DŲ Tracking

calorimeter cryostat

1.1

1.7

1.3 m

50 cm

Solenoid
- 2 Tesla superconducting

Central Fiber Tracker (CFT)
- 16 doublet layers of Sci-Fi ribbon
  - 8 axial (parallel to the z-axis) ? TRIGGER
  - 8 stereo(2o pitch), not used in TRIGGER
- 76,800 830 ?m fibers (multiclad)
- coverage: 20<rឤcm, polar angle to ~22?
- In the radial plane, CFT is divided into 80
  sectors (4.5?)

Silicon Tracker

Preshowers
- Central
- Forward

z-axis

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