Here's what the detector looks like in a cut view perpendicular to the beam axis and from the side.
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The barrels are radially positioned at 5.97cm, 10.16cm and 14.91cm. The maximum length of the SVT is 44.1cm and it has an eta coverage of +-1.
Each wafer SDD is 280microns thick silicon with an area of 6x6cm. This makes the total average radiation length of the SVT around 4.5% including the Front End Electronics
The wafers are effectively split in two (continental divide) and are read out at both ends. There are a total of 480 anodes read out per wafer. The signal from each anode is sampled and stored with Switched Capacitor Array (SCA) with a depth of 128 capacitors. This effectively creates a detector with 256x240 pixels per wafer.
This whole operation is led by Rene Bellwied mail Rene or the group mail list if you have any questions