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The barrel cryostat is a cylinder of 1.5cm PolystyreneFoam with inner radius 11.2cm and z extent +/- 24.0cm.
The endplate cryostats are disks of 3.0cm PolystyreneFoam with inner radius 2.3cm, outer radius 11.2cm and inner z of 21.0cm.
The cryostat coatings and Faraday cage are represented by 0.02cm Aluminum placed at the inner surfaces of the cryostat.
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This section is still being updated to reflect changes in the tracker descriptions. Tracker:The tracker is composed of five cylindrical barrels with five |
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disk-shaped endplanes. The z extent of the barrels increases with radius |
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and the endplane for each extends beyond its cylinder in radius to provide overlap. The sensitive medium is silicon, |
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assembled into carbon-fiber/Rohacell/PEEK modules and read out via a bump-bonded chip and Kapton/Copper cables. These modules are supported by carbon-fiber/Rohacell/ |
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carbon-fiber barrels or disks. Each barrel cylinder is supported from the next barrel out by an annular carbon fiber-ring. Outside each of these support rings, G10/Copper printed circuit boards are mounted for power and readout distribution to all silicon modules in a layer. Barrels:The radii and z extent of the barrel silicon are:
For the barrels, the support tubes are composed of .025cm CarbonFiber, 1.3cm of Rohacell31 and 0.25cm CarbonFiber. |
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The sensor modules for the barrel are single-sided and have 0.03cm of silicon mounted on |
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z
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inner radius
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26.67
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18.635
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61.67
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44.885
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96.67
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71.135
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131.67
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97.385
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164.90
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CarbonFiber/Rohacell frames that clip into PEEK (Polyetheretherketone) mounts. The average thickness of the CarbonFiber, Rohacell and PEEK in the modules of each barrel layer are 0.016cm, 0.14cm and 0.02cm repectively. The average thicknesses of the readout materials are 0.00048cm of Silicon, 0.0064cm of Kapton and 0.00065cm of Copper, however, the thickness of the cable material varies by layer. Endcap:The forward disk supports are composed of .039cm CarbonFiber, 2.5cm Rohacell31 and 0.039cm of CarbonFiber.
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Calorimeters:
Electromagnetic Calorimeter:
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