ATLAS Phase-2 Strip Tracker Upgrade

The LHC performed extremely well in operation. Large amounts of data have been collected at a center-of-mass energy of 7 TeV in 2011 and at 8 TeV in 2012.\nMeanwhile, a phased upgrade of the LHC is planned and in about ten years from now the high-luminosity LHC (HL-LHC) is foreseen. By luminosity levelling and a ten times higher LHC design luminosity the delivery of about 3000fb-1 is envisaged. To cope with the severe radiation dose and high particle rates, an upgrade of several detector components of the ATLAS experiment is required. The inner detector and TRT will be replaced by an all silicon tracking detector. The talk will focus on the Phase-2 upgrade of the ATLAS silicon strip detector. It will give an overview of the concept and highlight technology choices for the upgrade strip tracker. The developments towards low mass and modular double-sided structures for the barrel and forward region will be discussed. The current status of prototyping, assembly procedures and mechanical and electrical results of the prototyps, so called stavelets and petalets will be presented.