The ATLAS Insertable B-Layer (IBL) project

Preparing for the high luminosity LHC phase, the ATLAS experiment will upgrade its Pixel Detector with the installation of a new pixel layer. The new sub detector, called the Insertable B-Layer (IBL), will be installed during the LHC first shut down in 2013–2014, in between the innermost current pixel layer and the beampipe. e with the high radiation and pixel occupancy due to the proximity to the interaction point, a new readout chip FE-I4 and two different silicon sensor technologies, planar and 3D have been developed. Furthermore, the physics performance should be improved through the reduction of pixel size and a new mechanical support using lightweight staves. e-series staves were made in order to qualify the assembly procedure, the loaded module electrical integrity and the readout chain before going into production.