Nuclear Instruments and Methods in Physics Research A 501 (2003) 87–92 The ATLAS pixel detector

The ATLAS experiment will use a pixel detector as the innermost part of its semiconductor tracker. The pixel detector consists of three cylindrical layers in the barrel part and three disks in the forward and backward parts. The detector is designed to operate with a 40 MHz bunch crossing frequency, a high particle flux density and an extreme radiation environment at LHC. The main characteristics of the project are illustrated together with recent experimental results