Luminosity measurement at ATLAS - development, construction and test of   scintillating fibre prototype detectors
  We are reporting about a scintillating fibre tracker which is proposed for the precise determination of the absolute luminosity of the CERN LHC at interaction point 1 where the ATLAS experiment is located. The detector needs to track protons elastically scattered under micro-rad angles in direct vicinity to the LHC beam. It is based on square shaped scintillating plastic fibres read out by multi-anode photomultiplier tubes and is housed in Roman Pots. We describe the design and construction of prototype detectors and the results of a beam test experiment at DESY. The excellent detector performance established in this test validates the detector design and supports the feasibility of the proposed challenging method of luminosity measurement. 
S. Ask, P. Barillon, A. Braem, C. Cheiklali, I. Efthymiopoulos, D.   Fournier, C. de La Taille, B. Di Girolamo, P. Grafstroe...