Upgrade IDLayout Pixels will be 3-D detector for innermost layer (alternative diamond) and n-on-p detector for 3 other layers (alternative n-on-n) (likely to change)  Strips: 5 barrel layers: @ 38, 49, 60, 75, and 95 cm  3 inner layers: SHORT STRIP LAYERS (24 mm-long strips)  2 outer layers: LONG STRIP LAYERS (96 mm-long strips)  The 3 outer layers + the end-caps will replace the TRT  The design is expected to keep the occupancy below 1.6% at the innermost radius.
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