ATLAS Experiment Pixel Detector Upgrades

The ATLAS experiment pixel detector upgrade plans are focused on development of new technology, including the FE-I4 readout integrated circuit. The first upgrade project to make use of this new technology is an "Insertable B-Layer" (IBL) pixel detector to be installed on a replacement beam pipe in 2013. The IBL will fit inside and not alter the existing ATLAS pixel detector. However, the possibility is being studied to replace the pixel whole detector in 2018 with a lower mass, higher performance instrument based on the FE-I4 chip and new mechanical structures.