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There are also three forward disks at small angles composed of double-sided pixel sensor modules to measure coordinates in two views. The table below shows the radial extent of the disks and the inner |z| position positions for the "A" and "B" sensor planes.
Layer | Inner Radius | Outer Radius | |z| for A Plane |z| for B Plane |
|---|---|---|---|
1 | 2.78cm | 16.67cm | 20.40 20.80cm |
2 | 7.51cm | 16.67cm | 53.85cm 54.25cm |
3 | 11.65cm | 16.67cm | 82.95cm 83.35cm |
Each A Plane sensor plane has the following material thicknesses:
Material | Layer 1 | Layer 2 | Layer 3 | Thickness |
|---|---|---|---|---|
Silicon (active) | 0.03cm 0.03cm 002cm | |||
Silicon (dead) | 0.03cm 028cm cm | |||
Silicon Carbon Fiber (dead25%) | 0.00048cm | 0.00048cm | 0.00048cm | |
Kapton | 0.0038cm | 0.0038cm | 0.0038cm | |
Copper | 0.00038cm | 0.00038cm | 0.00038cm | |
PEEK | 0.02cm | 0.02cm | 0.02cm | |
Rohacell31 (50% coverage) | 0.3cm | 0.3cm | 0.3cm | |
Epoxy | 0.0175cm | 0.0175cm | 0.0175cm | |
Carbon Fiber | 0.016cm | 0.016cm | 0.016cm |
Each B Plane has the following material thicknesses:
Material | Layer 1 | Layer 2 | Layer 3 |
|---|---|---|---|
Silicon (active) | 0.03cm | 0.03cm | 0.03cm |
Silicon (dead) | 0.00048cm | 0.00048cm | 0.00048cm |
Kapton | 0.0038cm | 0.0038cm | 0.0038cm |
Copper | 0.00038cm | 0.00038cm | 0.00038cm |
The forward disk supports are disks made of two 0.05cm thick Carbon Fiber planes separated by a 0.35cm thick layer of Rohacell31 (15% coverage). The radial span and inner z coordinate are:
Layer | Inner Radius | Outer Radius | Inner |z| |
|---|---|---|---|
1 | 2.68cm | 16.87cm | 21.18cm |
2 | 7.41cm | 16.87cm | 54.37cm |
3 | 11.55cm | 16.87cm | 83.48cm 026cm |
Calorimeters:
Electromagnetic Calorimeter:
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