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TUPZ002 |
90 m β* Optics for ATLAS/ALFA |
1798 |
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- S. Cavalier, P.M. Puzo
LAL, Orsay, France
- H. Burkhardt
CERN, Geneva, Switzerland
- A. Peskov
NNGU, Nizhny Novgorod, Russia
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We describe a high β* optics developed for the ATLAS detector at the LHC interaction regions (IR1), Roman Pots have been installed 240 m left and right of IR1 to allow to measure the absolute luminosity and the total elastic cross section for ATLAS with ALFA (Absolute Luminosity for ATLAS). Ultimately, it is planned to preform these measurements at a very high β* of 2625 m. Here we describe a new, intermediate β* = 90 m optics, which has been optimized for compatibility with the present LHC running conditions. We described the main features and expected performance of this optics for ALFA.
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