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The barrels are composed of .0113cm thick Silicon, of which the outer .002cm is sensitive, with the following inner radii and |z| extents:
Layer | Inner Radius | |z| Extant Extent |
|---|---|---|
1 | 1.46cm | 6.25cm |
2 | 2.26cm | 6.25cm |
3 | 3.54cm | 6.25cm |
4 | 4.80cm | 6.25cm |
5 | 6.04cm | 6.25cm |
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The entire vertex detector is enclosed within a double walled carbon fiber support tube. The support tube walls are 0.05cm thick carbon fiber with inner radii of 16.87cm and 18.42cm and a |z| extant extent of |z|<89.48cm. The ends of the support tube double-walled disks of 0.05cm thick carbon fiber disks located as follows:
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