Luminosity measurement at ATLAS - Development, construction and test of scintillating fibre prototype detectors
/ Authors
S. Ask, P. Barrillon, A. Braem, C. Cheiklali, I. Efthymiopoulos, D. Fournier, C. Taille, B. Girolamo, P. Grafström, C. Joram
and 14 more authors
M. Haguenauer, V. Hedberg, B. Lavigne, A. Maio, A. Mapelli, U. Mjörnmark, P. Puzo, M. Rijssenbeek, J. Santos, J. Saraiva, H. Stenzel, M. Thioye, E. Valladolid, V. Vorobel
/ Abstract
We are reporting about a scintillating fibre tracking detector 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 mu rad angles in direct vicinity to the LHC beam. It is based on square shaped scintillating plastic fibres read out by multianode 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. (c) 2006 Elsevier B.V. All rights reserved.
Journal: Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment