- 182 |
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Si discs | (delta)/P2~6x10-5 high p
(delta)P/P~0.4% low p |
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Tungsten/Si pads | (delta)E/E~ 12%/(root) E +1% | |||||||||||||||
| Coil Magnet | 129 | 158 | -178 | 178 | SC Solenoid ~1/2 (lambda) thick |
6 Tesla | |||||||||||||||
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Cu/Scintillator | (delta)E/E~50%/(root)E +2% | |||||||||||||||
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Fe/gas | ||||||||||||||||
| Luminosity Monitor | 6 | 15 | 151 | 176 | Tungsten/Si | ||||||||||||||||
5 layers of CCD's 0.12 -- per xo layer
radii of layer 1 1.2cm, 5 cm long
2 2.4cm, 25 cm long
3 3.6cm, 25 cm long
4 4.8cm, 25 cm long
5 6.0cm, 25 cm long
CCD's 20 u x 20u pixels
point error ~ 5u
Silicon u strips
Layer 1 21
2 46
3 71
4 96
5 121
6 122
Tungsten/Silicon pad readout
Tungsten xo = 0.35cm, (lambda) =9.6cm
Structure:
50 layers: 2 mm Tungsten
total thickness 25cm
100 mm of Tungsten/3.5mm = 29 xo total,~ 1(lambda)
segmentation 1.5 cm x 1.5 cm pads
1.5 mrad x 15 mrad
50 longitudinal layers
Copper/Scintillator towers
Cu (lambda) =14.8cm
Copper
38 layers of: 20mm Copper
5mm Scintillator
total thickness 95 cm = 5.1 lambda
EM + Had Calorimter 6.1 lambda
Segmentation of HCal
Transverse 40 mrad x 40 mrad
Longitudinal - 3 segments
Muon detectors - 32 Iron plates, 5 cm thick each
5 cm thick Fe plates with gas chambers inside in 1.5 cm gaps.
Continuous pad structure of hadron calorimeter for tailcatcher.
Position resolution
10 layers - 1 cm in theta direction
2 layers - 1 cm in Z direction
Last Modified: 01/13/04 12:57