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    Welcome to the Liverpool ATLAS homepage.

    The ATLAS SCT end-cap production at Liverpool is the largest current user of the Liverpool Semiconductor Detector Centre. This facility underpins activities in the High Energy and Nuclear Physics Groups at the University of Liverpool and the Astrophysics Research Institute of the Liverpool John Moores University. The ATLAS project is concerned with the construction of a very large array of sensors for charged particle detection and accurate track measurement at the 14 TeV Large Hadron Collider (LHC) 27km superconducting accelerator which is presently under construction at CERN, Geneva.

    At the LHC, ATLAS will be the largest experiment, measuring 46m long by 22m high and designed (along with its sister experiment CMS) to identify the new fundamental particles produced at the unprecedented collision energies. These measurements are expected to give answers to many leading theoretical questions such as the origin of mass and the deep connections between all the different forces, matter and space-time.




    Cutaway view of the ATLAS Detector.



    Within ATLAS, the UKs largest contribution is to the 60m^2 silicon micro-strip based Semi-Conductor Tracker (SCT), composed of a 4 layer Barrel section and two 9 layer End-Cap sections. The tracker is composed of 4000 modules, each of 1536 channels with spatial resolution ~10m and is being built by an international collaboration of 30 institutes with 11 UK groups contributing.




    The ATLAS Semi-Conductor Tracker (SCT).



    The End-Cap which is being assembled at Liverpool with help particularly from colleagues based in the northern Universities and CLRC, represents roughly half the UKs deliverables to the tracker. The high spatial resolution of the silicon detectors will be required to identify and accurately measure the hundreds of charged particle tracks produced every 25ns by the ultra-high energy head-on collisions of protons at the LHC. From this information, evidence for the Higgs and/or Supersymmetric particles, etc, will be extracted from the Pbytes of data to be recorded by the experiment.

Created: September 2003
Created by: Scott Lindsay