Design and test of pixel sensors for the ATLAS pixel detector

The ATLAS experiment (The ATLAS Collaboration, ATLAS TDR 11, CERN/LHCC 98–13) which is currently under construction at the Large Hardorn Collider (LHC) at CERN (Geneva, Switzerland) will contain a pixel detector which provides three space points per track close to the interaction point of the colliding beams. Because of the harsh radiation environment of the LHC the technical realisation of the pixel detector is extremely challenging. All components of the hybrid pixel detector have to be radiation hard up to a particle fluence22All fluences are normalised to 1MeV neutrons (neq/cm2) [6]. 15 neq/cm2. This paper reports on the development of the sensor part of the system. A first prototype has been produced and successfully tested.