...
The inner detector is composer of three separate sub-systems: Pixel, SCT and TRT.
This image shows a cross-section view of the pixel detector only. One can see the three barrel layers, and the three disks
The SLAC ATLAS group has a number of areas of involvement in the pixel system. Our group has involvement in the core DSP software, AnalysisFramework infrastructure, online data access via web browser, alignment and validation, and timing. We provide links to pages summarizing this work below. The groups work related to the inner detector upgrade can be found elsewhere in these pages: https://confluence.slac.stanford.edu/display/Atlas/Upgrade