Barrel Technology Inner radius Outer radius z extent
Vertex detector Silicon pixels 1.4 6.0 +/- 6.25
Tracker Silicon strips 21.7 122.1 +/- 152.2
ECAL Silicon pixels-W 126.5 140.9 +/- 176.5
HCAL RPC-steel 141.7 249.3 +/- 301.8
Solenoid 5 Tesla SC 259.1 339.2 +/- 298.3
Flux return Scintillator-steel 340.2 604.2 +/- 303.3

Endcap

Technology Inner z Outer z Outer radius
Vertex detector Silicon pixels 7.3 83.4 16.6
Tracker Silicon strips 77.0 164.3 125.5
ECAL Silicon pixel-W 165.7 180.0 125.0
HCAL RPC-steel 180.5 302.8 140.2
Flux return Scintillator/steel 303.3 567.3 604.2
LumiCal Silicon-W 155.7 170.0 20.0
BeamCal Semiconductor-W 277.5 300.7 13.5