GLAS-PPE/2008-33

Upgrading the ATLAS Barrel tracker for the super-LHC

R.L. Bates(1) On behalf of the ATLAS ID Collaboration

(1) University of Glasgow, Kelvin Building, Glasgow G12 8QQ, Scotland.

It has been proposed to increase the luminosity of the Large Hadron Collider at CERN by an order of magnitude, with the upgraded machine dubbed Super-LHC. The ATLAS experiment will require a new tracker for this high luminosity operation due to radiation damage and event density. In order to cope with the order of magnitude increase in pile-up backgrounds at the higher luminosity, an all silicon tracker is being designed. The new strip detector will use significantly shorter strips than the current silicon tracker in order to minimize the occupancy. As the increased luminosity will mean a corresponding increase in radiation dose, a new generation of extremely radiation hard silicon detectors is required. An R & D programme is under way to develop silicon sensors with sufficient radiation hardness. New front-end electronics and readout systems are being designed to cope with the higher data rates. This paper discusses the challenges facing the sensors and the cooling and mechanical support. A possible tracker layout is also described.

10th International Workshop on Radiation Imaging Detectors
29 June - 3 July, 2008, Helsinki, Finland

Paper available in the following formats: