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The estimated material thickness for modules, silicon, readout, and cables are averaged over the barrel and are given by:
Material L1 | Layer 1 | L2 Layer 2 | L3 Layer 3 | L4 Layer 4 | L5 Layer 5 |
|---|---|---|---|---|---|
PEEK | 0.02cm | 0.02cm | 0.02cm | 0.02cm | 0.02cm |
Rohacell31 | 0.14cm | 0.14cm | 0.14cm | 0.14cm | 0.14cm |
Epoxy | 0.0175cm | 0.0175cm | 0.0175cm | 0.0175cm | 0.0175cm |
Carbon Fiber | 0.016cm | 0.016cm | 0.016cm | 0.016cm | 0.016cm |
Silicon (active) | 0.03cm | 0.03cm | 0.03cm | 0.03cm | 0.03cm |
Silicon (dead) | 0.00048cm | 0.00048cm | 0.00048cm | 0.00048cm | 0.00048cm |
Kapton | 0.0038cm | 0.0051cm | 0.0064cm | 0.0078cm | 0.0091cm |
Copper | 0.00038cm | 0.00052cm | 0.00065cm | 0.00079cm | 0.00093cm |
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Layer | Inner Radius | |z| Extent |
|---|---|---|
1 | 20.6cm | 57.7cm |
2 | 45.6cm | 84.3cm |
3 | 70.6cm | 110.2cm |
4 | 95.6cm | 136.6cm |
5 | 120.6cm | 162.4cm |
Endcap:
The forward disks have two sensors per layer that are slightly displaced in |z|. The Each layer is composed of double-sided sensor modules to measure coordinates in two views. The table below shows the radial extant of the disks and the inner |z| position for the "A" and "B" sensor planes.
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Each A plane has the following thicknesses of material:
Material | Layer 1 | Layer 2 | Layer 3 | Layer 4 |
|---|---|---|---|---|
Silicon (active) | 0.03cm | 0.03cm | 0.03cm | 0.03cm |
Silicon (dead) | 0.00048cm | 0.00048cm | 0.00048cm | 0.00048cm |
Kapton | 0.0051cm | 0.0064cm | 0.0078cm | 0.0091cm |
Copper | 0.00052cm | 0.00065cm | 0.00079cm | 0.00093cm |
PEEK | 0.02cm | 0.02cm | 0.02cm | 0.02cm |
Rohacell31 | 0.14cm | 0.14cm | 0.14cm | 0.14cm |
Epoxy | 0.0175cm | 0.0175cm | 0.0175cm | 0.0175cm |
Carbon Fiber | 0.016cm | 0.016cm | 0.016cm | 0.016cm |
Each B plane has the following thicknesses of material:
Material | Layer 1 | Layer 2 | Layer 3 | Layer 4 |
|---|---|---|---|---|
Silicon (active) | 0.03cm | 0.03cm | 0.03cm | 0.03cm |
Silicon (dead) | 0.00048cm | 0.00048cm | 0.00048cm | 0.00048cm |
Kapton | 0.0051cm | 0.0064cm | 0.0078cm | 0.0091cm |
Copper | 0.00052cm | 0.00065cm | 0.00079cm | 0.00093cm |
where each layer is composed of double-sided sensor modules to measure coordinates in two views. The forward disk supports are composed of .039cm CarbonFiber, 1.2cm Rohacell31 and 0.039cm of CarbonFiber. The sensor modules mounted outside of the disks are double-sided and have 0.03cm of silicon mounted on either side of CarbonFiber/Rohacell31 frames that clip into PEEK (Polyetheretherketone) mounts. The average thickness of the CarbonFiber, Rohacell31 and PEEK in the modules of each disk double-layer is assumed to be the same as that for the barrel modules. The average thicknesses of the readout material are also assumed to be the same, but are repeated on both sides of the modules for double-sided readout.
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