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The vertex detector is composed of a central barrel system with five layers and forward systems composed of four disks.

Barrels 

The barrels are all 12.5cm long and are composed are composed of .0113cm thick Silicon, of which the outer .002cm is sensitive.
The inner radii of the layers are:

1.46cm, 2.26cm, 3.54cm, 4.80cm, and 6.04cm

, with the following inner radii and |z| extants:

Sensors are mounted on 13.5cm long support cylinders made of 0.0065cm thick carbon fiber (25% coverage of 0.026cm thick CF).
The cylinders attach to 0.0065cm thick carbon fiber bulkheads that span 1.45cm<r<6.04cm located at |z|=6.75 cm.
The vertex detector supports are 0.0427cm thick carbon fiber cylinders that span 1.45cm<r<16.953cm located at |z|=6.78cm.

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Disks

There are four forward disks on either end, composed of a total of .0113cm of silicon, of which the inner .002cm is sensitive.
All of the disks extend to a maximum radius of 7.5cm.
The innner  The radial extant and inner |z| positions and inner radii for the four disks are:

The forward disks are supported by disk supports are 0.0065cm thick carbon fiber (25% coverage of 0.026cm thick CF) that are located 0.02cm behind the inner face of the sensors and extend from the inner disk radius to an outer radius of 16.953cm.disks located as follows:

Forward disk readout electronics and cables are modeled as having an inner and outer part.
The inner part consists of G10 rings of 0.1cm thickness in radius and 0.2mm thickness in z that are located radially just inside the sensors and begin 0.1cm in front of the inner sensor plane.
The outer part consists of G10 rings of 0.5cm thickness in radius and 0.2mm thickness that are located radially just outside the sensors and begin 0.2cm in front of the inner sensor plane.

Cables and services are in 3 parts.
The inner cables are 0.012cm thick and run conically from an inner radius of 1.32cm at |z|=6.9cm to 1.455cm at |z|=10.0cm.
Service material of thickness 0.3cm runs conically from an inner radius of 1.455cm at |z|=10cm to 1.542cm at |z|=12cm.
The outer cables are parallel to the conical beam pipe and flare from a thickness of 0.010cm at an inner radius of 1.542cm at |z|=12cm to a thickness of 0.004cm at |z|=167.9cm.

Support Tube 

The entire vertex detector is enclosed within a 200cm long double a double walled carbon fiber support tube.
The support tube walls have are 0.05cm thick carbon fiber with inner radii of 16.954cm and 18.434cm and are 0.0427cm thick.
87cm and 18.42cm and a |z| extant of |z|<89.48cm. The ends of the support tube double-walled disks of 0.0427cm 05cm thick carbon fiber disks that span 5.5cm<r<16.953cm 87cm and are located at |z|=97.5cm and |z|=99.74cm.

Tracker:

The tracker is composed of five cylindrical barrels with four disk-shaped endplanes. The z extent of the barrels increases with radius and the endplane for each extends beyond its cylinder in radius to provide overlap. The sensitive medium is silicon, 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/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 in z, 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 extents of the barrel silicon layers are:

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