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This page is still being updated to reflect changes in the tracker descriptions.

This is the version of the Silicon Detector modelled as of July 23, 2005, to be used for detector studies at Snowmass.
The compact description of this detector in xml format can be found at http://www.lcsim.org/detectors/sidaug05.zip . What follows is a plain text description of the file compact.xml found in this zip file.

The tracking region is defined to be a cylinder with radius 125.5cm and z extent +/- 167.9cm.

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This section is still being updated to reflect changes in the tracker descriptions. Beampipe: The beampipe is composed of three sections: a cylindrical central tube and forward and backward conical sections. The central tube has an inner radius of 1.2cm and a z extent of +/- 6.251cm and is made of .040cm thick Beryllium. The conical sections are 1mm thick Beryllium and flare from 1.2cm inner radius at 6.25cm to 6.97cm at the edge of the tracking region. The beam pipe has a titanium inner liner .0025cm thick. Vertex Detector: The vertex detector is composed of a central barrel system with five layers and forward systems composed of four disks. The barrels are all 12.5cm long and are composed of .01cm Silicon, of which the outer .002 is sensitive. The inner radii of the layers are: 1.4, 2.5, 3.6, 4.8, 6.0 There are four forward disks on either end, composed of a total of .03cm of silicon, of which the inner .002 is sensitive. All of the disks extend to a maximum radius of 7.5cm. The z positions and inner radii for the four disks are: z inner radius 7.6cm 1.6cm 9.5cm 1.6cm 12.5cm 2.0cm 18.0cm 2.0cm The vertex detector is supported by a Beryllium cage and surrounded by a foam cryostat. The barrel support is a cylinder 0f 0.1cm Beryllium with inner radius 7.0cm and z extent +/- 6.5cm. The endplate supports are disks of 0.5cm Beryllium with inner radius 1.5cm, outer radius 7.0cm and inner z of 6.5cm. The barrel cryostat is a cylinder 0f 1.5cm PolystyreneFoam with inner radius 11.2cm and z extent +/- 23.0cm. The endplate cryostats are disks of 3.0cm PolystyreneFoam with inner radius 2.3cm, outer radius 11.2cm and inner z of 20.0cm. Tracker: The tracker is composed of five barrels with five endplates. The z extent of the barrels increases with radius. The sensitive medium is silicon, supported with CarbonFiber/Rohacell/Carbonfiber barrels or disks. Barrels: For the barrels, the support tubes are composed of .025cm CarbonFiber, 1.3cm of Rohacell31 and 0.25cm CarbonFiber. The sensitive medium is .03cm of silicon mounted on the outer radius of the support cylinders. The inner radii and z extent of the cylindrical layers are: z inner radius 26.67 18.635 61.67 44.885 96.67 71.135 131.67 97.385 164.90 123.635 Endcap: The forward disk supports are composed of .039cm CarbonFiber, 2.5cm Rohacell31 and 0.039cm of CarbonFiber. The sensitive medium is 0.3cm of silicon and is consists of a back-to-back double layer for stereo readout. These are mounted on the inner side of the support disks. z inner radius outer radius 27.1 4.0 20.5 62.1 7.9 46.75 97.1 11.7 73.0 132.1 15.6 99.25 164.94 19.5 125.5

Calorimeters:

Electromagnetic Calorimeter:

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